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Profiling of lipids in Thermus thermophilus HB8 grown under various conditions
In this study, several unidentified lipids were detected, and elucidation of the lipid structures will provide important information on the environmental adaptation of bacteria.PMID:37394432 | DOI:10.2323/jgam.2023.06.006 (Source: Journal of General and Applied Microbiology)
Source: Journal of General and Applied Microbiology - July 2, 2023 Category: Microbiology Authors: Masahiko Kawaguchi Haruo Shimada Yoshitaka Bessho Naoki Nemoto Source Type: research

Whole genome analyses for c-type cytochromes associated with respiratory chains in the extreme thermophile, Thermus thermophilus
J Gen Appl Microbiol. 2023 Jun 30. doi: 10.2323/jgam.2023.06.005. Online ahead of print.ABSTRACTIn thermophilic microorganisms, c-type cytochrome (cyt) proteins mainly function in the respiratory chain as electron carriers. Genome analyses at the beginning of this century revealed a variety of genes harboring the heme c motif. Here, we describe the results of surveying genes with the heme c motif, CxxCH, in a genome database comprising four strains of Thermus thermophilus, including strain HB8, and the confirmation of 19 c-type cytochromes among 27 selected genes. We analyzed the 19 genes, including the expression of four,...
Source: Journal of General and Applied Microbiology - July 2, 2023 Category: Microbiology Authors: Koyu Hon-Nami Atsushi Hijikata Kei Yura Yoshitaka Bessho Source Type: research

Artificial activation of both σ < sup > H < /sup > and Spo0A in Bacillus subtilis enforced initiation of spore development at the vegetatively growing phase
J Gen Appl Microbiol. 2023 Jun 29. doi: 10.2323/jgam.2023.06.004. Online ahead of print.ABSTRACTWhen Bacillus subtilis cells face environmental deterioration, such as exhaustion of nutrients and an increase in cell density, they form spores. It is known that phosphorylation of Spo0A and activation of σH are key events at the initiation of sporulation. However, the initiation of sporulation is an extremely complicated process, and the relationship between these two events remains to be elucidated. To determine the minimum requirements for triggering sporulation initiation, we attempted to induce cell sporulation at the log...
Source: Journal of General and Applied Microbiology - June 28, 2023 Category: Microbiology Authors: Tomomitsu Karaki Ai Sunaga Yasuhiro Takahashi Kei Asai Source Type: research

Protein-protein interaction-mediated regulation of lysine biosynthesis of Thermus thermophilus through the function-unknown protein LysV
J Gen Appl Microbiol. 2023 Jun 26. doi: 10.2323/jgam.2023.06.003. Online ahead of print.ABSTRACTT. thermophilus biosynthesizes lysine via α-aminoadipate as an intermediate using the amino-group carrier protein, LysW, to transfer the attached α-aminoadipate and its derivatives to biosynthetic enzymes. A gene named lysV, which encodes a hypothetical protein similar to LysW, is present in the lysine biosynthetic gene cluster. Although the knockout of lysV did not affect lysine auxotrophy, lysV homologs are conserved in the lysine biosynthetic gene clusters of microorganisms belonging to the phylum Deinococcus-Thermus, sugge...
Source: Journal of General and Applied Microbiology - June 26, 2023 Category: Microbiology Authors: Yutaro Morita Ayako Yoshida Siyan Ye Takeo Tomita Minoru Yoshida Saori Kosono Makoto Nishiyama Source Type: research