Structural comparison of the free and DNA-bound forms of the purine repressor DNA-binding domain.
Structural comparison of the free and DNA-bound forms of the purine repressor DNA-binding domain.
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嘌呤阻遏物 DNA 结合结构域的游离形式和 DNA 结合形式的结构比较。
DOI:
10.1016/s0969-2126(01)00257-x
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发表时间:
1995
期刊:
影响因子:
--
通讯作者:
Brennan,RG
中科院分区:
文献类型:
--
作者:
Nagadoi,A;Morikawa,S;Nakamura,H;Enari,M;Kobayashi,K;Yamamoto,H;Sampei,G;Mizobuchi,K;Schumacher,MA;Brennan,RG
Background:The purine repressor (PurR) regulates genes that encode enzymes for purine biosynthesis. PurR has a two domain structure with an N-terminal DNA-binding domain (DBD) and a C-terminal corepressor-binding domain (CBD). The three-dimensional structure of a ternary complex of PurR bound to both corepressor and a specific DNA sequence has recently been determined by X-ray crystallography.ResultsWe have determined the solution structure of the PurR DBD by NMR. It contains three helices, with the first and second helices forming a helix-turn-helix motif. The tertiary structure of the three helices is very similar to that of the corresponding region in the ternary complex. The structure of the hinge helical region, however, which makes specific base contacts in the minor groove of DNA, is disordered in the DNA-free form.ConclusionThe stable formation of PurR hinge helices requires PurR dimerization, which brings the hinge regions proximal to each other. The dimerization of the hinge helices is likely to be controled by the CBD dimerization interface, but is induced by specific-DNA binding.
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DOI:
10.1111/j.1432-1033.1990.tb15314.x
发表时间:
1990-01-26
期刊:
EUROPEAN JOURNAL OF BIOCHEMISTRY
影响因子:
--
作者:
MENG, LM;KILSTRUP, M;NYGAARD, P
通讯作者:
NYGAARD, P
影响因子:
2.9
作者:
Weiss,MA
通讯作者:
Weiss,MA
DOI:
10.1073/pnas.89.14.6428
发表时间:
1992-07-15
影响因子:
11.1
作者:
OGATA, K;HOJO, H;NISHIMURA, Y
通讯作者:
NISHIMURA, Y
DOI:
10.1073/pnas.79.8.2427
发表时间:
1982
影响因子:
11.1
作者:
B. von Wilcken;B. Müller
通讯作者:
B. Müller
影响因子:
64.8
作者:
PATEL, L;ABATE, C;CURRAN, T
通讯作者:
CURRAN, T