title: The structure, expression and function prediction of DAZAP2, a down-regulated gene in multiple myeloma.
abstract: In our previous studies, DAZAP2 gene expression was down-regulated in untreated patients of multiple myeloma (MM). For better studying the structure and function of DAZAP2, a full-length cDNA was isolated from mononuclear cells of a normal human bone marrow, sequenced and deposited to Genbank (AY430097). This sequence has an identical ORF (open reading frame) as the NM_014764 from human testis and the D31767 from human cell line KG-1. Phylogenetic analysis and structure prediction reveal that DAZAP2 homologues are highly conserved throughout evolution and share a polyproline region and several potential SH2/SH3 binding sites. DAZAP2 occurs as a single-copy gene with a four-exon organization. We further noticed that the functional DAZAP2 gene is located on Chromosome 12 and its pseudogene gene is on Chromosome 2 with electronic location of human chromosome in Genbank, though no genetic abnormalities of MM have been reported on Chromosome 12. The ORF of human DAZAP2 encodes a 17-kDa protein, which is highly similar to mouse Prtb. The DAZAP2 protein is mainly localized in cytoplasm with a discrete pattern of punctuated distribution. DAZAP2 may associate with carcinogenesis of MM and participate in yet-to-be identified signaling pathways to regulate proliferation and differentiation of plasma cells.
authors.forename: Yiwu
authors.initials: Y
authors.lastname: Shi
authors.forename: Saiqun
authors.initials: S
authors.lastname: Luo
authors.forename: Jianbin
authors.initials: J
authors.lastname: Peng
authors.forename: Chenghan
authors.initials: C
authors.lastname: Huang
authors.forename: Daren
authors.initials: D
authors.lastname: Tan
authors.forename: Weixin
authors.initials: W
authors.lastname: Hu
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D002881:Chromosomes, Human, Pair 12 / Q000235:genetics*; D002889:Chromosomes, Human, Pair 2 / Q000235:genetics; D003593:Cytoplasm / Q000378:metabolism; D017931:DNA Primers; D018076:DNA, Complementary / Q000235:genetics; D015536:Down-Regulation; D040461:Gene Components; D006801:Humans; D016013:Likelihood Functions; D008957:Models, Genetic; D008969:Molecular Sequence Data; D009101:Multiple Myeloma / Q000235:genetics* / Q000378:metabolism; D010802:Phylogeny; D011544:Pseudogenes / Q000235:genetics; D016601:RNA-Binding Proteins / Q000235:genetics* / Q000378:metabolism*; D016415:Sequence Alignment; D017422:Sequence Analysis, DNA
chemical_list: C498224:DAZAP2 protein, human; D017931:DNA Primers; D018076:DNA, Complementary; D016601:RNA-Binding Proteins