Proto-oncogene vav is a protein that in humans is encoded by the VAV1gene.[5]
Function
The protein encoded by this proto-oncogene is a member of the Dbl family of guanine nucleotide exchange factors (GEF) for the Rho family of GTP binding proteins. The protein is important in hematopoiesis, playing a role in T-cell and B-cell development and activation. This particular GEF has been identified as the specific binding partner of Nef proteins from HIV-1. Coexpression and binding of these partners initiates profound morphological changes, cytoskeletal rearrangements and the JNK/SAPK signaling cascade, leading to increased levels of viral transcription and replication.[6]
^"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^"Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^Han J, Luby-Phelps K, Das B, Shu X, Xia Y, Mosteller RD, Krishna UM, Falck JR, White MA, Broek D (February 1998). "Role of substrates and products of PI 3-kinase in regulating activation of Rac-related guanosine triphosphatases by Vav". Science. 279 (5350): 558–60. Bibcode:1998Sci...279..558H. doi:10.1126/science.279.5350.558. PMID9438848.
^ abBertagnolo V, Marchisio M, Brugnoli F, Bavelloni A, Boccafogli L, Colamussi ML, Capitani S (April 2001). "Requirement of tyrosine-phosphorylated Vav for morphological differentiation of all-trans-retinoic acid-treated HL-60 cells". Cell Growth Differ. 12 (4): 193–200. PMID11331248.
^Marengère LE, Mirtsos C, Kozieradzki I, Veillette A, Mak TW, Penninger JM (July 1997). "Proto-oncoprotein Vav interacts with c-Cbl in activated thymocytes and peripheral T cells". J. Immunol. 159 (1): 70–6. PMID9200440.
^ abLee IS, Liu Y, Narazaki M, Hibi M, Kishimoto T, Taga T (January 1997). "Vav is associated with signal transducing molecules gp130, Grb2 and Erk2, and is tyrosine phosphorylated in response to interleukin-6". FEBS Lett. 401 (2–3): 133–7. doi:10.1016/s0014-5793(96)01456-1. PMID9013873. S2CID32632406.
^Perez-Villar JJ, Whitney GS, Sitnick MT, Dunn RJ, Venkatesan S, O'Day K, Schieven GL, Lin TA, Kanner SB (August 2002). "Phosphorylation of the linker for activation of T-cells by Itk promotes recruitment of Vav". Biochemistry. 41 (34): 10732–40. doi:10.1021/bi025554o. PMID12186560.
Greenway AL, Holloway G, McPhee DA, Ellis P, Cornall A, Lidman M (2004). "HIV-1 Nef control of cell signalling molecules: multiple strategies to promote virus replication". J. Biosci. 28 (3): 323–35. doi:10.1007/BF02970151. PMID12734410. S2CID33749514.
Katzav S (2007). "Flesh and blood: the story of Vav1, a gene that signals in hematopoietic cells but can be transforming in human malignancies". Cancer Lett. 255 (2): 241–54. doi:10.1016/j.canlet.2007.04.015. PMID17590270.
Adams JM, Houston H, Allen J, Lints T, Harvey R (1992). "The hematopoietically expressed vav proto-oncogene shares homology with the dbl GDP-GTP exchange factor, the bcr gene and a yeast gene (CDC24) involved in cytoskeletal organization". Oncogene. 7 (4): 611–8. PMID1565462.
Ramos-Morales F, Romero F, Schweighoffer F, Bismuth G, Camonis J, Tortolero M, Fischer S (1995). "The proline-rich region of Vav binds to Grb2 and Grb3-3". Oncogene. 11 (8): 1665–9. PMID7478592.
Machide M, Mano H, Todokoro K (1995). "Interleukin 3 and erythropoietin induce association of Vav with Tec kinase through Tec homology domain". Oncogene. 11 (4): 619–25. PMID7651724.