Recombinant Mouse Epidermal Growth Factor (rm EGF)

Transcription

1 Recombinant Mouse Epidermal Growth Factor (rm EGF) Synonyms: Urogastrone, URG. Introduction: Epidermal growth factor has a profound effect on the differentiation of specific cells in vivo and is a potent mitogenic factor for a variety of cultured cells of both ectodermal and mesodermal origin. The EGF precursor is believed to exist as a membrane-bound molecule which is proteolytically cleaved to generate the 53-amino acid peptide hormone that stimulates cells to divide. EGF stimulates the growth of various epidermal and epithelial tissues in vivo and in vitro and of some fibroblasts in cell culture. Description: Recombinant mouse Epidermal Growth Factor produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 53 amino acids including 3 intramolecular disulfide-bonds and having a molecular mass of 6 kda. The EGF is purified by proprietary chromatographic techniques. Formulation: The protein was lyophilized from a concentrated (1mg/ml) solution containing 1x PBS ph 7.4. Solubility: It is recommended to reconstitute the lyophilized rm EGF in sterile H 2 O not less than 100 µg/ml, Stability: Lyophilized rm EGF, although stable at room temperature for 3 weeks, should be stored desiccated below 18 C. Upon reconstitution rm EGF should be stored at 4 C between 2-7 days and for future use below 18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles. Purity: Greater than 97.0% as determined by: (a) Analysis by RP-HPLC. (b) Analysis by SDS-PAGE Amino acid Sequence: The sequence of the first five N-terminal amino acids was determined and was found to be Asn-Ser-Tyr-Pro-Gly, which agrees with the sequence of native Epidermal Growth Factor human. Biological Activity: The ED50, calculated by the dose-dependant proliferation of murine BALB/c 3T3 cells (measured by 3 H-thymidine uptake) is < 0.1 ng/ml. Protein content: Protein quantitation was carried out by two independent methods: 1. UV spectroscopy at 280 nm using the absorbency value of 3 as the extinction coefficient for a 0.1% (1mg/ml) solution. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics). 2. Analysis by RP-HPLC, using a calibrated solution of EGF as a Reference Standard. small 100 µg Cat.N medium 500 µg Cat.N

2 Recombinant Murine Eotaxin (rm CCL11) Synonyms: Small inducible cytokine A11, SCYA11, Eosinophil chemotactic protein, chemokine (C-C motif) ligand 11 Introduction: Eotaxin is a small cytokine belonging to the CC chemokine family. It selectively recruits eosinophils by inducing their chemotaxis and is therefore implicated in allergic responses. The effects of Eotaxin are mediated by its binding to a G-protein-linked receptor known as a chemokine receptor. Chemokine receptors for which Eotaxin is a ligand include CCR2, CCR3 and CCR5. The gene for human Eotaxin is encoded on three exons and is located on chromosome 17. Description: Recombinant murine Eotaxin produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 74 amino acids and having a molecular mass of Dalton. The rm Eotaxin is purified by proprietary chromatographic techniques. Formulation: The protein was lyophilized from 1 mg/ml solution in water containing no additives. Solubility: It is recommended to reconstitute the lyophilized rm Eotaxin in sterile H 2 O not less than 100 µg/ml, Stability: Lyophilized rm Eotaxin, although stable at room temperature for 3 weeks, should be stored desiccated below 18 C. Upon reconstitution rm Eotaxin should be stored at 4 C between 2-7 days and for future use below 18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles. Purity: Greater than 98.0% as determined by RP-HPLC and by reducing and non-reducing SDS-PAGE Silver stained gel. Amino acid Sequence: The sequence of the first five N-terminal amino acids was determined and was found to be His-Pro-Gly-Ser-Ile. Biological Activity: rm Eotaxin is fully biologically active when compared to standard. The activity is determined by its ability to induce chemotaxis purified eosinophils at a concentration of ng/ml. Endotoxin: Less than 0.1 ng/µg (IEU/µg) of rm Eotaxin. small 2 µg Cat.N medium 10 µg Cat.N large 50 µg Cat.N x-large 250 µg Cat.N

3 Recombinant Mouse Fibroblast Growth Factor-acidic (rm FGF-a / FGF-1) Synonyms: HBGF-1, ECGF-beta, FIBP, FGFIBP, FIBP-1, ECGF, ECGFA, GLIO703. Introduction: Acidic fibroblast growth factor is a member of the fibroblast growth factor (FGF) family. FGF family members possess broad mitogenic and cell survival activities, and are involved in a variety of biological processes, including embryonic development, cell growth, morphogenesis, tissue repair, tumor growth and invasion. This protein functions as a modifier of endothelial cell migration and proliferation, as well as an angiogenic factor. It acts as a mitogen for a variety of mesoderm- and neuroectoderm-derived cells in vitro, thus is thought to be involved in organogenesis. Three alternatively spliced variants encoding different isoforms have been described. The heparin-binding growth factors are angiogenic agents in vivo and are potent mitogens for a variety of cell types in vitro. There are differences in the tissue distribution and concentration of these 2 growth factors. Description: rm Fibroblast Growth Factor-acidic produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 141 amino acids and having a molecular mass of 15.9 kda. The FGF acidic is purified by proprietary chromatographic techniques. Formulation: Lyophilized from a 0.22 µm filtered solution in 5mM NaP + 50mM NaCl, ph-7.5. Solubility: It is recommended to reconstitute the lyophilized rm FGF-a in sterile H 2 O not less than 100 µg/ml, Stability: Lyophilized rm FGF-a, although stable at room temperature for 3 weeks, should be stored desiccated below 18 C. Upon reconstitution rm FGF-a should be stored at 4 C between 2-7 days and for future use below 18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles. Purity: Greater than 95.0% as determined by SDS-PAGE. Amino acid sequence: MFNLPLGNYK KPKLLYCSNG GHFLRILPDG TVDGTRDRSD QHIQLQLSAE SAGEVYIKGT ETGQYLAMDT EGLLYGSQTP NEECLFLERL EENHYNTYTS KKHAEKNWFV GLKKNGSCKR GPRTHYGQKA ILFLPLPVSS D. Biological Activity: The ED 50 as determined by the dose-dependent stimulation of thymidine uptake by 3T3 cells in the presence of heparin is 0.5 ng/ml corresponding to a specific activity of 2 x 10 6 units/mg. small 10 µg Cat.N medium 50 µg Cat.N large 250 µg Cat.N x-large 1000 µg Cat.N

4 Recombinant Mouse Fibroblast Growth Factor-basic (rm FGF-b / FGF-2) Synonyms: HBGH-2, HBGF-2, Prostatropin. Introduction: FGF-basic is a member of the fibroblast growth factor (FGF) family. FGF family members bind heparin and possess broad mitogenic and angiogenic activities. FGF-b has been implicated in diverse biological processes, such as limb and nervous system development, wound healing and tumor growth. The mrna for this gene contains multiple polyadenylation sites and is alternatively translated from AUG and non-aug (CUG) initiation codons resulting in five different isoforms with distinct properties. The CUG-initiated isoforms are localized in the nucleus and are responsible for the intracrine effect, whereas the AUG-initiated form is mostly cytosolic and is responsible for the paracrine and autocrine effects of FGF-b. The heparin-binding growth factors are angiogenic agents in vivo and are potent mitogens for a variety of cell types in vitro. there are differences in the tissue distribution and concentration of these 2 growth factors. Description: Recombinant mouse FGF-basic (FGF-2) produced in E.Coli is a single, non-glycosylated polypeptide chain containing 145 amino acids and having a molecular mass of Dalton. The rm FGF-basic is purified by proprietary chromatographic techniques. Physical Appearance: Sterile filtered white lyophilized (freeze-dried) powder. Formulation: Lyophilized from a 0.22 µm filtered solution in 25 mm sodium acetate, 200 mm NaCl, ph 7.5 Solubility: It is recommended to reconstitute the lyophilized FGF-basic in sterile H 2 O not less than 100 µg/ml, Stability: Lyophilized rm FGF-basic although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution rm FGF-basic should be stored at 4 C between 2-7 days and for future use below -18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles. Purity: Greater than 95.0% as determined by SDS-PAGE. Endotoxicity: The endotoxin level is less than 1 EU / µg determined by LAL method Amino acid Sequence: The sequence of the first five N-terminal amino acids was determined and was found to be Pro-Ala-Leu-Pro-Glu. Biological Activity: The ED 50, calculated by the dose-dependant proliferation of BALB/3T3 cells is < 0.5 ng/ml. small 10 µg Cat.N medium 50 µg Cat.N large 250 µg Cat.N x-large 1000 µg Cat.N

5 Recombinant Mouse Flt3-Ligand (rm Flt3 / CD135) Synonyms: Fms-related tyrosine kinase 3 ligand, Stem Cell Tyrosine Kinase 1(STK1). Introduction: Flt3-Ligand is a growth factor that regulates proliferation of early hematopoietic cells. Flt3-Ligand binds to cells expressing the tyrosine kinase receptor Flt3. Flt3-Ligand, by itself does not stimulate proliferation of early hematopoietic cells, but synergizes with other CSFs and interleukins to induce growth and differentiation. Unlike SCF, Flt3-Ligand has no activity on mast cells. Multiple isoforms of Flt3-Ligand have been identified. Description: Recombinant mouse Flt3-Ligand produced in E.Coli is a non-glycosylated, polypeptide chain containing 163 amino acids and having a molecular mass of 18.6 kda. The rm Flt3-Ligand is purified by proprietary chromatographic techniques. Formulation: The protein was lyophilisated from a 0.22 µm filtered solution in PBS. Solubility: It is recommended to reconstitute the lyophilized rm Flt3-Ligand in sterile H 2 0 not less than 100 µg/ml, Stability: Lyophilized rm Flt3-Ligand although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution rm Flt3-Ligand should be stored at 4 C between 2-7 days and for future use below -18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles. Purity: Greater than 95.0% as determined by SDS-PAGE. Endotoxin: The endotoxin level is less than 1 EU / µg determined by LAL method Amino acid Sequence: The sequence of the first five N-terminal amino acids was determined and was found to be Met-Thr-Pro-Asp-Cys. Biological Activity: Determined by the dose-dependent stimulation of the proliferation of receptor-transfected cells. small 2 µg Cat.N medium 10 µg Cat.N large 50 µg Cat.N x-large 250 µg Cat.N xx-large 1000 µg Cat.N

6 Recombinant Murine Granulocyte Colony Stimulating Factor (rm G-CSF) Synonyms: CSF3, MGI-1G, GM-CSF beta, Pluripoietin Introduction: G-CSF is a growth factor produced by the endothelium, macrophages and a number of other immune cells. G-CSF stimulates the bone marrow to produce granulocytes and also to stimulate the survival, proliferation, differentiation and function of neutrophil granulocyte progenator cells and mature neutrophils. Description: Recombinant mouse G-CSF produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 179 amino acids and having a molecular mass of 19kDa. rm G-CSF is purified by proprietary chromatographic techniques. Formulation: Lyophilized from a 0.22 µm filtered carrier free solution in 25 mm sodium phosphate ph mm NaCl. Solubility: It is recommended to reconstitute the lyophilized rm G-CSF in sterile H 2 O not less than 100 µg/ml, Stability: Lyophilized rm G-CSF although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution rm G-CSF should be stored at 4 C between 2-7 days and for future use below -18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles. Purity: Greater than 95.0% as determined by SDS-PAGE. Endotoxicity: The endotoxin level is less than 0.1 ng per µg (1EU/µg) determined by LAL method Amino Acid Sequence: MVPLVTVSAL PPSLPLPRSF LLKSLEQVRK IQASGSVLLE QLCATYKLCH PEELVLLGHS LGIPKASLSG CSSQALQQTQ CLSQLHSGLC LYQGLLQALS GISPALAPTL DLLQLDVANF ATTIWQQMEN LGVAPTVQPT QSAMPAFTSA FQRRAGGVLA ISYLQGFLET ARLALHHLA Biological Activity: The ED 50 range < 0.05 ng/ml determined by the dose- dependant proliferation of mouse NFS-60 indicator cells, corresponding to specific activity of 2x10 7 IU/mg small 2 µg Cat.N medium 10 µg Cat.N large 50 µg Cat.N x-large 250 µg Cat.N xx-large 1000 µg Cat.N

7 Recombinant Murine Granulocyte Macrophage Colony Stimulating Factor (rm GM-CSF) Synonyms: CSF-2, MGI-1GM, Pluripoietin-alpha, Molgramostin, Sargramostin Introduction: GM-CSF is a cytokine that controls the production, differentiation and function of granulocytes and macrophages. The active form of the protein is found extracellularly as a homodimer. GM-CSF has been localized to a cluster of related genes at chromosome region 5q31 which is known to be associated with interstitial deletions in the 5q- syndrome and acute myelogenous leukemia. Other genes in the cluster include those encoding Interleukins 4, 5 and 13. GM-CSF stimulates the growth and differentation of hematopoietic precursor cells from various lineages, including granulocytes, macrophages, eosinophils and erythrocytes. Description: Recombinant murine GM-CSF produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 125 amino acids and having a molecular mass of Dalton. rm GM-CSF is purified by proprietary chromatographic techniques. Formulation: Lyophilized from a 0.22 µm filtered carrier free solution in PBS. Solubility: It is recommended to reconstitute the lyophilized rm GM-CSF in sterile H 2 O not less than 100 µg/ml, Stability: Lyophilized rm GM-CSF although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution rm GM-CSF should be stored at 4 C between 2-7 days and for future use below -18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles. Purity: Greater than 95.0% as determined by: SDS-PAGE. Endotoxicity: The endotoxin level is less than 0.1 ng per µg (1EU/µg) determined by LAL method Amino Acid Sequence: MAPTRSPITV TRPWKHVEAI KEALNLLDDM PVTLNEEVEV VSNEFSFKKL TCVQTRLKIF EQGLRGNFTK LKGALNMTAS YYQTYCPPTP ETDCETQVTT YADFIDSLKT FLTDIPFECK KPVQK Biological Activity: The ED 50 as determined by the dose-dependant stimulation of the proliferation of murine FDCP-1 cell line is < 0.2 ng/ml, corresponding to a specific activity of 5 x 10 6 IU/mg. small 2 µg Cat.N medium 10 µg Cat.N large 50 µg Cat.N x-large 250 µg Cat.N xx-large 1000 µg Cat.N

8 Recombinant Murine Growth factor alpha (CXCL1 / rm GRO-α / KC) Synonyms: Keratinocyte-derived Chemokine, Secretary protein N51, SCYB1, GRO-1 Introduction: The three isoforms of GRO GROalpha, GRObeta and GROgamma - are structurly related to Interleukin-8 and belong to the CXC chemokines that can signal through the CXCR1 or CXCR2 receptors. The GRO proteins chemoattract and activate neutrophils and basophils. GROa / KC is expressed by macrophages, neutrophils and epithelial cells and has neutrophil chemoattractant activity. Murine GROa /KC also binds to human neutrophils. An initial study in mice showed evidence that GROa decreased the severity of multiple sclerosis and may offer a neuro-protective function. Description: Recombinant murine GROa/KC produced in E. coli is a single, non-glycosylated, polypeptide chain containing 77 amino acids and having a molecular mass of 7.8 kda. Rm GRO-α is purified by proprietary chromatographic techniques. Source: E. coli. Physical Appearance: Sterile Filtered Whit lyophilized (freeze-dried) powder. Formulation: Lyophilized from a 0.22 µm filtered solution in 50 mm sodium acetate, 50 mm NaCl, ph 7.5 Solubility: It is recommended to reconstitute the lyophilized rm GROa/KC in sterile water not less than 100 µg/ml, Stability: Lyophilized rm GROa/KC although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution rm GROa/KC should be stored at 4 C between 2-7 days and for future use below -18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles. Purity: Greater than 95.0% as determined by SDS-PAGE. Endotoxicity: The endotoxin level is less than 1 EU / µg determined by LAL method. Amino acid Sequence: APIANELRCQ CLQTMAGIHL KNIQSLKVLP SGPHCTQTEV IATLKNGREA CLDPEAPLVQ KIVQKMLKGV PK Biological Activity: testing in progress small 5 µg Cat.N medium 20 µg Cat.N

9 Recombinant murine Growth factor beta (rm GRO-β / rm CXCL2 / rm MIP-2a) Synonyms: GRO2, SCYB2, CINC-2a, MGSA beta, Macrophage Inflammatory Protein-2 alpha. Introduction: Growth factor beta is a small cytokine belonging to the CXC chemokine family. GRO-β is 90% identical in amino acid sequence as a related chemokine, GRO-α. This chemokine is secreted by monocytes and macrophages and is chemotactic for polymorphonuclear leukocytes and hematopoietic stem cells. The gene for GRO-β is located on human chromosome 4 in a cluster of other CXC chemokines. GRO-β mobilizes cells by interacting with a cell surface chemokine receptor called CXCR2. Description: Recombinant murine GRO-β produced in E.Coli is a single,non-glycosylated, polypeptide chain containing 73 amino acids and having a molecular mass of 7849 Dalton. Rm GRO-β is purified by proprietary chromatographic techniques. Source: E. coli. Physical Appearance: Sterile Filtered Whit lyophilized (freeze-dried) powder. Formulation: lyophilized from a concentrated solution in 20mM PB, ph7.4 and 150mM NaCl. Solubility: It is recommended to reconstitute the lyophilized rm GRO-β in sterile H2O not less than 100 µg/ml, Stability: Lyophilized rm GRO-β although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution rm GRO-β should be stored at 4 C between 2-7 days and for future use below -18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles. Purity: Greater than 97.0% as determined by RP-HPLCand by SDS-PAGE. Amino acid Sequence: The sequence of the first five N-terminal amino acids was determined and was found to be Ala-Val-Val-Ala-Ser. Biological Activity: The biological activity was determined by ability to chemoattract total human neutrophils using a concentration range of ng/ml. Protein content: Protein quantitation was carried out by two independent methods: 1. UV spectroscopy at 280 nm using the absorbency value of 0,015 as the extinction coefficient for a 0.1% (1 mg/ml) solution. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics). 2. Analysis by RP-HPLC, using a calibrated solution of rm Gro- β as a Reference Standard.. small 5 µg Cat.N medium 20 µg Cat.N

10 Recombinant Murine Interferon Gamma (rm IFN-gamma) Synonyms: Immune Interferon, Type II Interferon, T cell Interferon, MAF, IFNG, IFG, IFI. Introduction: IFN-gamma produced by lymphocytes activated by specific antigens or mitogens. IFN-gamma, in addition to having antiviral activity, has important immunoregulatory functions, it is a potent activator of macrophages and has antiproliferative effects on transformed cells and it can potentiate the antiviral and antitumor effects of the type I interferons. Description: Recombinant murine IFN-gamma produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 134 amino acids and having a molecular mass of Dalton. The rm IFN-gamma is purified by proprietary chromatographic techniques. Physical Appearance: Sterile filtered white lyophilized (freeze-dried) powder. Formulation: The protein was lyophilized from a 0.2µm filtred concentrated (1mg/ml) solution in PBS, ph 7.4 Solubility: It is recommended to reconstitute the lyophilized rm IFN-gamma in sterile H 2 O not less than 100 µg/ml, Stability: Lyophilized rm IFN-gamma although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution rm IFN-gamma should be stored at 4 C between 2-7 days and for future use below -18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles. Purity: Greater than 95.0% as determined by: (a) Analysis by RP-HPLC. (b) Analysis by SDS-PAGE Amino Acid Sequence: The sequence of the first five N-terminal amino acids was determined and was found to be Met-His-Gly-Thr-Val. Biological Activity: rm IFN-gamma is fully biologically active when compared to standard. The specific activity as determined by the cytopathic affect inhibition assay with murine NIH 3T3 cells challenged with EMC virus was < 0.1 ng/ml, corresponding to a specific activity of 1.0 x 10 7 IU/mg.. small 20 µg Cat.N medium 100 µg Cat.N large 500 µg Cat.N x-large 1000 µg Cat.N

11 Recombinant Murine Insulin-Like Growth Factor I (rm IGF-I) Synonyms: Somatomedin C, IGFIA, IGF 1 Introduction: The somatomedins, or insulin-like growth factors (IGFs), comprise a family of peptides that play important roles in mammalian growth and development. IGF 1 mediates many of the growth-promoting effects of growth hormone ( GH; MIM ). Early studies showed that growth hormone did not directly stimulate the incorporation of sulfate into cartilage, but rather acted through a serum factor, termed sulfaction factor, which later became known as somatomedin (Daughaday et al., 1972). Three main somatomedins have been characerized: somatomedin C (IGF1), somatomedin A (IGF2; MIM ) and somatomedin B ( MIM ) ( Rotwein, 1986; Rosenfeld, 2003). Description: Recombinant murine IGF-I produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 70 amino acids and having a molecular mass of 7600 Dalton. rm IGF-I is purified by proprietary chromatographic techniques. Formulation: rm IGF-I was lyophilized with no additives. Solubility: It is recommended to reconstitute the lyophilized rm IGF-I in sterile H 2 O not less than 100 µg/ml, Stability: Lyophilized rm IGF-I, although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution rm IGF-I should be stored at 4 C between 2-7 days and for future use below -18 C. For long term storage it is recommendet to add a carrier protein (0,1 % HSA or BSA). Please avoid freeze-thaw cycles. Purity: Greater than 98.0% as determined by RP-HPLC and by SDS-PAGE. Amino Acid Sequence: The sequence of the first five N-terminal amino acids was determined and was found to be Gly-Pro-Glu-Thr-Leu. Biological Activity: The rm IGF-I is fully biologically active when compared to standards. The ED 50, calculated by the dose-dependant proliferation of murine BALB\C 3T3 cells (measured by 3H-thymidine uptake) is less than 1.0 ng/ml, corresponding to a specific activity of 1x10 6 U/mg.. small 10 µg Cat.N medium 50 µg Cat.N large 250 µg Cat.N

12 Recombinant Murine Interleukin-1alpha (rm IL-1a / rm IL1F1) Synonyms: Hematopoietin-1, Lymphocyte-activating factor (LAF), Endogenous Pyrogen (EP), Leukocyte Endogenous Mediator (LEM), Mononuclear Cell Factor (MCF). Introduction: Interleukin-1 alpha is a proinflammatory cytokine produced by a wide variety of cell types, including macrophages, osteoblasts, monocytes and hepatocytes. Circulating levels of are normally low and only rise after stimulation by agents such as those produced by inflammation, infection or microbial endotoxins. IL-1 alpha possesses a wide variety of biological activities and exerts its effects by binding to specific cell surface receptors. Description: Recombinant murine Interleukin-1alpha produced in E.Coli is a non-glycosylated, polypeptide chain containing 156 amino acids and having a molecular mass of 18 kda. The IL-1a is purified by proprietary chromatographic techniques. Formulation: lyophilized from a 0.22 µm filtered solution in PBS, ph 7.2. Solubility: It is recommended to reconstitute the lyophilized rm IL-1a in sterile H 2 O not less than 100 µg/ml, Stability: Lyophilized rm IL-1a, although stable at room temperature for 3 weeks, should be stored desiccated below 18 C. Upon reconstitution rm IL-1a should be stored at 4 C between 2-7 days and for future use below 18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles. Purity: 95.0% as determined by SDS-PAGE. Endotoxicity: The endotoxin level is less than 1 EU / µg determined by LAL method Amino acid sequence: SAPYTYQSDL RYKLMKLVR QKFVMNDSLN QTIYQDVDKH YLSTTWLNDL QQEVKFDMYA YSSGGDDSKY PVTLKISDSQ LFVSAQGEDQ PVLLKELPET PKLITGSETD LIFFWKSINS KNYFTSAAYP ELFIATKEQS RVHLARGLPS MTDFQIS Biological Activity: The ED 50 as determined by its ability to promote proliferation of murine D10.G4.1 cells is < 0.01 ng/ml, corresponding to a specific activity of 1 x 10 8 IU/mg.. small 2 µg Cat.N medium 10 µg Cat.N large 50 µg Cat.N x-large 250 µg Cat.N xx-large 1000 µg Cat.N

13 Recombinant Murine Interleukin-1beta (rm IL-1b / rm IL1F2) Synonyms: Catabolin, Lymphocyte-activating factor (LAF), Endogenous Pyrogen (EP), Leukocyte Endogenous Mediator (LEM), Mononuclear Cell Factor (MCF). Introduction: IL-1B proteins are involved in the inflammatory response, being identified as endogenous pyrogens and are reported to stimulate the release of prostaglandin and collagenase from synovial cells. Interleukin-1b stimulates thymocyte proliferation by inducing IL-2 release, b-cell maturation and proliferation, and fibroblast growth factor activity. Description: Rm Interleukin-1b produced in E.Coli is a non-glycosylated, polypeptide chain containing 153 amino acids and having a molecular mass of 17.5 kda. The IL-1b is purified by proprietary chromatographic techniques. Physical Appearance: Sterile filtered white lyophilized (freeze-dried) powder. Formulation: lyophilized from a 0.22 µm filtered solution in PBS, ph 7.2. Solubility: It is recommended to reconstitute the lyophilized rm IL-1b in sterile H 2 O not less than 100 µg/ml, Stability: Lyophilized rm IL-1b, although stable at room temperature for 3 weeks, should be stored desiccated below 18 C. Upon reconstitution rm IL-1b should be stored at 4 C between 2-7 days and for future use below 18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles. Purity: 95.0% as determined by SDS-PAGE. Endotoxicity: The endotoxin level is less than 1 EU / µg determined by LAL method Amino acid sequence: MVPIRQLHYR LRDEQQKSLV LSDPYELKAL HLNGQNINQQ VIFSMSFVQG EPSNDKIPVA LGLKGKNLYL SCVMKDGTPT LQLESVDPKQ YPKKKMEKRF VFNKIEVKSK VEFESAEFPN WYISTSQAEH KPVFLGNNSG QDIIDFTMES VSS Biological Activity: The ED 50 as determined by the dose-dependant stimulation of murine D10 cells is < 2 pg/ml, corresponding to a specific activity of 5 x10 8 IU/mg. small 2 µg Cat.N medium 10 µg Cat.N large 50 µg Cat.N x-large 250 µg Cat.N xx-large 1000 µg Cat.N

14 Recombinant Murine Interleukin-2 (rm IL-2) Synonyms: T-cell growth factor (TCGF), Aldesleukin, Lymphokine Introduction: IL-2 is a secreted cytokine that is important for the proliferation of T and B lymphocytes. The receptor of this cytokine is a heterotrimeric protein complex whose gamma chain is also shared by Interleukin 4 (IL-4) and Interleukin 7 (IL-7). The expression of this gene in mature thymocytes is monoallellic, which represents an unusual regulatory mode for controlling the precise expression of a single gene. The targeted disruption of a similar gene in mice leads to ulcerative colitis- like disease which suggests an essential role of this gene in the immune response to antigenic stimuli. Description: Recombinant murine IL-2 produced in E.coli is a single, non-glycosylated polypeptide chain containing 149 amino acids and having a molecular mass of 17.2 kda. The rm IL-2 is purified by proprietary chromatographic techniques. Source: Escherichia coli. Physical Appearance: Sterile filtered white lyophilized (freeze-dried) powder. Formulation: Lyophilised from a 0.22 µm filtered solution in PBS ph 7.3. Solubility: After spinning down it is recommended to reconstitute the lyophilized rm IL-2 in sterile H 2 O not less than 100 µg/ml. Stability: Lyophilized rm IL-2 although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution rm IL-2 should be stored at 4 C between 2-7 days and for future use below - 18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles. Purity: Greater than 95.0% as determined by SDS-PAGE. Endotoxicity: The endotoxin level is less than 1 EU / µg determined by LAL method. Amino Acid Sequence: PTSSSTSSST AEAQQQQQQQ QQQQQHLEQL LMDLQELLSR MENYRNLKLP RMLTFKFYLP KQATELKDLQ CLEDELGPLR HVLDLTQSKS FQLEDAENFI SNIRVTVVKL KGSDNTFECQ FDDESATVVD FLRRWIAFCQ SIISTSPQ Biological Activity: Determined by the dose-dependant stimulation of murine CTLL-2 cells the biological activity is 5x 10 6 IU/mg. small 5 µg Cat.N medium 20 µg Cat.N large 100 µg Cat.N x-large 500 µg Cat.N xx-large 1000 µg Cat.N

15 Recombinant Murine Interleukin-3 (rm IL-3) Synonyms: MCGF (Mast cell growth factor), Multi-CSF, HCGF, P-cell stimulation factor Introduction: Interleukin-3 is a pleiotropic cytokine produced primarily by activated T cells. IL-3 is thought to function via specific cell surface receptors to stimulate the proliferation, differentiation and survival of haematopoietic cell lines. IL-3 has also been shown to affect the functional activity of a variety of other cell types including mast cells, eosinophils, megakaryocytes and basophils. Description: Recombinant murine IL-3 produced in E.Coli is a single, non-glycosylated polypeptide chain containing 135 amino acids and having a molecular mass of 15.1 kda. The rm IL-3 is purified by proprietary chromatographic techniques. Formulation: Lyophilized from a 0.22 µm filtered carrier free solution in PBS, ph 7.5 Solubility: It is recommended to reconstitute the lyophilized rm IL-3 in sterile H 2 O not less than 100 µg/ml, Stability: Lyophilized rm IL-3 although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution rm IL-3 should be stored at 4 C between 2-7 days and for future use below -18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles. Purity: Greater than 95.0% as determined by SDS-PAGE. Amino acid sequence: The sequence of the first five N-terminal amino acids was determined and was found to be Met-Asp-Thr-His-Arg. Biological Activity: The ED 50 as determined by the dose-dependant stimulation of murine M-NFS-60 cells is < 0.05 ng/ml, corresponding to a specific activity of 2 x 10 7 IU/mg. Endotoxin: Less than 0.1 ng/µg (IEU/µg) of rm IL-3. small 2 µg Cat.N medium 10 µg Cat.N large 50 µg Cat.N x-large 250 µg Cat.N xx-large 1000 µg Cat.N

16 Recombinant Murine Interleukin-4 (rm IL-4) Synonyms: BCGF, BCDF, B cell stimulating factor, BSF-1, Lymphocyte stimulatory factor, Binetrakin, Pitrakinra. Introduction: Interleukin-4 is a pleiotropic cytokine produced primarily by activated T lymphocytes, basophils and mast cells. Multiple immune response-modulating functions are performed by IL-4 on a variety of cell types and it has an important role in the regulator of isotype switching, induction of IgE production in B lymphocytes and differentiation of precursor T helper cells. IL-4 binds to both membrane-bound and secreted soluble IL-4 receptors. Description: Recombinant murine IL-4 produced in E.Coli is a single, non-glycosylated polypeptide chain containing 121 amino acids and having a molecular mass of 13.5 kda. The rm IL-4 is purified by proprietary chromatographic techniques. Formulation: Lyophilized from a 0.22 µm filtered solution in 25 mm Sodiumphosphate, 200 mm NaCl ph 6.5. Solubility: It is recommended to reconstitute the lyophilized rm IL-4 in sterile H 2 O not less than 100 µg/ml, Stability: Lyophilized rm IL-4 although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution rm IL-4 should be stored at 4 C between 2-7 days and for future use below -18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please avoid freeze-thaw cycles. Purity: 95.0% as determined by SDS-PAGE Endotoxin: The endotoxin level is less than 1 EU / µg determined by LAL method Amino acid sequence: MHIHGCDKNH LREIIGILNE VTGEGTPCTE MDVPNVLTAT KNTTESELVC RASKVLRIFY LKHGKTPCLK KNSSVLMELQ RLFRAFRCLD SSISCTMNES KSTSLKDFLE SLKSIMQMDY S Biological Activity: The ED 50 as determined by STAT6 specific reporter gene read-out on murine Ba/F3 cells is 2.5 ng/ml. small 2 µg Cat.N medium 10 µg Cat.N large 50 µg Cat.N x- large 250 µg Cat.N xx- large 1000 µg Cat.N

17 Recombinant Murine Interleukin-5 (rm IL-5) Synonymes: T-cell replacing factor (TRF), Eosinophil differentiation factor (EDF), B cell differentiation factor II (BCDFII). Introduction: The protein encoded by this gene is a cytokine that acts as a growth and differentiation factor for both B cells and eosinophils. This cytokine is a main regulator of eosinopoiesis, eosinophil maturation and activation. The elevated production of this cytokine is reported to be related to asthma or hypereosinophilic syndromes. The receptor of this cytokine is a heterodimer, whose beta subunit is shared with the receptors for IL-3 and GM-CSF. This gene, together with those for IL-4, IL-13 and GM-CSF, form a cytokine gene cluster on chromosome 5. This cytokine, IL-4, and IL13 are found to be regulated coordinately by long-range regulatory elements spread over 120 kilobases on chromosome 5q31. Description: Recombinant murine IL-5 produced in E.Coli is a dimeric, non-glycosylated polypeptide chain containing 2 x 113 amino acids forming a disulfide linked homodimer and having a molecular mass of 26.2 kda. The rm IL-5 is purified by proprietary chromatographic techniques. Physical Appearance: Sterile filtered white lyophilized (freeze-dried) powder. Formulation: Lyophilized from a concentrated (1mg/ml) solution containing 20mM Sodium Phosphate and 50mM NaCl, ph-7.5. Solubility: It is recommended to reconstitute the lyophilized rm IL-5 in steril H 2 O not less than 100µg/ml which can then be further diluted to other aqueous solutions. Stability: Lyophilized rm IL-5 although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution rm IL-5 should be stored at 4 C between 2-7 days and for future use below -18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles. Purity: Greater than 97.0% as determined by: (a) Analysis by RP-HPLC. (b) Analysis by SDS-PAGE. Amino Acid Sequence: MEIPMSTVVK ETLTQLSAHR ALLTSNETMR LPVPTHKNHQ LCIGEIFQGL DILKNQTVRG GTVEMLFQNL SLIKKYIDRQ KEKCGEERRR TRQFLDYLQE FLGVMSTEWA MEG. Biological Activity: The ED50 as determined by the dose-dependant stimulation of the proliferation of TF-1 cells was found to be 1.7ng/ml. small 2 µg Cat.N medium 10 µg Cat.N

18 Recombinant Murine Interleukin-6 (rm IL-6) Synonymes: IFN-b2, B cell differentiation factor (BCDF), BSF-2, HPGF, HSF, MGI-2, Interleukin HP-1, B-cell hybridoma growth factor. Introduction: IL-6 is a potent pro-inflammatory cytokine primarily produced by activated T-cells and an assortment of other cells including endothelial cells and macrophages. IL-6 affects B- and T-lymphocytes and has been shown to have a role in host defense, acute phase reactions, immune responses and hematopoiesis. Description: Recombinant murine IL-6 produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 187 amino acids and having a molecular mass of 21.7 kda. The rm IL-6 is purified by proprietary chromatographic techniques. Physical Appearance: Sterile filtered white lyophilized (freeze-dried) powder. Formulation: Lyophilized from a 0.22 µm filtered carrier free solution in PBS ph 7.5 containing 0.25 M NaCl Solubility: It is recommended to reconstitute the lyophilized rm IL-6 in steril H 2 O not less than 100µg/ml which can then be further diluted to other aqueous solutions. Stability: Lyophilized rm IL-6 although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution rm IL-6 should be stored at 4 C between 2-7 days and for future use below -18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles. Purity: Greater than 95.0% as determined by SDS-PAGE. Amino Acid Sequence: MFPTSQVRRG DFTEDTTPNR PVYTTSQVGG LITHVLWEIV EMRKELCNGN SDCMNNDDAL AENNLKLPEI QRNDGCYQTG YNQEICLLKI SSGLLEYHSY LEYMKNNLKD NKKDKARVLQ RDTETLIHIF NQEVKDLHKI VLPTPISNAL LTDKLESQKE WLRTKTIQFI LKSLEEFLKV TLRSTRQT Endotoxicity: The endotoxin level is less than 0.1 ng per µg (1EU/µg) determined by LAL method Biological Activity: The ED 50 as determined by its growth promoting effect on 7TD1 cells is < 0.02 ng/ml, corresponding to a specific activity of 5.0 x 10 7 IU/mg. small 2 µg Cat.N medium 10 µg Cat.N large 50 µg Cat.N x-large 250 µg Cat.N xx-large 1000 µg Cat.N

19 Recombinant Murine Interleukin-7 (rm IL-7) Synonyms: Lymphopoietin 1 (LP-1), pre-b cell factor. Introduction: Interleukin-7 is a potent lymphoid cell growth factor produced primarily by stromal cells. IL-7 has been shown to support the proliferation and differentiation of pre B- and early T cells as well as displaying a biological effect on cells of NK and myeloid lineages. Description: Recombinant murine IL-7 produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 130 amino acids and having a molecular mass of 14.9 kda. The rm IL-7 is purified by proprietary chromatographic techniques. Physical Appearance: Sterile filtered white lyophilized (freeze-dried) powder. Formulation: lyophilized from a 0.22 µm filtered solution in 25 mm Sodiumphosphate, 200 mm NaCl, ph 7.5 Solubility: It is recommended to reconstitute the lyophilized rm IL-7 in sterile H 2 O not less than 100 µg/ml, Stability: Lyophilized rmil-7 although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution rm IL-7 should be stored at 4 C between 2-7 days and for future use below - 18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles. Purity: Greater than 95.0% as determined by SDS-PAGE / silver stain. Endotoxicity: The endotoxin level is less than 1 EU/µg determined by LAL method Amino Acid Sequence: MECHIKDKEG KAYESVLMIS IDELDKMTGT DSNCPNNEPN FFRKHVCDDT KEAAFLNRAA RKLKQFLKMN ISEEFNVHLL TVSQGTQTLV NCTSKEEKNV KEQKKNDACF LKRLLREIKT CWNKILKGSI Biological Activity: The ED 50 as determined by IL-7 induced STAT activation in murine AG14 cells is < 0.2 ng/ml, corresponding to a specific activity of 2 x 10 6 IU/mg. small 2 µg Cat.N medium 10 µg Cat.N large 50 µg Cat.N x-large 250 µg Cat.N xx-large 1000 µg Cat.N

20 Recombinant Murine Interleukin-9 (rm IL-9) Synonyms: P40, HP40, T-cell growth factor p40, P40 cytokine. Introduction: rh IL-9 is thought to be a regulator of hematopoiesis. It has been shown to enhance the growth of human mast cells and megakaryoblastic leukemic cells as well as murine Helper T-cell clones. IL-9 is a glycoprotein with a molecular weight of that is derived from T-cells and maps to human chromosome 5. Description: Recombinant murine IL-9 produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 127 amino acids and having a molecular mass of Dalton. The rm IL-9 is purified by proprietary chromatographic techniques. Physical Appearance: Sterile filtered white lyophilized (freeze-dried) powder. Formulation: The protein was lyophilized from a concentrated (1mg/ml) solution containing no additives. Solubility: It is recommended to reconstitute the lyophilized rm IL-9 in sterile H 2 O not less than 100 µg/ml, Stability: Lyophilized rmil-9 although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution rm IL-9 should be stored at 4 C between 2-7 days and for future use below - 18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles. Purity: Greater than 98.0% as determined by: (a) Analysis by RP-HPLC. (b) Analysis by SDS-PAGE. Amino Acid Sequence: The sequence of the first five N-terminal amino acids was determined and was found to be Met-Gln-Arg-Cys-Ser. Biological Activity: The ED 50 as determined by the dose-dependant stimulation of human MO7e cells is <0.5 ng/ml, corresponding to a specific activity of 2 x 10 6 IU/mg. small 2 µg Cat.N medium 10 µg Cat.N large 50 µg Cat.N

21 Recombinant Murine Interleukin-10 (rm IL-10) Synonyms : Cytokine synthesis inhibitory factor (CSIF), B-TCGF, TGIF, IL10A Introduction : IL10 is a cytokine produced primarily by monocytes and to a lesser extent by lymphocytes. This cytokine has pleiotropic effects in immunoregulation and inflammation. It down- regulates the expression of Th1 cytokines, MHC class II Ags and costimulatory molecules on macrophages. It also enhances B cell survival, proliferation and antibody production. This cytokine can block NF-kappa B activity and is involved in the regulation of the JAK-STAT signaling pathway.knockout studies in mice suggested the function of this cytokine as an essential immunoregulator in the intestinal tract. Description: Recombinant murine IL-10 produced in E.Coli is a single, glycosylated polypeptide chain containing 161 amino acids and having a molecular mass of Dalton. The rm IL-10 is purified by proprietary chromatographic techniques. Physical Appearance: Sterile filtered white lyophilized (freeze-dried) powder. Formulation: lyophilized from a 0.22 µm filtered carrier free solution in 25 mm TRIS, ph mm NaCl. Solubility: It is recommended to reconstitute the lyophilized rm IL-10 in sterile H 2 O not less than 100 µg/ml, Stability: Lyophilized rm IL-10 although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution rm IL-10 should be stored at 4 C between 2-7 days and for future use below -18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please avoid freeze-thaw cycles. Purity: Greater than 98.0% as determined by SDS-PAGE. Amino Acid Sequence: MSRGQYSRED NNCTHFPVGQ SHMLLELRTA FSQVKTFFQT KDQLDNILLT DSLMQDFKGY LGCQALSEMI QFYLVEVMPQ AEKHGPEIKE HLNSLGQKLK TLRMRLRRCH RFLPCENKSK AVEQVKSDFN KLEDQGVYKA MNEFDIFINC IEAYMMIKMK S Biological Activity: The ED 50 as determined by the dose-dependent co-stimulation with IL-4 of mouse MC-9 cells was found to be < 2 ng/ml, corresponding to a Specific Activity of 5x10 5 IU/mg. Endotoxicity: The endotoxin level is less than 0.1 ng per µg (1EU/µg) determined by LAL method small 2 µg Cat.N medium 10 µg Cat.N large 50 µg Cat.N x-large 250 µg Cat.N xx-large 1000 µg Cat.N

22 Recombinant Mouse Interleukin-11 (rm IL-11) Synonyms: Adipogenesis Inhibitory Factor (AGIF), Oprelvekin. Introduction: IL-11 is a member of the gp130 family of cytokines. These cytokines drive the assembly of multisubunit receptor complexes, all containing at least one molecule of the transmembrane signaling receptor IL6ST (gp130). IL-11 is shown to stimulate the T-cell-dependent development of immunoglobulin-producing B cells. It is also found to support the proliferation of hematopoietic stem cells and megakaryocyte progenitor cells. Description: Recombinant mouse IL-11 produced in E.Coli is a single, non-glycosylated polypeptide chain containing 179 amino acids and having a molecular mass of 19.2kDa. rm IL-11 is purified by proprietary chromatographic techniques. Formulation: lyophilized from a concentrated (1mg/ml) solution with no additives. Solubility: It is recommended to reconstitute the lyophilized rm IL-11 in sterile H 2 O not less than 100 µg/ml, Stability: Lyophilized rm IL-11 although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution rm IL-11 should be stored at 4 C between 2-7 days and for future use below -18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles. Purity: Greater than 95.0% as determined by: (a) Analysis by RP-HPLC. (b) Analysis by SDS-PAGE. Amino acid sequence: MPGPPAGSPR VSSDPRADLD SAVLLTRSLL ADTRQLAAQM RDKFPADGDH SLDSLPTLAM SAGTLGSLQL PGVLTRLRVD LMSYLRHVQW LRRAGGPSLK TLEPELGALQ ARLERLLRRL QLLMSRLALP QAAPDQPVIP LGPPASAWGS IRAAHAILGG LHLTLDWAVR GLLLLKTRL Biological Activity: The ED 50 as determined by the dose-dependant stimulation of the proliferation of mouse 7TD1 was found to be less then 1.5 ng/ml. small 2 µg Cat.N medium 10 µg Cat.N large 50 µg Cat.N

23 Recombinant Murine Interleukin-13 (rm IL-13) Synonyms: NC300, ALRH, BHR1, P600. Introduction: IL-13 is an immunoregulatory cytokine produced primarily by activated Th2 cells. IL-13 is involved in several stages of B-cell maturation and differentiation. It regulates CD23 and MHC class II expression up and promotes IgE isotype switching of B cells. IL-13 regulates macrophage activity down by inhibiting thereby the production of pro-inflammatory cytokines and chemokines. IL-13 is found to be critical to the pathogenesis of allergen-induced asthma but operates through mechanisms independent of IgE and eosinophils. This gene, IL- 3, IL-4, IL-5 and GM-CSF form a cytokine gene cluster on chromosome 5q, with this gene particularly close to IL-4. Description: Recombinant murine IL-13 produced in E.Coli is a single, non-glycosylated polypeptide chain containing 110 amino acids and having a molecular mass of 12 kda. The rm IL-13 is purified by proprietary chromatographic techniques. Source: Escherichia Coli Physical Appearance: Sterile filtered white lyophilized (freeze-dried) powder. Formulation: The protein (1mg/ml) was lyophilized with no additives. Solubility: It is recommended to reconstitute the lyophilized rm IL-13 in sterile H 2 O not less than 100 µg/ml, Stability: Lyophilized rm IL-13 although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution rm IL-13 should be stored at 4 C between 2-7 days and for future use below -18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles. Purity: Greater than 95% as determined by SDS-PAGE Amino Acid Sequence: The sequence of the first five N-terminal amino acids was determined and was found to be Met-Pro-Val-Pro-Arg. Biological Activity: The ED 50 was determined by the dose dependent proliferation of TF-1 cells and was found to be 2-6 ng/ml. small 2 µg Cat.N medium 10 µg Cat.N large 50 µg Cat.N

24 Recombinant Mouse Interleukin-15 (rm IL-15) Synonyms: none. Introduction: The protein encoded by this gene is a cytokine that regulates T and natural killer cell activation and proliferation. This cytokine and interleukine 2 share many biological activities. They are found to bind common hematopoietin receptor subunits, and may compete for the same receptor, and thus negatively regulate each other's activity. The number of CD8+ memory cells is shown to be controlled by a balance between this cytokine and IL2. This cytokine induces the activation of JAK kinases, as well as the phosphorylation and activation of transcription activators STAT3, STAT5, and STAT6. Studies of the mouse counterpart suggested that this cytokine may increase the expression of apoptosis inhibitor BCL2L1/BCL-x(L), possibly through the transcription activation activity of STAT6, and thus prevent apoptosis. Two alternatively spliced transcript variants of this gene encoding the same protein have been reported. Description: Recombinant Mouse IL-15 produced in E.Coli is a single, non-glycosylated polypeptide chain containing 115 amino acids and having a molecular mass of 13.3 kda. rm IL-15 is purified by proprietary chromatographic techniques. Formulation: The protein was lyophilized from a concentrated (1 mg/ml) solution with 10 mm NaP, ph 8.0. Solubility: It is recommended to reconstitute the lyophilized rm IL-15 in sterile H 2 O not less than 100 µg/ml, Stability: Lyophilized rm IL-15 although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution rm IL-15 should be stored at 4 C between 2-7 days and for future use below -18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles. Purity: Greater than 95.0% as determined by: (a) Analysis by RP-HPLC. (b) Analysis by SDS-PAGE. Amino acid sequence: The sequence of the first five N-terminal amino acids was determined and was found to be Met-Asn-Trp-Ile-Asp. Biological Activity: The ED 50 as determined by the dose-dependant stimulation of the proliferation of CTLL-2 was found to be 5 ng/ml, corresponding to a specific activity of 2 x 10 5 IU/mg. small 2 µg Cat.N medium 10 µg Cat.N large 50 µg Cat.N