Publications by authors named "Ryoko Hamada"

Article Synopsis
  • - RSC is a crucial chromatin remodeling complex in yeast (Saccharomyces cerevisiae) that depends on ATP and exists in two forms, involving different isoforms of a key subunit, Nps1/Sth1.
  • - A genetic screening method identified links between RSC and mitochondrial function, showing that mutations in rsc genes led to respiratory growth issues and mitochondrial aggregation.
  • - Overexpression studies revealed that RSC isoforms have overlapping roles in promoting respiratory growth by regulating mitochondrial gene expression through interaction with the HAP transcriptional complex.
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Aspergillus oryzae is a fungus that is used widely in traditional Japanese fermentation industries. In this study, the lethal and mutagenic effects of different linear energy transfer (LET) radiation in freeze-dried conidia of A. oryzae were investigated.

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To assess the position of Kuro-Koji molds in black Aspergillus, we performed sequence analysis of approximately 2500 nucleotides of partial gene fragments, such as histone 3, on a total of 57 Aspergillus strains, including Aspergillus kawachii NBRC 4308, 12 Kuro-Koji molds isolated from awamori breweries in Japan, Aspergillus niger ATCC 1015, and A. tubingensis ATCC10550. Sequence results showed that all black Aspergillus strains could be classified into 3 types, type N which includes A.

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Aspergillus oryzae, although closely related to Aspergillus flavus, does not produce aflatoxin (AF). A. oryzae RIB strains can be classified into three groups (group 1-3) based on the structure of the AF biosynthesis gene homolog cluster (AFHC).

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