Structural basis for precursor protein-directed ribosomal peptide macrocyclization.

Structural basis for precursor protein-directed ribosomal peptide macrocyclization.
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前体蛋白引导的核糖体肽大环化的结构基础。

DOI:
10.1038/nchembio.2200
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发表时间:
2016-11
影响因子:
14.8
通讯作者:
Bruner SD
Bruner SD
中科院分区:
生物学1区
文献类型:
--
作者:
Li K;Condurso HL;Li G;Ding Y;Bruner SD

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大环化是天然产物生物合成途径的共同特征,包括核糖体肽的多样性家族。微病毒蛋白是结构复杂的蓝藻核糖体肽,其成员靶向蛋白酶具有有效的可逆抑制作用。产物结构是由三个大环化依次催化的两个成员的ATP-把握家庭,一个独特的策略核糖体肽大环化。在这里,我们描述了铜绿微囊藻的microviridin J途径的酶催化大环化的详细结构基础。大环化酶MdnC和MdnB通过一种新的前体肽识别机制与前体肽的保守α-螺旋相互作用。这些结果提供了对化学关键的独特蛋白质/蛋白质相互作用的深入了解,表明了microviridin肽的天然组合合成的起源,并为未来的工程努力提供了一个框架,以产生设计的化合物。
Macrocyclization is a common feature of natural product biosynthetic pathways including the diverse family of ribosomal peptides. Microviridins are architecturally complex cyanobacterial ribosomal peptides whose members target proteases with potent reversible inhibition. The product structure is constructed by three macrocyclizations catalyzed sequentially by two members of the ATP-grasp family, a unique strategy for ribosomal peptide macrocyclization. Here, we describe the detailed structural basis for the enzyme-catalyzed macrocyclizations in the microviridin J pathway of Microcystis aeruginosa. The macrocyclases, MdnC and MdnB, interact with a conserved α-helix of the precursor peptide using a novel precursor peptide recognition mechanism. The results provide insight into the unique protein/protein interactions key to the chemistry, suggest an origin of the natural combinatorial synthesis of microviridin peptides and provide a framework for future engineering efforts to generate designed compounds.
DOI: 10.1038/nchembio.1499
发表时间: 2014-05
影响因子: 14.8
作者:
Mathavan, Indran;Zirah, Severine;Mehmood, Shahid;Choudhury, Hassanul G.;Goulard, Christophe;Li, Yanyan;Robinson, Carol V.;Rebuffat, Sylvie;Beis, Konstantinos
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影响因子: 14.8
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DOI: 10.1107/s0907444903018043
发表时间: 2003-11-01
期刊: ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY
影响因子: --
作者:
Grosse-Kunstleve, RW;Adams, PD
通讯作者: Adams, PD
DOI: 10.1107/s0907444904019158
发表时间: 2004-12-01
影响因子: 2.2
作者:
Emsley, P;Cowtan, K
通讯作者: Cowtan, K