The cyclic dinucleotide c-di-AMP is an allosteric regulator of metabolic enzyme function.
The cyclic dinucleotide c-di-AMP is an allosteric regulator of metabolic enzyme function.
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DOI:
10.1016/j.cell.2014.07.046
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发表时间:
2014-09-11
期刊:
影响因子:
64.5
通讯作者:
Woodward JJ
中科院分区:
文献类型:
--
作者:
Sureka K;Choi PH;Precit M;Delince M;Pensinger DA;Huynh TN;Jurado AR;Goo YA;Sadilek M;Iavarone AT;Sauer JD;Tong L;Woodward JJ
Cyclic di-adenosine monophosphate (c-di-AMP) is a broadly conserved second messenger required for bacterial growth and infection. However, the molecular mechanisms of c-di-AMP signaling are still poorly understood. Using a chemical proteomics screen for c-di-AMP interacting proteins in the pathogen Listeria monocytogenes, we identified several broadly conserved protein receptors, including the central metabolic enzyme pyruvate carboxylase (LmPC). Biochemical and crystallographic studies of the LmPC-c-di-AMP interaction revealed a previously unrecognized allosteric regulatory site 25 Å from the active site. Mutations in this site disrupted c-di-AMP binding and affected enzyme catalysis of LmPC as well as PC from pathogenic Enterococcus faecalis. C-di-AMP depletion resulted in altered metabolic activity in L. monocytogenes. Correction of this metabolic imbalance rescued bacterial growth, reduced bacterial lysis, and resulted in enhanced bacterial burdens during infection. These findings greatly expand the c-di-AMP signaling repertoire and reveal a central metabolic regulatory role for a cyclic di-nucleotide.
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影响因子:
16.8
作者:
Huang, Yi-He;Liu, Xiang-Yu;Su, Xiao-Dong
通讯作者:
Su, Xiao-Dong
影响因子:
4.4
作者:
Cotter, PD;Ryan, S;Hill, C
通讯作者:
Hill, C
影响因子:
2.1
作者:
BOOTH, IR;HIGGINS, CF
通讯作者:
HIGGINS, CF
DOI:
10.1042/bj20080709
发表时间:
2008-08-01
期刊:
The Biochemical journal
影响因子:
--
作者:
Jitrapakdee S;St Maurice M;Rayment I;Cleland WW;Wallace JC;Attwood PV
通讯作者:
Attwood PV
影响因子:
3.1
作者:
JONES, S;PORTNOY, DA
通讯作者:
PORTNOY, DA