title: Cyclin E expression during development in Caenorhabditis elegans.
abstract: Our interest in the coordination of cell cycle control and differentiation has led us to investigate the Caenorhabditis elegans cye-1 gene encoding the G(1) cell cycle regulator cyclin E. We have studied the expression and function of cye-1 by using monoclonal antibodies directed against CYE-1 protein, cye-1::GFP reporter genes, and a cye-1 chromosomal deletion mutation. We show that a ubiquitous embryonic pattern of expression becomes restricted and dynamic during postembryonic development. Promoter analysis reveals a relatively small region of cis-acting sequences that are necessary for the complex pattern of expression of this gene. Our studies demonstrate that two other G(1) cell cycle genes, encoding cyclin D and CDK4/6, have similarly compact promoter requirements. This suggests that a relatively simple mechanism of regulation may underlie the dynamic developmental patterns of expression exhibited by these three G(1) cell cycle genes. Our analysis of a new cye-1 deletion allele confirms and extends previous studies of two point mutations in the gene.
authors.affiliation: Laboratory of Molecular Biology, NIDDK, NIH, Bethesda, MD 20892, USA.
authors.forename: Thomas M
authors.initials: TM
authors.lastname: Brodigan
authors.forename: J i
authors.initials: Ji
authors.lastname: Liu
authors.forename: Morgan
authors.initials: M
authors.lastname: Park
authors.forename: Edward T
authors.initials: ET
authors.lastname: Kipreos
authors.forename: Michael
authors.initials: M
authors.lastname: Krause
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D017173:Caenorhabditis elegans / Q000166:cytology / Q000235:genetics / Q000254:growth & development*; D019927:Cyclin E / Q000737:chemistry / Q000235:genetics*; D017931:DNA Primers; D016193:G1 Phase; D008969:Molecular Sequence Data; D020133:Reverse Transcriptase Polymerase Chain Reaction; D017386:Sequence Homology, Amino Acid; D012689:Sequence Homology, Nucleic Acid
chemical_list: D019927:Cyclin E; D017931:DNA Primers