Pseudomonas syringae self-protection from tabtoxinine-β-lactam by ligase TblF and acetylase Ttr.
Pseudomonas syringae self-protection from tabtoxinine-β-lactam by ligase TblF and acetylase Ttr.
复制标题
丁香假单胞菌通过连接酶 TblF 和乙酰化酶 Ttr 进行自我保护,免受 tabtoxinine-β-内酰胺的影响。
DOI:
10.1021/bi3011384
复制
发表时间:
2012
期刊:
影响因子:
2.9
通讯作者:
Walsh,ChristopherT
中科院分区:
文献类型:
--
作者:
Wencewicz,TimothyA;Walsh,ChristopherT
Plant pathogenicPseudomonas syringaeproduce the hydroxy-β-lactam antimetabolite tabtoxinine-β-lactam (TβL) as a time-dependent inactivating glutamine analogue of plant glutamine synthetases. The producing pseudomonads use multiple modes of self-protection, two of which are characterized in this study. The first is the dipeptide ligase TblF which converts tabtoxinine-β-lactam to the TβL-Thr dipeptide known as tabtoxin. The dipeptide is not recognized by glutamine synthetase. This represents a Trojan Horse strategy: the dipeptide is secreted, taken up by dipeptide permeases in neighboring cells, and TβL is released by peptidase action. The second self-protection mode is elaboration by the acetyltransferase Ttr, which acetylates the α-amino group of the proximal inactivator TβL, but not the tabtoxin dipeptide.
登录
查看更多内容
影响因子:
56.9
作者:
F. A. Wolf;A. C. Foster
通讯作者:
A. C. Foster
影响因子:
1.5
作者:
Michael D. Thomas;R. Durbin
通讯作者:
R. Durbin
影响因子:
3.9
作者:
D. Harzallah;L. Larous
通讯作者:
L. Larous
影响因子:
1.8
作者:
R. Moore;W. Niemczura;O. Kwok;S. Patil
通讯作者:
S. Patil
影响因子:
14.9
作者:
Hiroyuki Anzai;K. Yoneyama;Isamu Yamaguchi
通讯作者:
Isamu Yamaguchi