Metal sulfides are a {common|typical|frequent|widespread|prevalent|popular} group of extracellular bacterial biominerals. Only {few|couple of|handful of} {cases|instances|circumstances|situations} of intracellular biomineralization {have been|happen to be|have already been} reported {in this|within this} group, {mostly|mainly|largely} {limited|restricted} to greigite (Fe3S4) in magnetotactic bacteria. {Here|Right here}, we report the intracellular but periplasmic biomineralization of copper sulfide by the magnetotactic bacterium Desulfamplus magnetovallimortis (strain BW-1) {that is|that’s|which is|that is certainly|that is definitely|that may be} {known|recognized|identified} to mineralize greigite and magnetite (Fe3O4) {in the|within the|inside the} cytoplasm. BW-1 produces {hundreds of|a huge selection of|numerous} spherical nanoparticles, composed of 1-2 nm substructures of a poorly crystalline hexagonal copper sulfide that remains {in a|inside a|within a} thermodynamically unstable state. Differential proteomics suggests that periplasmic proteins, {such as|like|including|for example|for instance|which include} a DegP-like protein {and a|along with a|as well as a|plus a|and also a|in addition to a} heavy metal-binding protein, {could be|might be|could possibly be|may be|may very well be} involved {in this|within this} {process|procedure|method|approach|course of action}. The unexpected periplasmic formation of copper sulfide nanoparticles in BW-1 reveals previously unknown possibilities for intracellular biomineralization. 2-(Trifluoromethyl)isonicotinic acid manufacturer Buy1445-55-2 PMID:24633055
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