Two are better than one

被引:21
|
作者
Halford, SE [1 ]
Gowers, DM [1 ]
Sessions, RB [1 ]
机构
[1] Univ Bristol, Sch Med Sci, Dept Biochem, Bristol BS8 4DL, Avon, England
关键词
D O I
10.1038/78911
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
A crystal structure of a tetrameric restriction enzyme, NgoMIV, bound to two DNA duplexes has been determined. Two subunits contact each duplex in much the same manner as a dimeric restriction enzyme recognizing a single site, but the dimeric units are packed back-to-back, placing the duplexes on opposite sides of the tetramer. Interaction with two recognition sites, presumably via looping, enhances NgoMIV activity.
引用
收藏
页码:705 / 707
页数:3
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