Absence of Protoheme IX Farnesyltransferase CtaB Causes Virulence Attenuation but Enhances Pigment Production and Persister Survival in MRSA.
Absence of Protoheme IX Farnesyltransferase CtaB Causes Virulence Attenuation but Enhances Pigment Production and Persister Survival in MRSA.
复制标题
原血红素 IX 法呢基转移酶 CtaB 的缺失会导致 MRSA 毒力减弱,但会增强色素产生并保持存活
DOI:
10.3389/fmicb.2016.01625
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发表时间:
2016
影响因子:
5.2
通讯作者:
Zhang Y
中科院分区:
文献类型:
--
作者:
Xu T;Han J;Zhang J;Chen J;Wu N;Zhang W;Zhang Y
The membrane protein CtaB in S. aureus is a protoheme IX farnesyltransferase involved in the synthesis of the heme containing terminal oxidases of bacterial respiratory chain. In this study, to assess the role of CtaB in S. aureus virulence, pigment production, and persister formation, we constructed a ctaB mutant in the methicillin-resistant Staphylococcus aureus (MRSA) strain USA500. We found that deletion of ctaB attenuated growth and virulence in mice but enhanced pigment production and formation of quinolone tolerant persister cells in stationary phase. RNA-seq analysis showed that deletion of ctaB caused decreased transcription of several virulence genes including RNAIII which is consistent with its virulence attenuation. In addition, transcription of 20 ribosomal genes and 24 genes involved in amino acid biosynthesis was significantly down-regulated in the ctaB knockout mutant compared with the parent strain. These findings suggest the importance of heme biosynthesis in virulence and persister formation of S. aureus.
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影响因子:
6.4
作者:
Hammer ND;Schurig-Briccio LA;Gerdes SY;Gennis RB;Skaar EP
通讯作者:
Skaar EP
影响因子:
3.5
作者:
Atshan, Salman Sahab;Shamsudin, Mariana Nor;Ghaznavi-Rad, Ehsanollah
通讯作者:
Ghaznavi-Rad, Ehsanollah
影响因子:
3.6
作者:
Coulter, SN;Schwan, WR;Stover, CK
通讯作者:
Stover, CK
影响因子:
16
作者:
Germain, Elsa;Castro-Roa, Daniel;Gerdes, Kenn
通讯作者:
Gerdes, Kenn
影响因子:
3.7
作者:
Han J;He L;Shi W;Xu X;Wang S;Zhang S;Zhang Y
通讯作者:
Zhang Y