Membrane-bound respiratory system of Enterobacter cloacae strain HO1 grown anaerobically with chromate
Open Access
- 1 February 1991
- journal article
- Published by Oxford University Press (OUP) in FEMS Microbiology Letters
- Vol. 78 (1) , 11-15
- https://doi.org/10.1016/0378-1097(91)90246-7
Abstract
Chromate has been demonstrated to be an electron acceptor in the respiratory chain of anaerobically grown Enterobacter cloacae strain HO1. By using potentiometric titration and low temperature spectroscopy, the spectral absorption of the anaerobic membrane vesicles of this organisms in the presence of chromate was resolved into six peaks at 548, 549, 550, 555, 556, and 558 nm in the α band of the reduced minus oxidized spectra. The spectra elicited by chromate are attributed to cytochromes c548, c549, c550, b555, and b558. Among these cytochromes, c548 was found to be specifically involved in electron transfer to chromate.Keywords
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