Identification of a new G-to-A transition mutation at nucleotide position 129 of the Xrcc4 gene in ionizing radiation-hypersensitive mutant LX830 cells.

Identification of a new G-to-A transition mutation at nucleotide position 129 of the Xrcc4 gene in ionizing radiation-hypersensitive mutant LX830 cells.
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在电离辐射超敏感突变体 LX830 细胞中 Xrcc4 基因的核苷酸位置 129 处鉴定出新的 G 到 A 过渡突变。

DOI:
10.1269/jrr.44.353
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发表时间:
2003
影响因子:
2
通讯作者:
Koki Sato
Koki Sato
中科院分区:
医学4区
文献类型:
--
作者:
H. Itsukaichi;M. Mori;Atsuko Nakamura;Koki Sato

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小鼠淋巴瘤细胞系 LX830 是一种 X 射线过敏突变体。 LX830细胞与M10(Xrcc4缺陷细胞)或SX10(DNA连接酶IV缺陷细胞)细胞的辐射敏感突变体之间的互补测试表明,M10细胞不补充LX830细胞,但SX10细胞可以,这表明LX830细胞属于X射线交叉互补组(XRCC4)。 LX830 细胞中 Xrcc4 cDNA 的序列分析揭示了核苷酸位置 129 处的 G 到 A 的转变,这导致色氨酸 (43) 变为终止密码子。小鼠 Xrcc4 cDNA 的转染恢复了突变细胞的 X 射线敏感性。 LX830 是 Xrcc4 缺陷细胞系,在 Xrcc4 基因的外显子 2 中带有终止密码子,并且没有野生型 Xrcc4 基因。
The mouse lymphoma cell line LX830 is an X-ray-hypersensitive mutant. Complementation tests between LX830 cells and radiation-sensitive mutants of M10 (Xrcc4 deficient cells) or SX10 (DNA ligase IV deficient cells) cells showed that M10 cells did not complement LX830 cells, but SX10 cells did, suggesting that LX830 cells would belong to the X-ray-cross complementation group (XRCC4). A sequence analysis of Xrcc4 cDNA in LX830 cells disclosed a transition of G to A at nucleotide position 129, which resulted in a change of tryptophan (43) to a termination codon. Transfection of the mouse Xrcc4 cDNA rescued the X-ray sensitivity of the mutant cells. LX830 is an Xrcc4-deficient cell line bearing a termination codon in exon 2 of the Xrcc4 gene and no wild-type Xrcc4 gene.
DOI: 10.1126/science.8073286
发表时间: 1994-09-02
期刊: SCIENCE
影响因子: 56.9
作者:
TACCIOLI, GE;GOTTLIEB, TM;JEGGO, PA
通讯作者: JEGGO, PA