Solution structure of the helicase-interaction domain of the primase DnaG: a model for helicase activation.
Solution structure of the helicase-interaction domain of the primase DnaG: a model for helicase activation.
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DOI:
10.1016/j.str.2005.01.022
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发表时间:
2005-04
期刊:
影响因子:
--
通讯作者:
Waltho JP
中科院分区:
文献类型:
--
作者:
Syson K;Thirlway J;Hounslow AM;Soultanas P;Waltho JP
The helicase-primase interaction is a critical event in DNA replication and is mediated by a putative helicase-interaction domain within the primase. The solution structure of the helicase-interaction domain of DnaG reveals that it is made up of two independent subdomains: an N-terminal six-helix module and a C-terminal two-helix module that contains the residues of the primase previously identified as important in the interaction with the helicase. We show that the two-helix module alone is sufficient for strong binding between the primase and the helicase but fails to activate the helicase; both subdomains are required for helicase activation. The six-helix module of the primase has only one close structural homolog, the N-terminal domain of the corresponding helicase. This surprising structural relationship, coupled with the differences in surface properties of the two molecules, suggests how the helicase-interaction domain may perturb the structure of the helicase and lead to activation.
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DOI:
10.1038/90415
发表时间:
2001-08-01
期刊:
NATURE STRUCTURAL BIOLOGY
影响因子:
--
作者:
Thaw, P;Baxter, NJ;Craven, CJ
通讯作者:
Craven, CJ
影响因子:
5.7
作者:
Pan, H;Wigley, DB
通讯作者:
Wigley, DB
影响因子:
64.5
作者:
Yuzhakov, A;Kelman, Z;O'Donnell, M
通讯作者:
O'Donnell, M
影响因子:
5.6
作者:
Haroniti, A;Anderson, C;Soultanas, P
通讯作者:
Soultanas, P
DOI:
10.1107/s0907444998003254
发表时间:
1998-09-01
期刊:
ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY
影响因子:
--
作者:
Brunger, AT;Adams, PD;Warren, GL
通讯作者:
Warren, GL