Membrane association of SadC enhances its diguanylate cyclase activity to control exopolysaccharides synthesis and biofilm formation in Pseudomonas aeruginosa.
Membrane association of SadC enhances its diguanylate cyclase activity to control exopolysaccharides synthesis and biofilm formation in Pseudomonas aeruginosa.
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SadC 的膜结合增强其二鸟苷酸环化酶活性,以控制铜绿假单胞菌的胞外多糖合成和生物膜形成。
DOI:
10.1111/1462-2920.13263
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发表时间:
2016-10
期刊:
影响因子:
--
通讯作者:
Luyan Ma
中科院分区:
文献类型:
--
作者:
Bin Zhu;Cuilan Liu;Shiheng Liu;Hengjiang Cong;Lichuan Gu;Luyan Ma
Cyclic diguanosine monophosphate (c-di-GMP) is one of the most important bacterial second messengers that controls many bacterial cellular functions including lifestyle switch between plankton and biofilm. Surface attachment defective (SadC) is a diguanylate cyclase (DGC) involved in the biosynthesis of c-di-GMP in Pseudomonas aeruginosa, an opportunistic pathogen that can cause diverse infections. Here we report the crystal structure of GGDEF domain from SadC and the critical role of the trans-membrane (TM) domain of SadC with regard to biofilm formation, exopolysaccharide production and motility. We showed that over-expression of SadC in P. aeruginosa PAO1 totally inhibited swimming motility and significantly enhanced the production of exopolysaccharide Psl. SadC lacking TM domains (SadC300-487 ) could not localize on cytoplasmic membrane and form cluster, lost the ability to inhibit the swimming and twitching motility, and showed the attenuated activity to promote Psl production despite that SadC300-487 was able to catalyze the synthesize of c-di-GMP in vitro and in vivo. The GGDEF domain of SadC has a typical GGDEF structure and the α-helix connected the TM domains with SadC GGDEF domain is essential for SadC to form DGC oligomers. Our data imply that membrane association of SadC promotes its DGC activity by affecting the formation of active DGC oligomers.
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影响因子:
16
作者:
Paul K;Nieto V;Carlquist WC;Blair DF;Harshey RM
通讯作者:
Harshey RM
DOI:
10.1107/s1744309113011937
发表时间:
2013-06
期刊:
Acta crystallographica. Section F, Structural biology and crystallization communications
影响因子:
--
作者:
Yanjie Hou;De-Feng Li;Da Cheng Wang
通讯作者:
Yanjie Hou;De-Feng Li;Da Cheng Wang
DOI:
10.1073/pnas.89.11.4884
发表时间:
1992-06-01
影响因子:
11.1
作者:
WEBB, MR
通讯作者:
WEBB, MR
影响因子:
3.1
作者:
Arora, SK;Ritchings, BW;Ramphal, R
通讯作者:
Ramphal, R
影响因子:
1.5
作者:
Perrine Vasseur;Isabelle Vallet-Gely;Chantal Soscia;S. Genin;A. Filloux
通讯作者:
Perrine Vasseur;Isabelle Vallet-Gely;Chantal Soscia;S. Genin;A. Filloux