title: Multiple gene duplication and expression of mouse bcl-2-related genes, A1.
abstract: Here we report the genomic cloning and characterization of the murine A1 genes, which belong to the bcl-2 gene family. Southern analysis indicated the existence of at least four A1 genes in the murine genome and four different A1 genes, designated A1-a, -b, -c and -d, were cloned from the murine genomic library. The A1-a, -b and -d genes consisted of two exons, whereas the A1-c gene contained 1 bp insertion in the coding region which may result in an aberrant and truncated protein by frame-shift. With the exception of A1-c, the coding regions among A1 genes are highly conserved at >97% at the nucleotide level and at >96% at the amino acid level. A1-a, -b and -d genes appeared to be expressed specifically in organs containing many neutrophils. In neutrophils, A1-a, -b and -d transcripts were detected at a comparable level. Our data suggest that the multiple A1 genes in mice were generated by gene duplication and each of them may function as anti-apoptotic molecules in neutrophils.
authors.affiliation: Department of Molecular and Cellular Biology, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Hatakeyama
authors.forename: A
authors.initials: A
authors.lastname: Hamasaki
authors.forename: I
authors.initials: I
authors.lastname: Negishi
authors.forename: D Y
authors.initials: DY
authors.lastname: Loh
authors.forename: F
authors.initials: F
authors.lastname: Sendo
authors.forename: K
authors.initials: K
authors.lastname: Nakayama
authors.forename: K
authors.initials: K
authors.lastname: Nakayama
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D003001:Cloning, Molecular; D017931:DNA Primers / Q000235:genetics; D018076:DNA, Complementary / Q000235:genetics; D004268:DNA-Binding Proteins / Q000235:genetics; D015870:Gene Expression; D019254:Genes, bcl-2; D018398:Homeodomain Proteins; D006801:Humans; D051379:Mice; D008810:Mice, Inbred C57BL; D015778:Minor Histocompatibility Antigens; D008969:Molecular Sequence Data; D005810:Multigene Family; D016133:Polymerase Chain Reaction; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000235:genetics; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D051818:Replication Protein C; D012097:Repressor Proteins; D015183:Restriction Mapping; D029701:Saccharomyces cerevisiae Proteins; D017386:Sequence Homology, Amino Acid; D012689:Sequence Homology, Nucleic Acid
chemical_list: C096816:BCL2-related protein A1; D017931:DNA Primers; D018076:DNA, Complementary; D004268:DNA-Binding Proteins; D018398:Homeodomain Proteins; C096063:MATA1 protein, S cerevisiae; D015778:Minor Histocompatibility Antigens; D019253:Proto-Oncogene Proteins c-bcl-2; D012333:RNA, Messenger; D012097:Repressor Proteins; D029701:Saccharomyces cerevisiae Proteins; D051818:Replication Protein C