Crystal and EM structures of human phosphoribosyl pyrophosphate synthase I (PRS1) provide novel insights into the disease-associated mutations.
Crystal and EM structures of human phosphoribosyl pyrophosphate synthase I (PRS1) provide novel insights into the disease-associated mutations.
复制标题
人磷酸核糖焦磷酸合酶 I (PRS1) 的晶体和电镜结构为疾病相关突变提供了新的见解。
DOI:
10.1371/journal.pone.0120304
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发表时间:
2015
期刊:
影响因子:
3.7
通讯作者:
Li X
中科院分区:
文献类型:
--
作者:
Chen P;Liu Z;Wang X;Peng J;Sun Q;Li J;Wang M;Niu L;Zhang Z;Cai G;Teng M;Li X
Human PRS1, which is indispensable for the biosynthesis of nucleotides, deoxynucleotides and their derivatives, is associated directly with multiple human diseases because of single base mutation. However, a molecular understanding of the effect of these mutations is hampered by the lack of understanding of its catalytic mechanism. Here, we reconstruct the 3D EM structure of the PRS1 apo state. Together with the native stain EM structures of AMPNPP, AMPNPP and R5P, ADP and the apo states with distinct conformations, we suggest the hexamer is the enzymatically active form. Based on crystal structures, sequence analysis, mutagenesis, enzyme kinetics assays, and MD simulations, we reveal the conserved substrates binding motifs and make further analysis of all pathogenic mutants.
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影响因子:
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作者:
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通讯作者:
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影响因子:
9.8
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Ludtke, Steven J.
DOI:
10.1016/j.biocel.2003.08.014
发表时间:
2004-03-01
影响因子:
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作者:
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通讯作者:
Christopherson, RI