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''Bacillus pumilus'' is a Gram-positive, aerobic, spore-forming bacillus commonly found in soil.〔Priest FG (1993) Systematics and Ecology of Bacillus. In: Sonenshein AL, Hoch JA, Losick R, editors. Bacillus subtilis and Other Gram-Positive Bacteria: Biochemistry, Physiology, and Molecular Genetics. Washington, D.C.: ASM Press. pp. 3–16.〕 ''B. pumilus'' spores—with the exception of mutant strain ATCC 7061—generally show high resistance to environmental stresses, including UV light exposure, desiccation, and the presence of oxidizers such as hydrogen peroxide.〔(【引用サイトリンク】url=http://pathema.jcvi.org/cgi-bin/Bacillus/shared/GenomePage.cgi?org=gbat )〕 Strains of ''B. pumilus'' found at the NASA Jet Propulsion Laboratory were found to be particularly resistant to hydrogen peroxide. A strain of ''B. pumilus'' isolated from black tiger shrimp (''Penaeus monodon'') was found to have high salt tolerance and to inhibit the growth of marine pathogens, including ''Vibrio alginolyticus'', when cultured together. == Genome and cell structure == ''B. pumilus'' contains one circular chromosome including about 4000 genes and 3600-3900 proteins with varying length in the range of 3.7 to 3.8 Mbp. 41% of the DNA base pairs in ''B. pumilus'' are G-C. The cellular structure of ''B. pumilus'' is similar to other ''Bacillus'' species such as ''B. subtilis'', ''B. megaterium'', and ''B. cereus'', the outer layer of the peptidoglycan cross-links in ''B. pumilus'' is covered by teichoic and lipoteichoic acids same as the most other Gram positive bacteria. These acids contain polyglycosyl phosphates with mono- and disaccharides as their monomers that can play a role in adhesion to different surfaces like the host cells.〔Parvathi A. “Biochemical and molecular characterization of Bacillus pumilus isolated fromcoastal environment in Cochin” India. Braz J Microbiol. 2009 (40) 269.〕〔Potekhina N.V. “Phosphate Containing Cell Wall Polymers of Bacilli” Biochem 2011 (76) 745.〕 On the other hand, these phosphate groups on the surface of ''B. pumilus'' can provide net negative charge on the cell surface that allowing to capture some essential cations such as Ca2+ and Mg2+ that are necessary for cell life. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Bacillus pumilus」の詳細全文を読む スポンサード リンク
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