Structural analysis of the diadenylate cyclase reaction of DNA-integrity scanning protein A (DisA) and its inhibition by 3'-dATP.
Structural analysis of the diadenylate cyclase reaction of DNA-integrity scanning protein A (DisA) and its inhibition by 3'-dATP.
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DNA 完整性扫描蛋白 A (DisA) 的二腺苷酸环化酶反应的结构分析及其 3-dATP 的抑制作用
DOI:
10.1042/bj20150373
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Hopfner
中科院分区:
文献类型:
--
作者:
Müller;Deimling;Hopfner
The identification of the essential bacterial second messenger cyclic-di-AMP (c-di-AMP) synthesized by the DNA-integrity scanning protein A (DisA) has opened up a new and emerging field in bacterial signalling. To further analyse the diadenylate cyclase (DAC) reaction catalysed by the DAC domains of DisA, we crystallizedThermotoga maritimaDisA in the presence of different ATP analogues and metal ions to identify the metal-binding site and trap the enzyme in pre- and post-reaction states. Through structural and biochemical assays we identified important residues essential for the reaction in the active site of the DAC domains. Our structures resolve the metal-binding site and thus explain the activation of ATP for the DAC reaction. Moreover, we were able to identify a potent inhibitor of the DAC domain. Based on the available structures and homology to annotated DAC domains we propose a common mechanism for c-di-AMP synthesis by DAC domains in c-di-AMP-producing species and a possible approach for its effective inhibition.
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影响因子:
6.1
作者:
Petoukhov MV;Franke D;Shkumatov AV;Tria G;Kikhney AG;Gajda M;Gorba C;Mertens HD;Konarev PV;Svergun DI
通讯作者:
Svergun DI
影响因子:
4.8
作者:
Mehne, Felix M. P.;Gunka, Katrin;Stuelke, Joerg
通讯作者:
Stuelke, Joerg
影响因子:
3.2
作者:
Bai, Yinlan;Yang, Jun;Bai, Guangchun
通讯作者:
Bai, Guangchun
影响因子:
3.5
作者:
Mueller, Martina;Hopfner, Karl-Peter;Witte, Gregor
通讯作者:
Witte, Gregor
影响因子:
4.8
作者:
Gundlach, Jan;Dickmanns, Achim;Ficner, Ralf
通讯作者:
Ficner, Ralf