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Extracytoplasmatic processes impaired by inactivation of the trxA (thioredoxin gene) in Bacillus subtilis

Författare

Summary, in English

The trxA gene is regarded as essential in Bacillus subtilis, but the roles of the TrxA protein in this gram-positive bacterium are largely unknown. Inactivation of trxA results in deoxyribonucleoside and cysteine or methionine auxotrophy. This phenotype is expected if the TrxA protein is important for the activity of the class Ib ribonucleotide reductase and adenosine-5'-phosphosulfate/3'-phosphoadenosine-5'-phosphosulfate reductase. We demonstrate here that a TrxA deficiency in addition causes defects in endospore and cytochrome c synthesis. These effects were suppressed by BdbD deficiency, indicating that TrxA in the cytoplasm is the primary electron donor to several different thiol-disulfide oxidoreductases active on the outer side of the B. subtilis cytoplasmic membrane.

Publiceringsår

2008

Språk

Engelska

Sidor

4660-4665

Publikation/Tidskrift/Serie

Journal of Bacteriology

Volym

190

Issue

13

Dokumenttyp

Artikel i tidskrift

Förlag

American Society for Microbiology

Ämne

  • Microbiology
  • Biochemistry and Molecular Biology

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0021-9193