Catalytic Biomineralization of Fluorescent Calcite by the Thermophilic Bacterium Geobacillus thermoglucosidasius

The thermophilic Geobacillus bacterium catalyzed the formation of 100-μm hexagonal crystals at 60°C in a hydrogel containing sodium acetate, calcium chloride, and magnesium sulfate. Under fluorescence microscopy, crystals fluoresced upon excitation at 365 ± 5, 480 ± 20, or 545 ± 15 nm. X-ray diffrac...

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Veröffentlicht in:	Applied and Environmental Microbiology 2010-11, Vol.76 (21), p.7322-7327
Hauptverfasser:	Yoshida, Naoto, Higashimura, Eiji, Saeki, Yuichi
Format:	Artikel
Sprache:	eng
Schlagworte:	Bacteria Bacteriology Biological and medical sciences Biotechnology Calcification, Physiologic Calcium carbonate Calcium Carbonate - metabolism Calcium Chloride - metabolism Catalysis Crystallization Diffraction Fundamental and applied biological sciences. Psychology Geobacillus Geobacillus - metabolism Hydrogels Magnesium Sulfate - metabolism Microbiology Microscopy Microscopy, Fluorescence Sodium Acetate - metabolism Temperature effects X-Ray Diffraction
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Zusammenfassung:	The thermophilic Geobacillus bacterium catalyzed the formation of 100-μm hexagonal crystals at 60°C in a hydrogel containing sodium acetate, calcium chloride, and magnesium sulfate. Under fluorescence microscopy, crystals fluoresced upon excitation at 365 ± 5, 480 ± 20, or 545 ± 15 nm. X-ray diffraction indicated that the crystals were magnesium-calcite in calcite-type calcium carbonate.
ISSN:	0099-2240 1098-5336 1098-6596
DOI:	10.1128/AEM.01767-10