Genomic and Transcriptomic Insights into Calcium Carbonate Biomineralization by Marine Actinobacterium Brevibacterium linens BS258.

ABSTRACT: Calcium carbonate (CaCO₃) biomineralization has been investigated due to its wide range of scientific and technological implications, however, the molecular mechanisms of this important geomicrobiological process are largely unknown. Here, a urease-positive marine actinobacterium Brevibacterium linens BS258 was demonstrated to effectively form CaCO₃ precipitates. Surprisingly, this bacterium could also dissolve the formed CaCO₃ with the increase of the Ca²⁺ concentration. To disclose the mechanisms of biomineralization, the genome of B. linens BS258 was further completely sequenced. Interestingly, the expression of three carbonic anhydrases was significantly up-regulated along with the increase of Ca²⁺ concentration and t

SUBMITTER: Zhu Y 

PROVIDER: S-EPMC5382220 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature