First Author | Tunyaplin C | Year | 2000 |
Journal | Nucleic Acids Res | Volume | 28 |
Issue | 24 | Pages | 4846-55 |
PubMed ID | 11121475 | Mgi Jnum | J:66441 |
Mgi Id | MGI:1928462 | Doi | 10.1093/nar/28.24.4846 |
Citation | Tunyaplin C, et al. (2000) Characterization of the B lymphocyte-induced maturation protein-1 (Blimp-1) gene, mRNA isoforms and basal promoter. Nucleic Acids Res 28(24):4846-55 |
abstractText | Blimp-1 is a transcriptional repressor that is both required and sufficient to trigger terminal differentiation of B lymphocytes and monocyte/macrophages. Here we report the organization of the mouse Blimp-1 gene, an analysis of Blimp-1 homologs in different species, the characterization of Blimp-1 mRNA isoforms and initial studies on the transcription of Blimp-1. The murine Blimp-1 gene covers approximately 23 kb and contains eight exons. There are Blimp-1 homologs in species evolutionarily distant from mouse (Caenorhabditis elegans and Drosophila melanogaster) but no homolog was found in the unicellular yeast Saccharomyces cerevisiae. The three major Blimp-1 mRNA isoforms result from the use of different polyadenylation sites and do not encode different proteins. Run-on transcription analyses were used to show that the developmentally regulated expression of Blimp-1 mRNA in B cells is determined by transcription initiation. Multiple Blimp-1 transcription initiates sites were mapped near an initiator element and a region conferring basal promoter activity has been identified. |