Structural basis for the regulation of human 5,10-methylenetetrahydrofolate reductase by phosphorylation and S-adenosylmethionine inhibition.
Structural basis for the regulation of human 5,10-methylenetetrahydrofolate reductase by phosphorylation and S-adenosylmethionine inhibition.
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DOI:
10.1038/s41467-018-04735-2
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发表时间:
2018-06-11
影响因子:
16.6
通讯作者:
Yue WW
中科院分区:
文献类型:
--
作者:
Froese DS;Kopec J;Rembeza E;Bezerra GA;Oberholzer AE;Suormala T;Lutz S;Chalk R;Borkowska O;Baumgartner MR;Yue WW
The folate and methionine cycles are crucial for biosynthesis of lipids, nucleotides and proteins, and production of the methyl donor S-adenosylmethionine (SAM). 5,10-methylenetetrahydrofolate reductase (MTHFR) represents a key regulatory connection between these cycles, generating 5-methyltetrahydrofolate for initiation of the methionine cycle, and undergoing allosteric inhibition by its end product SAM. Our 2.5 Å resolution crystal structure of human MTHFR reveals a unique architecture, appending the well-conserved catalytic TIM-barrel to a eukaryote-only SAM-binding domain. The latter domain of novel fold provides the predominant interface for MTHFR homo-dimerization, positioning the N-terminal serine-rich phosphorylation region near the C-terminal SAM-binding domain. This explains how MTHFR phosphorylation, identified on 11 N-terminal residues (16 in total), increases sensitivity to SAM binding and inhibition. Finally, we demonstrate that the 25-amino-acid inter-domain linker enables conformational plasticity and propose it to be a key mediator of SAM regulation. Together, these results provide insight into the molecular regulation of MTHFR. The human enzyme MTHFR links the folate and methionine cycles, which are essential for the biosynthesis of nucleotides and proteins. Here, the authors present the crystal structure and biochemical analysis of human MTHFR, providing molecular insights into its function and regulation in higher eukaryotes.
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DOI:
10.1007/978-1-4939-6887-9_25
发表时间:
2017-01-01
期刊:
HETEROLOGOUS GENE EXPRESSION IN E. COLI: METHODS AND PROTOCOLS
影响因子:
--
作者:
Chalk, Rod
通讯作者:
Chalk, Rod
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH
影响因子:
3.7
作者:
Igari S;Ohtaki A;Yamanaka Y;Sato Y;Yohda M;Odaka M;Noguchi K;Yamada K
通讯作者:
Yamada K
DOI:
10.1126/science.aao3265
发表时间:
2017-11-10
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Gu X;Orozco JM;Saxton RA;Condon KJ;Liu GY;Krawczyk PA;Scaria SM;Harper JW;Gygi SP;Sabatini DM
通讯作者:
Sabatini DM
影响因子:
5.3
作者:
Loehrer, FMT;Tschöpl, M;Haefeli, WE
通讯作者:
Haefeli, WE