Shin M, Gomez-Garzon C, Payne SM. Vanadate inhibits Feo-mediated iron transport in Vibrio cholerae.
Metallomics 2021;
13:6407528. [PMID:
34673980 DOI:
10.1093/mtomcs/mfab059]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 10/17/2021] [Indexed: 11/14/2022]
Abstract
Iron is an essential element for Vibrio cholerae to survive, and Feo, the major bacterial system for ferrous iron transport, is important for growth of this pathogen in low-oxygen environments. To gain insight into its biochemical mechanism, we evaluated the effects of widely used ATPase inhibitors on the ATP hydrolysis activity of the N-terminal domain of V. cholerae FeoB. Our results showed that sodium orthovanadate and sodium azide effectively inhibit the catalytic activity of the N-terminal domain of V. cholerae FeoB. Further, sodium orthovanadate was the more effective inhibitor against V. cholerae ferrous iron transport in vivo. These results contribute to a more comprehensive biochemical understanding of Feo function, and shed light on designing effective inhibitors against bacterial FeoB proteins.
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