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Hydrogen peroxide production in Streptococcus pyogenes: involvement of lactate oxidase and coupling with aerobic utilization of lactate.
Streptococcus pyogenes strains can be divided into two classes, one capable and the other incapable of producing H2O2 (M. Saito, S. Ohga, M. Endoh, H. Nakayama, Y. Mizunoe, T. Hara, and S. Yoshida,Expand
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Concerted action of lactate oxidase and pyruvate oxidase in aerobic growth of Streptococcus pneumoniae: role of lactate as an energy source.
Streptococcus pneumoniae was shown to possess lactate oxidase in addition to well-documented pyruvate oxidase. The activities of both H(2)O(2)-forming oxidases in wild-type cultures were detectableExpand
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Isolation and genetic characterization of a thymineless death-resistant mutant of Escherichia coli K12: Identification of a new mutation (recQ1) that blocks the RecF recombination pathway
SummaryAn Escherichia coli K12 mutant resistant to thymineless death (TLD) was isolated, and its genetic analysis led us to identify a new mutation (recQ1) located between corA and metE on theExpand
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Escherichia coli RecQ protein is a DNA helicase.
The Escherichia coli recQ gene, a member of the RecF recombination gene family, was set in an overexpression plasmid, and its product was purified to near-homogeneity. The purified RecQ proteinExpand
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The recQ gene of Escherichia coli K12: molecular cloning and isolation of insertion mutants
SummaryThe recQ gene of Escherichia coli K12 was subcloned from plasmid pKO1 (Oeda et al. 1981) by monitoring the capacity of the resulting recombinant plasmids partially to reverse the increasedExpand
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Thymine starvation-induced structural changes in Escherichia coli DNA. Detection by pulsed field gel electrophoresis and evidence for involvement of homologous recombination.
Effect of thymine starvation on Escherichia coli DNA was investigated by using pulsed field gel electrophoresis combined with cell lysis in agarose gel. Post-lysis treatment with restriction enzymesExpand
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Recombination-deficient mutations and thymineless death in Escherichia coli K12: reciprocal effects of recBC and recF and indifference of recA mutations.
In an approach to characterizing the nature of the lethal event in thymineless death (TLD), rec mutants of Escherichia coli K12 were examined for their sensitivity to TLD. The recB21 and recC22Expand
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A novel peroxiredoxin of the plant Sedum lineare is a homologue of Escherichia coli bacterioferritin co-migratory protein (Bcp).
We cloned a gene encoding a 17-kDa protein from a cDNA library of the plant Sedum lineare and found that its deduced amino acid sequence showed similarities to those of Escherichia coliExpand
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RecQ DNA helicase of Escherichia coli. Characterization of the helix-unwinding activity with emphasis on the effect of single-stranded DNA-binding protein.
RecQ protein of Escherichia coli is a DNA helicase implicated in the RecF pathway of genetic recombination. To gain insight into the mode of its action, the effect of single-stranded DNA-bindingExpand
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Ferritin from the obligate anaerobe Porphyromonas gingivalis: purification, gene cloning and mutant studies.
Porphyromonas gingivalis is an obligate anaerobe that utilizes haem, transferrin and haemoglobin efficiently as sources of iron for growth, and has the ability to store haem on its cell surface,Expand
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