Molecular basis for acetyl-CoA production by ATP-citrate lyase.
Molecular basis for acetyl-CoA production by ATP-citrate lyase.
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ATP-柠檬酸裂合酶产生乙酰辅酶A的分子基础。
DOI:
10.1038/s41594-019-0351-6
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发表时间:
2020-01
影响因子:
16.8
通讯作者:
Marmorstein R
中科院分区:
文献类型:
--
作者:
Wei X;Schultz K;Bazilevsky GA;Vogt A;Marmorstein R
ATP-citrate lyase (ACLY) synthesizes cytosolic acetyl-CoA, a fundamental cellular building block. Accordingly, aberrant ACLY activity is observed in many diseases. Here we report cryo-EM structures of human ACLY alone or bound to substrates or products. ACLY forms a homotetramer with a rigid citrate synthase homology (CSH) module, flanked by four flexible actyl-CoA synthetase homology (ASH) domains; CoA is bound at the CSH-ASH interface in mutually exclusive productive or unproductive conformations. The structure of a catalytic mutant of ACLY in the presence of ATP, citrate and CoA substrates reveals a phospho-citryl-CoA intermediate in the ASH domain. ACLY with acetyl-CoA and oxaloacetate (OAA) products shows the products bound in the ASH domain, with an additional OAA in the CSH domain, which could function in ACLY autoinhibition. These structures, which are supported by biochemical and biophysical data, challenge previous proposals of the ACLY catalytic mechanism and suggest additional therapeutic possibilities for ACLY-associated metabolic disorders.
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影响因子:
48
作者:
Kucukelbir, Alp;Sigworth, Fred J.;Tagare, Hemant D.
通讯作者:
Tagare, Hemant D.
影响因子:
16.6
作者:
Pinkosky, Stephen L.;Newton, Roger S.;Day, Emily A.;Ford, Rebecca J.;Lhotak, Sarka;Austin, Richard C.;Birch, Carolyn M.;Smith, Brennan K.;Filippov, Sergey;Groot, Pieter H. E.;Steinberg, Gregory R.;Lalwani, Narendra D.
通讯作者:
Lalwani, Narendra D.
影响因子:
4.4
作者:
Bond, DR;Mester, T;Lovley, DR
通讯作者:
Lovley, DR
影响因子:
2.7
作者:
INOUE, H;TSUNEMI, T;TAKEDA, Y
通讯作者:
TAKEDA, Y
影响因子:
2.7
作者:
INOUE, H;SUZUKI, F;TAKEDA, Y
通讯作者:
TAKEDA, Y