Structure-Function Analysis of the Extended Conformation of a Polyketide Synthase Module.
Structure-Function Analysis of the Extended Conformation of a Polyketide Synthase Module.
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聚酮化合物合酶模块扩展构象的结构 - 功能分析。
DOI:
10.1021/jacs.8b02100
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发表时间:
2018-05-30
影响因子:
15
通讯作者:
Khosla C
中科院分区:
文献类型:
--
作者:
Li X;Sevillano N;La Greca F;Deis L;Liu YC;Deller MC;Mathews II;Matsui T;Cane DE;Craik CS;Khosla C
Catalytic modules of assembly-line polyketide synthases (PKSs) have previously been observed in two very different conformations—an “extended” architecture and an “arch-shaped” architecture—although the catalytic relevance of neither has been directly established. By the use of a fully human naïve antigen-binding fragmenẗ (Fab) library, a high-affinity antibody was identified that bound to the extended conformation of a PKS module, as verified by X-ray crystallography and tandem size-exclusion chromatography–small-angle X-ray scattering (SEC–SAXS). Kinetic analysis proved that this antibody-stabilized module conformation was fully competent for catalysis of intermodular polyketide chain translocation as well as intramodular polyketide chain elongation and functional group modification of a growing polyketide chain. Thus, the extended conformation of a PKS module is fully competent for all of its essential catalytic functions.
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影响因子:
5.6
作者:
Edwards AL;Matsui T;Weiss TM;Khosla C
通讯作者:
Khosla C
影响因子:
56.9
作者:
Maier, Timm;Leibundgut, Marc;Ban, Nenad
通讯作者:
Ban, Nenad
影响因子:
--
作者:
Tang, Yinyan;Chen, Alice Y.;Khosla, Chaitan
通讯作者:
Khosla, Chaitan
DOI:
10.1073/pnas.0601924103
发表时间:
2006-07-25
影响因子:
11.1
作者:
Tang, Yinyan;Kim, Chu-Young;Khosla, Chaitan
通讯作者:
Khosla, Chaitan
影响因子:
2.9
作者:
Wu, N;Cane, DE;Khosla, C
通讯作者:
Khosla, C