YcaO domains use ATP to activate amide backbones during peptide cyclodehydrations.
YcaO domains use ATP to activate amide backbones during peptide cyclodehydrations.
复制标题
DOI:
10.1038/nchembio.944
复制
发表时间:
2012-04-22
影响因子:
14.8
通讯作者:
Mitchell, Douglas A.
中科院分区:
文献类型:
--
作者:
Dunbar, Kyle L.;Melby, Joel O.;Mitchell, Douglas A.
Thiazole/oxazole-modified microcins (TOMMs) encompass a recently defined class of ribosomally synthesized natural products with a diverse set of biological activities. Although TOMM biosynthesis has been investigated for over a decade, the mechanism of heterocycle formation by the synthetase enzymes remains poorly understood. Using substrate analogs and isotopic labeling, we demonstrate that adenosine 5′-triphosphate (ATP) is utilized to directly phosphorylate the peptide amide backbone during TOMM heterocycle formation. Moreover, we present the first experimental evidence that the D-protein component of the heterocycle-forming synthetase (YcaO/DUF181 family member), formerly annotated as a docking/scaffolding protein involved in complex formation and regulation, is able to perform the ATP-dependent cyclodehydration reaction in the absence of the other TOMM biosynthetic proteins. Together, these data provide a greater level of detail into the biosynthesis of azol(in)e heterocycles in ribosomal natural products and prompt a reclassification of the enzymes involved in their installation.
登录
查看更多内容
影响因子:
3.2
作者:
McIntosh, John A.;Schmidt, Eric W.
通讯作者:
Schmidt, Eric W.
影响因子:
15
作者:
Morris, Rowan P.;Leeds, Jennifer A.;Krastel, Philipp
通讯作者:
Krastel, Philipp
影响因子:
56.9
作者:
LEE, JJ;EKKER, SC;BEACHY, PA
通讯作者:
BEACHY, PA
影响因子:
2.9
作者:
Milne, JC;Eliot, AC;Walsh, CT
通讯作者:
Walsh, CT
DOI:
10.1073/pnas.0900008106
发表时间:
2009-02-24
影响因子:
11.1
作者:
Brown, Laura C. Wieland;Acker, Michael G.;Fischbach, Michael A.
通讯作者:
Fischbach, Michael A.