The human PMS2L proteins do not interact with hMLH1, a major DNA mismatch repair protein.

The human PMS2L proteins do not interact with hMLH1, a major DNA mismatch repair protein.
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人类 PMS2L 蛋白不与 hMLH1(一种主要的 DNA 错配修复蛋白)相互作用。

DOI:
10.1093/oxfordjournals.jbchem.a022354
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发表时间:
1999
影响因子:
2.7
通讯作者:
S. Fukushige
S. Fukushige
中科院分区:
生物学4区
文献类型:
--
作者:
E. Kondo;A. Horii;S. Fukushige

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人类PMS2基因编码一种与遗传性非息肉病性结直肠癌(HNPCC)相关的细菌muL同源物。HPMS2基因的一个有趣的特征是它是一个多基因家族的一部分,该家族定位于染色体7p22、7p12-p13、7q11和7q22。在这里,我们报告了四个新发现的hPMS2样蛋白(PMS2L)基因。PMS2L基因家族的四个新成员都编码由hPMS2的氨基末端部分组成的相对较短的多肽,并且除了在心脏中表达外,在其他地方都有表达。为了阐明PMS2L多肽是否通过与hMLH1的相互作用而参与DNA错配修复(MMR)途径,我们使用hPMS2突变细胞系HEC-1-A进行了酵母双杂交试验和免疫沉淀研究。我们的结果清楚地表明,hMLH1不与两个具有代表性的PMS2相互作用,而hPMS2的羧基末端部分,而不是氨基末端部分,确实与hMLH1相互作用。因此,PMS2L不太可能通过与hMLH1结合而参与MMR途径,它们必须在活细胞中发挥其他作用。
The human PMS2 gene encodes one of the bacterial mutL homologs that is associated with hereditary nonpolyposis colorectal cancer (HNPCC). One of the interesting features of the hPMS2 gene is that it is part of a multiple gene family which is localized on chromosome bands 7p22, 7p12-p13, 7q11, and 7q22. Here we report four newly identified hPMS2-like (PMS2L) genes. All four novel members of the PMS2L gene family encode relatively short polypeptides composed of the amino-terminal portion of hPMS2 and are expressed ubiquitously except in the heart. To clarify whether the PMS2L polypeptides contribute to the DNA mismatch repair (MMR) pathway through an interaction with hMLH1, we have performed a yeast two-hybrid assay and an immunoprecipitation study using an hPMS2 mutant cell line, HEC-1-A. Our results clearly indicate that hMLH1 does not interact with two representative PMS2Ls, whereas the carboxyl-terminal portion of hPMS2, not the amino-terminal portion, does interact with hMLH1. Thus, PMS2Ls are not likely to participate in the MMR pathway through association with hMLH1; they must play some other roles in the living cells.
使用双杂交系统在酵母中脊椎动物螺旋-环-螺旋蛋白之间的相互作用。
DOI: --
发表时间: 1993
期刊: The Journal of biological chemistry
影响因子: --
作者:
Staudinger,J;Perry,M;Elledge,SJ;Olson,EN
通讯作者: Olson,EN
DOI: 10.1073/pnas.92.6.1950
发表时间: 1995-03-14
影响因子: 11.1
作者:
LI, GM;MODRICH, P
通讯作者: MODRICH, P
DOI: 10.1073/pnas.93.24.13629
发表时间: 1996-11-26
影响因子: 11.1
作者:
Acharya, S;Wilson, T;Fishel, R
通讯作者: Fishel, R