Cloning and chromosomal mapping of the human DNA polymerase theta (POLQ), the eighth human DNA polymerase.

Cloning and chromosomal mapping of the human DNA polymerase theta (POLQ), the eighth human DNA polymerase.
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第八种人类 DNA 聚合酶人类 DNA 聚合酶 theta (POLQ) 的克隆和染色体定位。

DOI:
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发表时间:
1999
期刊:
影响因子:
4.4
通讯作者:
William C. Copeland
William C. Copeland
中科院分区:
生物学3区
文献类型:
--
作者:
F. Sharief;P. Vojta;P. Ropp;William C. Copeland

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我们成功克隆了人类第八个DNA聚合酶DNA聚合酶θ的cDNA。人类cDNA编码一个推测的DNA聚合酶,包含1762个氨基酸,计算的分子质量为198 kDa。衍生的蛋白质序列与果蝇mus308蛋白产物同源,后者是一种被认为参与链间交联修复的DNA聚合酶解旋酶。C端区域包含典型的DNA聚合酶基序A, B和C,这些基序在A家族的DNA聚合酶中发现,其中包括大肠杆菌聚合酶i。n端区域包含假定的ATP结合结构域,但不包含解旋酶基序。通过辐射杂交分析,该基因被定位在染色体3q上,位于近端标记D3S1303和远端标记D3S3576的两侧,并且基于与细胞遗传学上已定位的基因的接近性,位于3q13.31带内。
We have cloned the cDNA for the eighth human DNA polymerase, DNA polymerase θ. The human cDNA encodes a putative DNA polymerase of 1762 amino acids with a calculated molecular mass of 198 kDa. The derived protein sequence is homologous to the Drosophila melanogaster mus308 protein product, a putative DNA polymerase-helicase involved in repair of interstrand crosslinks. The C-terminal region contains the canonical DNA polymerase motifs A, B, and C found in the family A type of DNA polymerases, which includes Escherichia coli polymerase I. The N-terminal region contains a putative ATP binding domain but not motifs for a helicase. The gene was mapped by radiation hybrid analysis to chromosome 3q within an interval flanked by proximal marker D3S1303 and distal marker D3S3576 and, based on proximity to a gene that has been mapped cytogenetically, within band 3q13.31.
DOI: 10.1093/nar/21.4.787
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