ArticleApplied and environmental microbiology2009
Anaerobic respiration of elemental sulfur and thiosulfate by Shewanella oneidensis MR-1 requires psrA, a homolog of the phsA gene of Salmonella enterica serovar typhimurium LT2.
Article in Applied and environmental microbiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.
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51 citing papers in PubMed, 137 citations in OpenAlex.
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- The genetic repertoire underlying electrogenic sulphur oxidation in cable bacteria.BMC genomics · 2026Article
- Demonstration of the Role of Both a Ttr and a Psr Homologue Enzymes in the Respiration of Tetrathionate by an Environmental Bacterium Shewanella sp. ANA-3.Environmental microbiology · 2026Article
- Sulfur disproportionation occurs globally across anoxic habitats and has multiple mechanisms of independent evolutionary origin.The ISME journal · 2026Review
- Higher levels of antibiotic resistance are less competitive: the hidden ecological cost of no-metabolic cost resistance.bioRxiv : the preprint server for biology · 2025Article
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- Ultrahigh-resolution imaging of biogenic phosphorus and molybdenum in palaeoproterozoic gunflint microfossils.Scientific reports · 2024Article
- Oxygen-selective regulation of cyclic di-GMP synthesis by a globin coupled sensor with a shortened linking domain modulates Shewanella sp. ANA-3 biofilm.Journal of inorganic biochemistry · 2024Article
- A novel bacterial sulfite dehydrogenase that requires threeApplied and environmental microbiology · 2023Article
- Microbial communities related to the sulfur cycle in the Sansha Yongle Blue Hole.Microbiology spectrum · 2023Article
- Microbe-driven elemental cycling enables microbial adaptation to deep-sea ferromanganese nodule sediment fields.Microbiome · 2023Article
- Genomic Analysis of the Deep-Sea BacteriumMicroorganisms · 2023Article
- Generation and Physiology of Hydrogen Sulfide and Reactive Sulfur Species in Bacteria.Antioxidants (Basel, Switzerland) · 2022Review
- A deep-sea sulfate-reducing bacterium generates zero-valent sulfur via metabolizing thiosulfate.mLife · 2022Article
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- Metagenomic analysis of microbial community structure and function in a improved biofilter with odorous gases.Scientific reports · 2022Article
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Shewanella oneidensis MR-1, a facultatively anaerobic gammaproteobacterium, respires a variety of anaerobic terminal electron acceptors, including the inorganic sulfur compounds sulfite (SO3(2-)), thiosulfate (S2O3(2-)), tetrathionate (S4O6(2-)), and elemental sulfur (S(0)). The molecular mechanism of anaerobic respiration of inorganic sulfur compounds by S. oneidensis, however, is poorly understood. In the present study, we identified a three-gene cluster in the S. oneidensis genome whose translated products displayed 59 to 73% amino acid similarity to the products of phsABC, a gene cluster required for S(0) and S2O3(2-) respiration by Salmonella enterica serovar Typhimurium LT2. Homologs of phsA (annotated as psrA) were identified in the genomes of Shewanella strains that reduce S(0) and S2O3(2-) yet were missing from the genomes of Shewanella strains unable to reduce these electron acceptors. A new suicide vector was constructed and used to generate a markerless, in-frame deletion of psrA, the gene encoding the putative thiosulfate reductase. The psrA deletion mutant (PSRA1) retained expression of downstream genes psrB and psrC but was unable to respire S(0) or S2O3(2-) as the terminal electron acceptor. Based on these results, we postulate that PsrA functions as the main subunit of the S. oneidensis S2O3(2-) terminal reductase whose end products (sulfide [HS-] or SO3(2-)) participate in an intraspecies sulfur cycle that drives S(0) respiration.
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