Growth regulation of the expression of mouse cDNA and gene encoding a serine/threonine kinase related to Saccharomyces cerevisiae CDC7 essential for G1/S transition. Structure, chromosomal localization, and expression of mouse gene for s. cerevisiae Cdc7-related kinase.
Saccharomyces cerevisiae CDC7 encodes a serine/threonine kinase required for G1/S transition of the yeast cells. We previously reported human and Xenopus cDNAs encoding CDC7-related kinases and suggested the possibility that chromosomal replication of higher eukaryotes may be regulated through conserved mechanisms involving Cdc7-related kinases. Here we report a murine cDNA and gene (muCdc7) encoding a serine/threonine kinase related to CDC7. The predicted coding frame for the longest cDNA for muCdc7 consists of 564 amino acids, which shares 46, 77, and 93% identity, respectively, with those of budding yeast, Xenopus, and human in kinase conserved domains. The chromosomal gene for muCdc7, located at the band 5E5 on the mouse chromosome 5, consists of 12 exons, and its exon/intron organization shares some similarity with that of other protein kinases including Cdk and cAMP-dependent kinase. Transcription of muCdc7, initiated at multiple sites over the 370-base pair promoter region, is repressed in the resting state and is induced at the G1/S boundary after growth factor stimulation in a growth factor-dependent cell line. Transient transfection assays indicated that a 231-base pair segment of the muCdc7 promoter containing three putative E2F binding sites and one Sp1 site but lacking TATA sequence is sufficient for response to growth stimulation.
Department of Molecular and Developmental Biology, Institute of Medical Science, University of Tokyo, 4-6-1, Shirokanedai, Minato-ku, Tokyo 108-8639, Japan.
J M
JM
Kim
N
N
Sato
M
M
Yamada
K
K
Arai
H
H
Masai
D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D018797:Cell Cycle Proteins / Q000096:biosynthesis / Q000235:genetics*; D002874:Chromosome Mapping; D003001:Cloning, Molecular; D018076:DNA, Complementary; D005091:Exons; D016193:G1 Phase; D005786:Gene Expression Regulation; D017404:In Situ Hybridization, Fluorescence; D007399:Interphase / Q000235:genetics*; D007438:Introns; D051379:Mice; D008969:Molecular Sequence Data; D011401:Promoter Regions, Genetic; D017346:Protein Serine-Threonine Kinases / Q000096:biosynthesis / Q000235:genetics*; D016196:S Phase; D012441:Saccharomyces cerevisiae / Q000235:genetics; D029701:Saccharomyces cerevisiae Proteins; D017422:Sequence Analysis, DNA; D017386:Sequence Homology, Amino Acid; D014158:Transcription, Genetic; D029867:Xenopus Proteins
D018797:Cell Cycle Proteins; D018076:DNA, Complementary; D029701:Saccharomyces cerevisiae Proteins; D029867:Xenopus Proteins; C489404:CDC7 protein, S cerevisiae; C489405:CDC7 protein, Xenopus; C489403:Cdc7 protein, mouse; D017346:Protein Serine-Threonine Kinases