The Distinctive Regulation of Cyanobacterial Glutamine Synthetase.
The Distinctive Regulation of Cyanobacterial Glutamine Synthetase.
复制标题
DOI:
10.3390/life8040052
复制
发表时间:
2018-10-27
期刊:
影响因子:
--
通讯作者:
Klähn S
中科院分区:
文献类型:
--
作者:
Bolay P;Muro-Pastor MI;Florencio FJ;Klähn S
Glutamine synthetase (GS) features prominently in bacterial nitrogen assimilation as it catalyzes the entry of bioavailable nitrogen in form of ammonium into cellular metabolism. The classic example, the comprehensively characterized GS of enterobacteria, is subject to exquisite regulation at multiple levels, among them gene expression regulation to control GS abundance, as well as feedback inhibition and covalent modifications to control enzyme activity. Intriguingly, the GS of the ecologically important clade of cyanobacteria features fundamentally different regulatory systems to those of most prokaryotes. These include the interaction with small proteins, the so-called inactivating factors (IFs) that inhibit GS linearly with their abundance. In addition to this protein interaction-based regulation of GS activity, cyanobacteria use alternative elements to control the synthesis of GS and IFs at the transcriptional level. Moreover, cyanobacteria evolved unique RNA-based regulatory mechanisms such as glutamine riboswitches to tightly tune IF abundance. In this review, we aim to outline the current knowledge on the distinctive features of the cyanobacterial GS encompassing the overall control of its activity, sensing the nitrogen status, transcriptional and post-transcriptional regulation, as well as strain-specific differences.
登录
查看更多内容
影响因子:
5.2
作者:
Domínguez-Martín MA;Díez J;García-Fernández JM
通讯作者:
García-Fernández JM
DOI:
10.1073/pnas.1404097111
发表时间:
2014-06-10
影响因子:
11.1
作者:
Espinosa, Javier;Rodriguez-Mateos, Francisco;Contreras, Asuncion
通讯作者:
Contreras, Asuncion
DOI:
10.1073/pnas.68.12.2949
发表时间:
1971-01-01
影响因子:
11.1
作者:
BROWN, MS;SEGAL, A;STADTMAN, ER
通讯作者:
STADTMAN, ER
影响因子:
5.4
作者:
Dambach, Michael D.;Winkler, Wade C.
通讯作者:
Winkler, Wade C.
影响因子:
12.3
作者:
Dufresne A;Garczarek L;Partensky F
通讯作者:
Partensky F