PERANAN SITOSKELETON MENJAGA STABILITAS DAN ELASTISITAS

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2 Table of Contents No. Title Page 1 PERANAN SITOSKELETON MENJAGA STABILITAS DAN ELASTISITAS 2 PENGARUH PERUBAHAN LETAK TITIK BERAT DAN TITIK TUMPU TUBUH KERJA BUBUT POSISI BERDIRI ERGONOMIS TERHADAP KELELAHAN OTOT BIOMEKANIK 3 STUDY OF SOME BIOCHEMICAL PARAMETERS IN YOUNG MAN AS EFFECTED BY RAMADAN FASTING 4 PENGARUH CURCUMIN TERHADAP KEKUATAN KONTRAKSI JANTUNG TIKUS BETINA YANG DIPERLAKUKAN ISKEMIA â REPERFUSI DENGAN METODE LANGENDORFF 5 PLASTICITY BIOLOGIS SEL IMUNOKOMPETEN PADA PEMBERIAN DEXAMETHASON 6 PERAN LEPTIN DALAM MENINGKATKAN DENSITAS TULANG 0 0

3 Vol. 5 No. 2 / TOC :, and page : PERANAN SITOSKELETON MENJAGA STABILITAS DAN ELASTISITAS PERANAN SITOSKELETON MENJAGA STABILITAS DAN ELASTISITAS Abstract 1. Agustina Rahayu M > 2. Tjitra Wardani > Erythrocyte has bigger diameter than capillary but erythrocyte can through the capillary. Erythrocyte membrane is very elastic so the change of shape when entering capiler not influence erythrocyte membrane structure. The strength of this membrane is caused by cytoskeleton that prop up lipid bilayer membrane. When erythrocyte enter capillary, calcium level will increase that lead into many phosphorilation. Calcium elevation more than 106 M will cause calcium bind with calmodulin at the end of spectrin ï COOH. Calsiumcalmodulin binding activate PKC in adducin and protein 4.1. Activation of PKC cause spectrin binding site in Factin opened and make spectrin boound to Factin and lead to spectrin ï shortness. These interaction is called horizontal interaction. Calcium elevation more than 10 7 M, is caused vertical interaction through many phosforilation processes (spectrinankrynband 3, spectrinprotein 4.1band 3, spectrinprotein 4.1glycophorin C and spectrin protein 4.1 band 3), that pull on lipid bilayer membrane. By this horizontal and vertical interactions, erythrocyte membrane become stable and elastic when entering capillary. Keyword : cytoskeletal, erythrocyte, calcium, capillary,, Daftar Pustaka : 1. J P Anderson, (1987). The interaction of calmodulin with human erythrocyte spectrin. J Biochem 262. : 2. JS Morrow, (1987). The interaction of calmodulin with human erythrocyte spectrin. J Biochem 262. : 3. V Bennett, (0000). spectrin and ankyrin based pathways: metazoan inventions for integrating cells into tissues. Am J Physiol 81. : 4. A Baines, (0000). spectrin and ankyrin based pathways: metazoan inventions for integrating cells into tissues. Am J Physiol 81. : 5. S H Chang, (2001). Regulation of the glycophorin Cprotein 4.1 membrane to skeleton bridge and evaluation of its contribution to erythrocyte membrane stability. J Biochem 276. : 6. P S Low, (2001). Regulation of the glycophorin Cprotein 4.1 membrane to skeleton bridge and evaluation of its contribution to erythrocyte membrane stability. J Biochem 276. : 7. RH Chen, (1997). The role of the PH domain in the signaldependent membrane targeting of Sos. EMBO Journal 16. : 8. G S Corbalan, (1997). The role of the PH domain in the signaldependent membrane targeting of Sos. EMBO Journal 16. : 9. S D Bar, (1997). The role of the PH domain in the signaldependent membrane targeting of Sos. EMBO Journal 16. : 10. L Cherry, (1999). Interactions of the ï spectrin Nterminal region with ï spectrin J Biochem 274. : 11. N Menhart, (1999). Interactions of the ï spectrin Nterminal region with ï spectrin J Biochem 274. : 12. F L WoMei, (1999). Interactions of the ï spectrin Nterminal region with ï spectrin J Biochem 274. : 13. C M Cohen, (1980). Spectrindependent and â independent association of Factin with the erythrocyte membrane J Cell Biology 86. : 14. S F Foley, (1980). Spectrindependent and â independent association of Factin with the erythrocyte membrane J Cell Biology 86. : 15. V M Fowler, (1990). Tropomodulin: a cytoskeletal protein that binds to the end of erythrocyte tropomyosin and inhibits tropomyosin binding to actin J Cell Biology 111. : 16. V Fowler, (2000). Models for actin filament organization in the erythrocyte membrane skeleton. Blood 96. : 17. AC Guyton, (2000). Text book of medical physiology. Philadelphia : WB Sauders Co 18. JE Hall, (2000). Text book of medical physiology. Philadelphia : WB Sauders Co 19. R Khanna, (2002). Headpiece domain of dematin is required for the stability of the erythrocyte membrane PNAS 99. : 20. S H Chang, (2002). Headpiece domain of dematin is required for the stability of the erythrocyte membrane PNAS 99.

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