Transcriptional activator protein Pur-beta is a protein that in humans is encoded by the PURBgene.[1][2]
This gene product is a sequence-specific, single-stranded DNA-binding protein. It binds preferentially to the single strand of the purine-rich element termed PUR, which is present at origins of replication and in gene flanking regions in a variety of eukaryotes from yeasts through humans. Thus, it is implicated in the control of both DNA replication and transcription. Deletion of this gene has been associated with myelodysplastic syndrome and acute myelogenous leukemia.[2]
Kelm RJ, Cogan JG, Elder PK, et al. (1999). "Molecular interactions between single-stranded DNA-binding proteins associated with an essential MCAT element in the mouse smooth muscle alpha-actin promoter". J. Biol. Chem. 274 (20): 14238–45. doi:10.1074/jbc.274.20.14238. PMID10318844.
Lezon-Geyda K, Najfeld V, Johnson EM (2001). "Deletions of PURA, at 5q31, and PURB, at 7p13, in myelodysplastic syndrome and progression to acute myelogenous leukemia". Leukemia. 15 (6): 954–62. doi:10.1038/sj.leu.2402108. PMID11417483.
Hillier LW, Fulton RS, Fulton LA, et al. (2003). "The DNA sequence of human chromosome 7". Nature. 424 (6945): 157–64. doi:10.1038/nature01782. PMID12853948.
Gupta M, Sueblinvong V, Raman J, et al. (2004). "Single-stranded DNA-binding proteins PURalpha and PURbeta bind to a purine-rich negative regulatory element of the alpha-myosin heavy chain gene and control transcriptional and translational regulation of the gene expression. Implications in the repression of alpha-myosin heavy chain during heart failure". J. Biol. Chem. 278 (45): 44935–48. doi:10.1074/jbc.M307696200. PMID12933792.
Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID14702039.
