Molecular Basis for Autocatalytic Backbone N-Methylation in RiPP Natural Product Biosynthesis.
Molecular Basis for Autocatalytic Backbone N-Methylation in RiPP Natural Product Biosynthesis.
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DOI:
10.1021/acschembio.8b00668
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发表时间:
2018-10-19
影响因子:
4
通讯作者:
Nair SK
中科院分区:
文献类型:
--
作者:
Ongpipattanakul C;Nair SK
N-Methylation of nucleic acids, proteins and peptides is a chemical modification with significant impact on biological regulation. Despite the simplicity of the structural change, N-methylation can influence diverse functions including epigenetics, protein complex formation, and microtubule stability. While there are limited examples of N-methylation of the α-amino group of bacterial and eukaryotic proteins, there are no examples of catalysts that carry out the post-translation methylation of backbone amides in proteins or peptides. Recent studies have identified enzymes that catalyze backbone N-methylation on a peptide substrate, a reaction with little biochemical precedent, in a family of ribosomally synthesized natural products produced in basidiomycetes. Here, we describe the crystal structures of Dendrothele bispora dbOphMA, a methyltransferase that catalyzes multiple N-methylations on the peptide backbone. We further carry out biochemical studies of this catalyst to determine the molecular details that promote this unusual chemical transformation. The structural and biochemical framework described here could facilitate biotechnological applications of catalysts for the rapid production of backbone N-methylated peptides.
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影响因子:
3.9
作者:
Edwards JR;Yarychkivska O;Boulard M;Bestor TH
通讯作者:
Bestor TH
DOI:
10.1016/j.bbapap.2015.04.015
发表时间:
2015-08
影响因子:
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Whalen, Katie L.
DOI:
10.1073/pnas.1620499114
发表时间:
2017-06-20
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Nair, Satish K.
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作者:
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通讯作者:
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