Abstract
Geobacillus thermoglucosidasius NY05 catalyzes calcite single crystal formation at 60 °C by using acetate and calcium. Endospores are embedded at the central part of the calcite single crystal and carbon atoms in the calcite lattice are derived from acetate carbon. Here, we synthesized 21-mer antisense DNA oligonucleotides targeting sporulation transcription factor, acetate-CoA ligase, isocitrate lyase, and malate synthase G mRNAs and evaluated the effect of these oligonucleotides on calcite formation in G. thermoglucosidasius NY05. G. thermoglucosidasius NY05 cells containing antisense DNA oligonucleotides targeting sporulation transcription factor, acetate-CoA ligase, isocitrate lyase, and malate synthase G mRNAs had reduced calcite single crystal formation by 18.7, 50.6, 55.7, and 82.3%, respectively, compared with cells without antisense DNA oligonucleotides. These results support that calcite formation needs endospores as the nucleus to grow, and carbon dioxide generated from acetate, which is metabolized via the glyoxylate pathway and glucogenesis, is supplied to the crystal lattice.
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Murai, R., Kiyoshi, K. & Yoshida, N. Effect of Target Gene Silencing on Calcite Single Crystal Formation by Thermophilic Bacterium Geobacillus thermoglucosidasius NY05. Curr Microbiol 76, 1298–1305 (2019). https://doi.org/10.1007/s00284-019-01756-y
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DOI: https://doi.org/10.1007/s00284-019-01756-y