Article: Developmental timing in C. elegans is regulated by kin-20 and tim-1, homologs of core circadian clock genes.
2005 Volume 8, Issue 2, Page(s) 287–295
Abstract: ... a 24 hr day/night cycle. We show a role for two other circadian gene homologs, tim-1 and kin-20 ... in the developmental timer. Along with lin-42, tim-1 and kin-20, the C. elegans homologs of the Drosophila ...
Abstract | In Caenorhabditis elegans, heterochronic genes constitute a developmental timer that specifies temporal cell fate selection. The heterochronic gene lin-42 is the C. elegans homolog of Drosophila and mammalian period, key regulators of circadian rhythms, which specify changes in behavior and physiology over a 24 hr day/night cycle. We show a role for two other circadian gene homologs, tim-1 and kin-20, in the developmental timer. Along with lin-42, tim-1 and kin-20, the C. elegans homologs of the Drosophila circadian clock genes timeless and doubletime, respectively, are required to maintain late-larval identity and prevent premature expression of adult cell fates. The molecular parallels between circadian and developmental timing pathways suggest the existence of a conserved molecular mechanism that may be used for different types of biological timing. |
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MeSH term(s) | Animals ; Animals, Genetically Modified ; Caenorhabditis elegans/genetics ; Caenorhabditis elegans/growth & development ; Caenorhabditis elegans/metabolism ; Caenorhabditis elegans Proteins/genetics ; Caenorhabditis elegans Proteins/metabolism ; Casein Kinase Idelta/genetics ; Casein Kinase Idelta/metabolism ; Circadian Rhythm/genetics ; Gene Expression Regulation, Developmental ; Genes, Helminth ; Isoenzymes/genetics ; Isoenzymes/metabolism ; MicroRNAs ; Models, Biological ; Molecular Sequence Data ; Mutation ; Phenotype ; Phylogeny ; RNA Interference |
Chemical Substances | Caenorhabditis elegans Proteins ; Isoenzymes ; MicroRNAs ; TIM-1 protein, C elegans ; let-7 microRNA, C elegans ; Casein Kinase Idelta (EC 2.7.11.1) |
Language | English |
Publishing date | 2005-02 |
Publishing country | United States |
Document type | Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, P.H.S. |
ZDB-ID | 2054967-2 |
ISSN | 1878-1551 ; 1534-5807 |
ISSN (online) | 1878-1551 |
ISSN | 1534-5807 |
DOI | 10.1016/j.devcel.2004.12.006 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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