title: Differential expression pattern of UBX family genes in Caenorhabditis elegans.
abstract: UBX (ubiquitin regulatory X)-containing proteins belong to an evolutionary conserved protein family and determine the specificity of p97/VCP/Cdc48p function by binding as its adaptors. Caenorhabditis elegans was found to possess six UBX-containing proteins, named UBXN-1 to -6. However, no general or specific function of them has been revealed. During the course of understanding not only their function but also specified function of p97, we investigated spatial and temporal expression patterns of six ubxn genes in this study. Transcript analyses showed that the expression pattern of each ubxn gene was different throughout worm's development and may show potential developmental dynamics in their function, especially ubxn-5 was expressed specifically in the spermatogenic germline, suggesting a crucial role in spermatogenesis. In addition, as ubxn-4 expression was induced by ER stress, it would function as an ERAD factor in C. elegans. In vivo expression analysis by using GFP translational fusion constructs revealed that six ubxn genes show distinct expression patterns. These results altogether demonstrate that the expression of all six ubxn genes of C. elegans is differently regulated.
authors.affiliation: Division of Molecular Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto University, 2-2-1 Honjo, Kumamoto, Japan.
authors.forename: Seiji
authors.initials: S
authors.lastname: Yamauchi
authors.forename: Yohei
authors.initials: Y
authors.lastname: Sasagawa
authors.forename: Teru
authors.initials: T
authors.lastname: Ogura
authors.forename: Kunitoshi
authors.initials: K
authors.lastname: Yamanaka
mesh_terms: D000251:Adenosine Triphosphatases / Q000378:metabolism*; D000818:Animals; D017173:Caenorhabditis elegans / Q000378:metabolism*; D029742:Caenorhabditis elegans Proteins / Q000378:metabolism*; D018797:Cell Cycle Proteins / Q000378:metabolism*; D018507:Gene Expression Regulation, Developmental / Q000502:physiology*; D009928:Organ Specificity; D013091:Spermatogenesis / Q000502:physiology*; D014018:Tissue Distribution; D025801:Ubiquitin / Q000378:metabolism*; D000074405:Valosin Containing Protein
chemical_list: D029742:Caenorhabditis elegans Proteins; D018797:Cell Cycle Proteins; D025801:Ubiquitin; D000251:Adenosine Triphosphatases; D000074405:Valosin Containing Protein