H. Nakayama

Publications58
h-index22
Citations1,688
Highly Influential Citations79
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Escherichia coli RecQ protein is a DNA helicase.
TLDR
It is concluded that RecQ protein is a previously unreported helicase, which might possibly serve to generate single-stranded tails for a strand transfer reaction in the process of recombination.
Hydrogen Peroxide Production in Streptococcus pyogenes: Involvement of Lactate Oxidase and Coupling with Aerobic Utilization of Lactate
TLDR
Results suggest that the lactate oxidase activity of H2O2-producing cells oxidizes lactate to pyruvate, which is in turn converted to acetate, and this latter process proceeds presumably via acetyl coenzyme A and acetyl phosphate with formation of extra ATP.
Concerted Action of Lactate Oxidase and Pyruvate Oxidase in Aerobic Growth of Streptococcus pneumoniae: Role of Lactate as an Energy Source
TLDR
Exogenously added lactate was shown to increase the final growth yield in the presence of both oxidases, predicted by this model, and could be best described by the following scheme.
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
TLDR
A new mutation (recQ1) located between corA and metE on the standard linkage map was found to result in increased sensitivity to ultraviolet light and deficiency in conjugational recombination when placed in the recBC sbcB background, indicating that it blocked the RecF pathway of recobbination.
The recQ gene of Escherichia coli K12: molecular cloning and isolation of insertion mutants
TLDR
Analysis of the Tn3 insertion mutations that abolished the complementation revealed the exclusive localisation of such insertions in the same 3.4 kb segment, providing the firm evidence that both the TLD resistance and the deficiency in the RecF recombination pathway result from loss of the functional recQ gene.
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 coli…
Thymine starvation-induced structural changes in Escherichia coli DNA. Detection by pulsed field gel electrophoresis and evidence for involvement of homologous recombination.
Recombination-deficient mutations and thymineless death in Escherichia coli K12: reciprocal effects of recBC and recF and indifference of recA mutations.
TLDR
The apparent indifference of recA mutation implies that the conventional recombination and repair pathways per se are not involved in TLD and that the hypothetical lethal damage to DNA may be unique in nature.
H2O2-nonproducing Streptococcus pyogenes strains: survival in stationary phase and virulence in chronic granulomatous disease
TLDR
It is suggested that H2O2-nonproducing S. pyogenes strains are prevalent in humans and that they may be a potential threat to the health of CGD patients.
RecQ DNA helicase of Escherichia coli. Characterization of the helix-unwinding activity with emphasis on the effect of single-stranded DNA-binding protein.
TLDR
It is postulated that RecQ helicase is highly adapted to an SSB-rich environment, where the strand exchange reaction mediated by RecA protein, perhaps coupled closely with the RecQ reaction, should also take place.
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