title: Comparative analysis of expression of two p97 homologues in Caenorhabditis elegans.
abstract: Caenorhabditis elegans possesses two p97/VCP/Cdc48p homologues, named CDC-48.1 (C06A1.1) and CDC-48.2 (C41C4.8), although their expression regulation and functional diversity have not yet been studied. We therefore investigated spatial and temporal expression patterns of two p97 homologues in this study. RT-PCR and Western blot analysis showed that the amount of cdc-48.1 was about twofold of that of cdc-48.2 in adults and that two p97 homologues were induced by ER stress. The amount of cdc-48.1 mRNA did not increase in the cdc-48.2 deletion mutant and vice versa. In situ hybridization showed that two p97 homologues are mainly expressed in germ cells. In vivo expression analysis by using GFP translational fusion constructs revealed that CDC-48.1::GFP was expressed from embryos through to adult worms, while CDC-48.2::GFP was expressed mainly in embryos. These results suggest that the expression of two p97 homologues of C. elegans is differently regulated and independent of each other.
authors.affiliation: Division of Molecular Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto University, 2-2-1 Honjo, Kumamoto 860-0811, Japan.
authors.forename: Seiji
authors.initials: S
authors.lastname: Yamauchi
authors.forename: Kunitoshi
authors.initials: K
authors.lastname: Yamanaka
authors.forename: Teru
authors.initials: T
authors.lastname: Ogura
mesh_terms: D000251:Adenosine Triphosphatases; D000818:Animals; D001483:Base Sequence; D015153:Blotting, Western; D017173:Caenorhabditis elegans / Q000235:genetics / Q000378:metabolism*; D029742:Caenorhabditis elegans Proteins / Q000032:analysis / Q000235:genetics / Q000502:physiology; D018797:Cell Cycle Proteins / Q000032:analysis* / Q000235:genetics / Q000378:metabolism; D004721:Endoplasmic Reticulum / Q000378:metabolism / Q000473:pathology; D005786:Gene Expression Regulation; D017403:In Situ Hybridization; D009154:Mutation; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D000074405:Valosin Containing Protein
chemical_list: D029742:Caenorhabditis elegans Proteins; D018797:Cell Cycle Proteins; D012333:RNA, Messenger; D000251:Adenosine Triphosphatases; D000074405:Valosin Containing Protein