Hemin Reconstitutes Proton Extrusion in an H + -ATPase-Negative Mutant of Lactococcus lactis
Open Access
- 15 November 2001
- journal article
- Published by American Society for Microbiology in Journal of Bacteriology
- Vol. 183 (22) , 6707-6709
- https://doi.org/10.1128/jb.183.22.6707-6709.2001
Abstract
H+-ATPase is considered essential for growth ofLactococcus lactis. However, media containing hemin restored the aerobic growth of an H+-ATPase-negative mutant, suggesting that hemin complements proton extrusion. We show that inverted membrane vesicles prepared from hemin-grown L. lactis cells are capable of coupling NADH oxidation to proton translocation.Keywords
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