POU2AF1

Template:Short description An Error has occurred retrieving Wikidata item for infobox POU domain class 2-associating factor 1 is a protein that in humans is encoded by the POU2AF1 gene. The protein is also termed Oct coactivator from B cells (i.e. OCAB), Oct binding factor 1 (OBF1 or OBF-1), and, as commonly found in the literature, BOB1. BOB1 is a transcriptional coactivator (i.e. a protein that controls the activity of transcription factors) which is expressed principally by B-cell lymphocytes and controls immunoglobulin and other genes critical for these cells expression of CD20, CRISP-3, and CD36. The expression of BOB1 has proven useful for identifying certain lymphomas as being B-cell lymphomas, as exemplified in studies which use BOB1 expression to help identify lymphomas as being diffuse large B-cell lymphomas, not otherwise specified.

Interactions

POU2AF1 has been shown to interact with:

• POU2F1 and
• SIAH1.

See also

• POU domain
• POU domain class 2 transcription factors:
  • POU2F1, POU2F2, POU2F3

Further reading

• Teitell MA (2004). "OCA-B regulation of B-cell development and function". Trends Immunol. 24 (10): 546–53. doi:10.1016/j.it.2003.08.002. PMID 14552839.
• Luo Y, Roeder RG (1995). "Cloning, functional characterization, and mechanism of action of the B-cell-specific transcriptional coactivator OCA-B". Mol. Cell. Biol. 15 (8): 4115–24. doi:10.1128/MCB.15.8.4115. PMC 230650. PMID 7623806.
• Gstaiger M, Knoepfel L, Georgiev O, Schaffner W, Hovens CM (1995). "A B-cell coactivator of octamer-binding transcription factors". Nature. 373 (6512): 360–2. Bibcode:1995Natur.373..360G. doi:10.1038/373360a0. PMID 7779176. S2CID 4303288.
• Strubin M, Newell JW, Matthias P (1995). "OBF-1, a novel B cell-specific coactivator that stimulates immunoglobulin promoter activity through association with octamer-binding proteins". Cell. 80 (3): 497–506. doi:10.1016/0092-8674(95)90500-6. PMID 7859290. S2CID 6139601.
• Galiègue-Zouitina S, Quief S, Hildebrand MP, Denis C, Lecocq G, Collyn-d'Hooghe M, Bastard C, Yuille M, Dyer MJ, Kerckaert JP (1996). "Fusion of the LAZ3/BCL6 and BOB1/OBF1 genes by t(3; 11) (q27; q23) chromosomal translocation". Comptes Rendus de l'Académie des Sciences, Série III. 318 (11): 1125–31. PMID 8574789.
• Zwilling S, Dieckmann A, Pfisterer P, Angel P, Wirth T (1997). "Inducible expression and phosphorylation of coactivator BOB.1/OBF.1 in T cells". Science. 277 (5323): 221–5. doi:10.1126/science.277.5323.221. PMID 9211847.
• Sauter P, Matthias P (1998). "The B cell-specific coactivator OBF-1 (OCA-B, Bob-1) is inducible in T cells and its expression is dispensable for IL-2 gene induction". Immunobiology. 198 (1–3): 207–16. doi:10.1016/S0171-2985(97)80041-1. PMID 9442392.
• Luo Y, Ge H, Stevens S, Xiao H, Roeder RG (1998). "Coactivation by OCA-B: Definition of Critical Regions and Synergism with General Cofactors". Mol. Cell. Biol. 18 (7): 3803–10. doi:10.1128/mcb.18.7.3803. PMC 108964. PMID 9632764.
• Sauter P, Matthias P (1998). "Coactivator OBF-1 Makes Selective Contacts with Both the POU-Specific Domain and the POU Homeodomain and Acts as a Molecular Clamp on DNA". Mol. Cell. Biol. 18 (12): 7397–409. doi:10.1128/MCB.18.12.7397. PMC 109321. PMID 9819426.
• Chasman D, Cepek K, Sharp PA, Pabo CO (1999). "Crystal structure of an OCA-B peptide bound to an Oct-1 POU domain/octamer DNA complex: specific recognition of a protein-DNA interface". Genes Dev. 13 (20): 2650–7. doi:10.1101/gad.13.20.2650. PMC 317104. PMID 10541551.
• Tomilin A, Reményi A, Lins K, Bak H, Leidel S, Vriend G, Wilmanns M, Schöler HR (2001). "Synergism with the coactivator OBF-1 (OCA-B, BOB-1) is mediated by a specific POU dimer configuration". Cell. 103 (6): 853–64. doi:10.1016/S0092-8674(00)00189-6. hdl:2066/187502. PMID 11136971. S2CID 14650955.
• Lee L, Stollar E, Chang J, Grossmann JG, O'Brien R, Ladbury J, Carpenter B, Roberts S, Luisi B (2001). "Expression of the Oct-1 transcription factor and characterization of its interactions with the Bob1 coactivator". Biochemistry. 40 (22): 6580–8. doi:10.1021/bi010095x. PMID 11380252.
• Tiedt R, Bartholdy BA, Matthias G, Newell JW, Matthias P (2001). "The RING finger protein Siah-1 regulates the level of the transcriptional coactivator OBF-1". EMBO J. 20 (15): 4143–52. doi:10.1093/emboj/20.15.4143. PMC 149178. PMID 11483517.
• Boehm J, He Y, Greiner A, Staudt L, Wirth T (2001). "Regulation of BOB.1/OBF.1 stability by SIAH". EMBO J. 20 (15): 4153–62. doi:10.1093/emboj/20.15.4153. PMC 149152. PMID 11483518.
• Malone CS, Wall R (2002). "Bob1 (OCA-B/OBF-1) differential transactivation of the B cell-specific B29 (Ig beta) and mb-1 (Ig alpha) promoters". J. Immunol. 168 (7): 3369–75. doi:10.4049/jimmunol.168.7.3369. PMID 11907094.
• Casellas R, Jankovic M, Meyer G, Gazumyan A, Luo Y, Roeder R, Nussenzweig M (2003). "OcaB is required for normal transcription and V(D)J recombination of a subset of immunoglobulin kappa genes". Cell. 110 (5): 575–85. doi:10.1016/S0092-8674(02)00911-X. PMID 12230975. S2CID 17887117.
• Schaffer A, Kim EC, Wu X, Zan H, Testoni L, Salamon S, Cerutti A, Casali P (2003). "Selective inhibition of class switching to IgG and IgE by recruitment of the HoxC4 and Oct-1 homeodomain proteins and Ku70/Ku86 to newly identified ATTT cis-elements". J. Biol. Chem. 278 (25): 23141–50. doi:10.1074/jbc.M212952200. PMID 12672812.
• Lins K, Reményi A, Tomilin A, Massa S, Wilmanns M, Matthias P, Schöler HR (2003). "OBF1 enhances transcriptional potential of Oct1". EMBO J. 22 (9): 2188–98. doi:10.1093/emboj/cdg199. PMC 156071. PMID 12727885.