Characterization of Ce-atl-1, an ATM-like gene from Caenorhabditis elegans

H. Aoki, S. Sato, T. Takanami, Takeshi Ishihara, I. Katsura, H. Takahashi, A. Higashitani

研究成果: ジャーナルへの寄稿記事

19 引用 (Scopus)

抜粋

An ATM-like gene was identified in the genome of Caenorhabditis elegans. The putative product of the gene, termed Ce-atl-1 (C. elegans ATM-like 1) consists of 2514 amino acid residues. The C-terminal sequence, which contains a PI-3 kinase-like domain, showed good homology with the products of the gene MEC1/ESR1 from budding yeast, the rad3+ gene of fission yeast and mammalian ATR (ataxia-telangiectasia and rad3+ related) genes. The results of RNA-mediated interference indicated that the major phenotype associated with repression of Ce-atl-1 was lethality (approximately 50-80%) during early embryogenesis. Among the surviving progeny, males (XO animals) arose at a high frequency (2-30%). In addition, 5% of oocyte chromosomes demonstrated aneuploidy due to a defect in pre-meiotic chromosomal segregation. Gene expression analyses indicated that Ce-atl-1 mRNA was expressed in all larval stages and that its level increased about fivefold in the adult stage. The adult expression level was decreased in the glp-4 mutant, which is defective in germ line proliferation. Ce-atl-1 was strongly expressed in both the mitotic and meiotic cells of adult gonads. In summary, Ce-atl-1 appears to be important for early embryogenesis, and loss of its function results in a defect in chromosome segregation, similar to what has been observed for AT-related proteins.

元の言語英語
ページ(範囲)119-126
ページ数8
ジャーナルMolecular and General Genetics
264
発行部数1-2
DOI
出版物ステータス出版済み - 1 1 2000
外部発表Yes

    フィンガープリント

All Science Journal Classification (ASJC) codes

  • Genetics

これを引用

Aoki, H., Sato, S., Takanami, T., Ishihara, T., Katsura, I., Takahashi, H., & Higashitani, A. (2000). Characterization of Ce-atl-1, an ATM-like gene from Caenorhabditis elegans. Molecular and General Genetics, 264(1-2), 119-126. https://doi.org/10.1007/s004380000291