Periplasmic Bacterial Biomineralization of Copper Sulfide Nanoparticles.

ABSTRACT: Metal sulfides are a common group of extracellular bacterial biominerals. However, only a few cases of intracellular biomineralization are reported in this group, mostly limited to greigite (Fe₃ S₄ ) in magnetotactic bacteria. Here, a previously unknown periplasmic biomineralization of copper sulfide produced by the magnetotactic bacterium Desulfamplus magnetovallimortis strain BW-1, a species known to mineralize greigite (Fe₃ S₄ ) and magnetite (Fe₃ O₄ ) in the cytoplasm is reported. BW-1 produces hundreds of spherical nanoparticles, composed of 1-2 nm substructures of a poorly crystalline hexagonal copper sulfide structure that remains in a thermodynamically unstable state. The particles appear to be surrounded by an organ

SUBMITTER: Park Y 

PROVIDER: S-EPMC9534983 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature