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Roles of UndA and MtrC of Shewanella putrefaciensW3-18-1 in iron reduction
Yang,Yunfeng1; Chen,Jingrong2; Qiu,Dongru2,3; Zhou,Jizhong1,2,4
Source PublicationBMC Microbiology

AbstractBackgroundThe completion of genome sequencing in a number of Shewanella species, which are most renowned for their metal reduction capacity, offers a basis for comparative studies. Previous work in Shewanella oneidensis MR-1 has indicated that some genes within a cluster (mtrBAC-omcA-mtrFED) were involved in iron reduction. To explore new features of iron reduction pathways, we experimentally analyzed Shewanella putrefaciens W3-18-1 since its gene cluster is considerably different from that of MR-1 in that the gene cluster encodes only four ORFs.ResultsAmong the gene cluster, two genes (mtrC and undA) were shown to encode c-type cytochromes. The ΔmtrC deletion mutant revealed significant deficiencies in reducing metals of Fe2O3, α-FeO(OH), β-FeO(OH), ferric citrate, Mn(IV) and Co(III), but not organic compounds. In contrast, no deficiency of metal reduction was observed in the ΔundA deletion mutant. Nonetheless, undA deletion resulted in progressively slower iron reduction in the absence of mtrC and fitness loss under the iron-using condition, which was indicative of a functional role of UndA in iron reduction.ConclusionsThese results provide physiological and biochemical evidences that UndA and MtrC of Shewanella putrefaciens W3-18-1 are involved in iron reduction.

KeywordShewanella putrefaciens W3-18-1 Iron reduction c-type cytochrome
WOS IDBMC:10.1186/1471-2180-13-267
PublisherBioMed Central
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Document Type期刊论文
Corresponding AuthorYang,Yunfeng
Affiliation1.Tsinghua University; State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment
2.University of Oklahoma; Institute for Environmental Genomics and Department of Botany and Microbiology
3.Institute of Hydrobiology, Chinese Academy of Sciences
4.Lawrence Berkeley National Laboratory; Earth Sciences Division
Recommended Citation
GB/T 7714
Yang,Yunfeng,Chen,Jingrong,Qiu,Dongru,et al. Roles of UndA and MtrC of Shewanella putrefaciensW3-18-1 in iron reduction[J]. BMC Microbiology,2013,13(1):8.
APA Yang,Yunfeng,Chen,Jingrong,Qiu,Dongru,&Zhou,Jizhong.(2013).Roles of UndA and MtrC of Shewanella putrefaciensW3-18-1 in iron reduction.BMC Microbiology,13(1),8.
MLA Yang,Yunfeng,et al."Roles of UndA and MtrC of Shewanella putrefaciensW3-18-1 in iron reduction".BMC Microbiology 13.1(2013):8.
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