AcsD catalyzes enantioselective citrate desymmetrization in siderophore biosynthesis.

AcsD catalyzes enantioselective citrate desymmetrization in siderophore biosynthesis.
复制标题

DOI:
10.1038/nchembio.145
复制
发表时间:
2009-03
影响因子:
14.8
通讯作者:
Naismith, James H.
Naismith, James H.
中科院分区:
生物学1区
文献类型:
--
作者:
Schmelz, Stefan;Kadi, Nadia;McMahon, Stephen A.;Song, Lijiang;Oves-Costales, Daniel;Oke, Muse;Liu, Huanting;Johnson, Kenneth A.;Carter, Lester G.;Botting, Catherine H.;White, Malcolm F.;Challis, Gregory L.;Naismith, James H.

文献摘要

参考文献

被引文献

相似文献

在感染过程中,细菌病原体需要从宿主体内清除铁元素以促进生长和增殖。它们进化出了几种策略来做到这一点,其中一种是生物合成和排泄被称为铁载体的小的、高亲和力的铁螯合剂。铁载体的生物合成是一个重要的研究领域,不仅具有潜在的治疗干预作用,而且还阐明了新的酶化学。铁载体生物合成存在两种一般途径:特征明确的非核糖体肽合成酶(NRPS)依赖途径和NRPS独立(NIS)途径,后者依赖于不同的合成酶家族,但研究较少。本文报道了菊花乳杆菌(原Erwinia) AcsD的结构和生化研究,这是一种参与色素移动蛋白生物合成的NIS合成酶。ATP和柠檬酸盐复合物的结构为酶结合(3R)-柠檬酸腺苷酸的立体特异性形成提供了机制基础,该酶结合(3R)-柠檬酸腺苷酸与l-丝氨酸反应形成可能的消色动蛋白前体。AcsD是一种新型的酰基腺苷酸形成酶,具有新的折叠和化学催化策略。
Bacterial pathogens need to scavenge iron from their host for growth and proliferation during infection. They have evolved several strategies to do this, one being the biosynthesis and excretion of small, high-affinity iron chelators known as siderophores. The biosynthesis of siderophores is an important area of study, not only for potential therapeutic intervention, but also to illuminate new enzyme chemistries. Two general pathways for siderophore biosynthesis exist: the well-characterized nonribosomal peptide synthetase (NRPS)-dependent pathway and the NRPS-independent (NIS) pathway, which relies on a different family of sparsely-investigated synthetases. Here, we report structural and biochemical studies of AcsD from Pectobacterium (formerly Erwinia) chrysanthemi, a NIS synthetase involved in achromobactin biosynthesis. The structures of ATP and citrate complexes provide a mechanistic rationale for stereospecific formation of an enzyme-bound (3R)-citryl-adenylate, which reacts with L-serine to form a likely achromobactin precursor. AcsD is a novel acyl adenylate-forming enzyme with a new fold and chemical catalysis strategy.
DOI: 10.1074/jbc.m602109200
发表时间: 2006-07-28
影响因子: 4.8
作者:
Ginder, Nathaniel D.;Binkowski, Daniel J.;Honzatko, Richard B.
通讯作者: Honzatko, Richard B.
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
DOI: 10.1021/bi035911a
发表时间: 2004-02-17
期刊: BIOCHEMISTRY
影响因子: 2.9
作者:
Jogl, G;Tong, L
通讯作者: Tong, L
DOI: 10.1021/ja00089a001
发表时间: 1994-05-18
影响因子: 15
作者:
LIU, CF;TAM, JP
通讯作者: TAM, JP
DOI: 10.1046/j.1365-2958.2003.03861.x
发表时间: 2004-01-01
影响因子: 3.6
作者:
Cendrowski, S;MacArthur, W;Hanna, P
通讯作者: Hanna, P