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| _ \ ___ | |_ (_) _ __ ___ __| | (_) __ _
| |_) | / _ \ | __| | | | '_ \ / _ \ / _| | | | / _ |
| _ < | __/ | |_ | | | |_) | | __/ | (_| | | | | (_| |
|_| \_\ \___| \__| |_| | .__/ \___| \__,_| |_| \__,_|
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Integrin Ξ²-3
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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Integrin Ξ²-3 (synonym CD61) ist ein OberflΓ€chenprotein aus der Gruppe der Integrine.
Contents
β’ Eigenschaften
β’ Weblinks
β’ Einzelnachweise
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
Eigenschaften
CD61 ist ein ZelladhΓ€sionsmolekΓΌl und besitzt mehrere Isoformen, von denen A und C in vielen Geweben gebildet werden, z. B. A in Osteoblasten und C in Prostata und Hoden. CD61 bildet mit Integrin Ξ±-V einen heterodimeren Rezeptor fΓΌr Cytotactin, Fibronectin, Laminin, Matrix-Metalloproteinase-2, Osteopontin, Osteomodulin, Prothrombin, Thrombospondin, Vitronectin, Von-Willebrand-Faktor, NRG1, FGF1, IGF1, Fibrillin-1 und Fraktalkin (synonym CX3CL1). Ebenso bildet es einen heterodimeren Rezeptor mit Integrin alpha-IIb fΓΌr Fibronectin, Fibrinogen, Plasminogen, Prothrombin, Thrombospondin und Vitronectin. Dabei wird die RGD-Sequenz bzw. H-H-L-G-G-G-A-K-Q-A-G-D-V (in der gamma-Kette des Fibrinogens) gebunden. Durch die Bindung des Fibrinogens wird die Blutgerinnung eingeleitet. Weiterhin ist es an der Angiogenese beteiligt, weshalb es zur Behandlung von Tumoren untersucht wird.cite-ref-1[1] PLA2G2A bindet an eine andere Bindungsstelle und moduliert die AffinitΓ€t zum Liganden der Rezeptorfunktion. CD61 ist glykosyliert und phosphoryliert. CD61 bindet zudem PTK2,cite-ref-pmid11927607-2-0[2]cite-ref-pmid9169439-3-0[3] ITGB3BP,cite-ref-pmid11864709-4-0[4]cite-ref-pmid7593198-5-0[5] TLN1cite-ref-pmid10497223-6-0[6]cite-ref-pmid11932255-7-0[7] und CIB1.cite-ref-pmid9030514-8-0[8]
Das Heterodimer aus Integrin Ξ±-V und Ξ²-3 ist der zellulΓ€re Rezeptor fΓΌr das Zytomegalievirus (HHV-5), HHV-8, das Coxsackievirus A9, das Hantavirus, das humane Metapneumovirus, das humane Parechovirus 1 und das West-Nil-Virus. Bei einer Infektion mit HIV verstΓ€rkt die Bindung des Tat-Proteins an das Heterodimer Ξ±-V/Ξ²-3 die Angiogenese in einem Kaposi-Sarkom.
Weblinks
Einzelnachweise
cite-note-pmid11927607-22. β B. P. Eliceiri, X. S. Puente, J. D. Hood, D. G. Stupack, D. D. Schlaepfer, X. Z. Huang, D. Sheppard, D. A. Cheresh: Src-mediated coupling of focal adhesion kinase to integrin alpha(v)beta5 in vascular endothelial growth factor signaling. In: Journal of Cell Biology. Band 157, Nummer 1, April 2002, S. 149β160, doi:10.1083/jcb.200109079, PMID 11927607, PMC 2173263 (freier Volltext).
cite-note-pmid9169439-33. β J. Chung, A. G. Gao, W. A. Frazier: Thrombspondin acts via integrin-associated protein to activate the platelet integrin alphaIIbbeta3. In: The Journal of biological chemistry. Band 272, Nummer 23, Juni 1997, S. 14740β14746, PMID 9169439.
cite-note-pmid11864709-44. β T. T. Fujimoto, S. Katsutani, T. Shimomura, K. Fujimura: Novel alternatively spliced form of beta(3)-endonexin. In: Thrombosis research. Band 105, Nummer 1, Januar 2002, S. 63β70, PMID 11864709.
cite-note-pmid7593198-55. β S. J. Shattil, T. OβToole, M. Eigenthaler, V. Thon, M. Williams, B. M. Babior, M. H. Ginsberg: Beta 3-endonexin, a novel polypeptide that interacts specifically with the cytoplasmic tail of the integrin beta 3 subunit. In: Journal of Cell Biology. Band 131, Nummer 3, November 1995, S. 807β816, PMID 7593198, PMC 2120613 (freier Volltext).
cite-note-pmid10497223-66. β S. Patil, A. Jedsadayanmata, J. D. Wencel-Drake, W. Wang, I. Knezevic, S. C. Lam: Identification of a talin-binding site in the integrin beta(3) subunit distinct from the NPLY regulatory motif of post-ligand binding functions. The talin n-terminal head domain interacts with the membrane-proximal region of the beta(3) cytoplasmic tail. In: The Journal of biological chemistry. Band 274, Nummer 40, Oktober 1999, S. 28575β28583, PMID 10497223.
cite-note-pmid11932255-77. β D. A. Calderwood, B. Yan, J. M. de Pereda, B. G. Alvarez, Y. Fujioka, R. C. Liddington, M. H. Ginsberg: The phosphotyrosine binding-like domain of talin activates integrins. In: The Journal of biological chemistry. Band 277, Nummer 24, Juni 2002, S. 21749β21758, doi:10.1074/jbc.M111996200, PMID 11932255.
cite-note-pmid9030514-88. β U. P. Naik, P. M. Patel, L. V. Parise: Identification of a novel calcium-binding protein that interacts with the integrin alphaIIb cytoplasmic domain. In: The Journal of biological chemistry. Band 272, Nummer 8, Februar 1997, S. 4651β4654, PMID 9030514.