Biosynthesis of the nosiheptide indole side ring centers on a cryptic carrier protein NosJ.
Biosynthesis of the nosiheptide indole side ring centers on a cryptic carrier protein NosJ.
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那西肽吲哚侧环的生物合成以神秘的载体蛋白 NosJ 为中心。
DOI:
10.1038/s41467-017-00439-1
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发表时间:
2017-09-05
影响因子:
16.6
通讯作者:
Zhang Q
中科院分区:
文献类型:
--
作者:
Ding W;Ji W;Wu Y;Wu R;Liu WQ;Mo T;Zhao J;Ma X;Zhang W;Xu P;Deng Z;Tang B;Yu Y;Zhang Q
Nosiheptide is a prototypal thiopeptide antibiotic, containing an indole side ring in addition to its thiopeptide-characteristic macrocylic scaffold. This indole ring is derived from 3-methyl-2-indolic acid (MIA), a product of the radical S-adenosylmethionine enzyme NosL, but how MIA is incorporated into nosiheptide biosynthesis remains to be investigated. Here we report functional dissection of a series of enzymes involved in nosiheptide biosynthesis. We show NosI activates MIA and transfers it to the phosphopantetheinyl arm of a carrier protein NosJ. NosN then acts on the NosJ-bound MIA and installs a methyl group on the indole C4, and the resulting dimethylindolyl moiety is released from NosJ by a hydrolase-like enzyme NosK. Surface plasmon resonance analysis show that the molecular complex of NosJ with NosN is much more stable than those with other enzymes, revealing an elegant biosynthetic strategy in which the reaction flux is controlled by protein–protein interactions with different binding affinities. Thiopeptides such as nosiheptide are clinically-interesting antimicrobial natural products. Here the authors show the functional dissection of a series of enzymes involved in nosiheptide biosynthesis, revealing a unique biosynthetic pathway that centers on a previously-unknown carrier protein.
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影响因子:
15
作者:
Bhandari, Dhananjay M.;Fedoseyenko, Dmytro;Begley, Tadhg P.
通讯作者:
Begley, Tadhg P.
DOI:
10.1016/j.bbapap.2015.04.015
发表时间:
2015-08
影响因子:
3.2
作者:
Gerlt, John A.;Bouvier, Jason T.;Davidson, Daniel B.;Imker, Heidi J.;Sadkhin, Boris;Slater, David R.;Whalen, Katie L.
通讯作者:
Whalen, Katie L.
DOI:
10.1073/pnas.1008608107
发表时间:
2010-09-14
影响因子:
11.1
作者:
Claesen, Jan;Bibb, Mervyn
通讯作者:
Bibb, Mervyn
影响因子:
16.6
作者:
Ji, Xinjian;Li, Yongzhen;Zhang, Qi
通讯作者:
Zhang, Qi
影响因子:
16.6
作者:
Ji, Xinjian;Li, Yongzhen;Zhang, Qi
通讯作者:
Zhang, Qi