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DNA错配修复系统研究进展 被引量:5

Advances of Researches on DNA Mismatch Repair System
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摘要 DNA错配修复 (mismatchrepair ,MMR)系统广泛存在于生物体中 .从原核生物大肠杆菌到真核生物及人类 ,MMR系统有不同的组成成分和修复机制 .人体内MMR基因缺陷会造成基因组的不稳定并诱发遗传性非息肉型直肠癌以及其他自发性肿瘤 .大肠杆菌MMR系统中的MutS蛋白可特异识别错配或未配对碱基 ,目前已经发展了多种基于MutS蛋白的基因突变 /多态性检测技术 . DNA mismatch repair system exists in nearly all originisms. They have different components and mechanisms from prokaryote E. coli to eukaryote and human. Defects in human mismatch repair genes cause genome instability and hereditary nonpolyposis colon cancer (HNPCC) and others tumors. MutS in E. coli MMR system can specifically recognize mispaired or unpaired base and has been developed into powerful tools for detecting gene mutations and polymorphisms.
出处 《生物化学与生物物理进展》 SCIE CAS CSCD 北大核心 2003年第1期32-37,共6页 Progress In Biochemistry and Biophysics
基金 国家自然科学基金资助项目 ( 30 2 70 30 6 ) 国家"九五"攻关项目 中国科学院"九五"重大项目 (KSCX1 0 6 0 1) .~~
关键词 DNA错配 错配修复机制 MutS蛋白 基因突变 多态性检测 MMR系统 mismatch repair mechanism MutS tumor detecting gene mutations and polymorphisms
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参考文献22

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