Genomic structure and transcriptional regulation of Che-1, a novel partner of Rb.
We recently identified and cloned a novel human gene, Che-1, whose product interacts with both RNA polymerase II and the retinoblastoma gene product (Rb). Furthermore, we found that Che-1 overexpression counteracts the growth inhibitory effects of Rb, regulating in such way both transcription and cell proliferation. In this paper, we describe the genomic organization of the mouse orthologous Che-1 gene and its promoter region. The promoter is TATA less and presents several potential transcription factor-binding motifs. Importantly, we showed that Che-1 expression is regulated by a negative feedback mechanism, in which this protein is present on its own promoter repressing transcription.
Monaco
Lucia
L
Istituto Pasteur Fondazione Cenci-Bolognetti, Department of Human Physiology and Pharmacology, University La Sapienza, Rome, Italy.
Passananti
Claudio
C
Fanciulli
Maurizio
M
D000595:Amino Acid Sequence; D000818:Animals; D051017:Apoptosis Regulatory Proteins; D001483:Base Sequence; D002478:Cells, Cultured; D003001:Cloning, Molecular; D004247:DNA / Q000737:chemistry / Q000235:genetics; D018076:DNA, Complementary / Q000737:chemistry / Q000235:genetics; D005091:Exons; D005260:Female; D005786:Gene Expression Regulation; D005796:Genes / Q000235:genetics*; D006801:Humans; D007438:Introns; D008156:Luciferases / Q000235:genetics / Q000378:metabolism; D008297:Male; D051379:Mice; D008969:Molecular Sequence Data; D041681:NIH 3T3 Cells; D011401:Promoter Regions, Genetic / Q000235:genetics; D011485:Protein Binding; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D011993:Recombinant Fusion Proteins / Q000235:genetics / Q000378:metabolism; D012097:Repressor Proteins / Q000235:genetics* / Q000378:metabolism; D016160:Retinoblastoma Protein / Q000378:metabolism*; D017422:Sequence Analysis, DNA; D014157:Transcription Factors / Q000235:genetics* / Q000378:metabolism; D014158:Transcription, Genetic; D014162:Transfection
C402637:AATF protein, human; D051017:Apoptosis Regulatory Proteins; D018076:DNA, Complementary; D012333:RNA, Messenger; D011993:Recombinant Fusion Proteins; D012097:Repressor Proteins; D016160:Retinoblastoma Protein; D014157:Transcription Factors; D004247:DNA; D008156:Luciferases