title: Reduction of vanadium(V) by Enterobacter cloacae EV-SA01 isolated from a South African deep gold mine.
abstract: Dissimilatory reduction of vanadium(V) by Enterobacter cloacae EV-SA01, isolated from a gold mine at 1.6 km below surface, is shown to occur anaerobically as well as aerobically. Growth rates were unaffected by up to 2 mM V(2)O(5). Reduction of vanadium(V) was growth phase-dependent and resulted in cell deformities and precipitation of the vanadium in its lower oxidation states. The vanadate reductase activity was membrane-associated and coupled the oxidation of NADH to the reduction of vanadate.
authors.affiliation: Department of Microbial, Biochemical and Food Biotechnology, University of Free State, PO Box 339, Bloemfontein 9300, South Africa.
authors.forename: Jacqueline
authors.initials: J
authors.lastname: van Marwijk
authors.forename: Diederik J
authors.initials: DJ
authors.lastname: Opperman
authors.forename: Lizelle A
authors.initials: LA
authors.lastname: Piater
authors.forename: Esta
authors.initials: E
authors.lastname: van Heerden
mesh_terms: D000332:Aerobiosis; D000693:Anaerobiosis; D002462:Cell Membrane / Q000201:enzymology; D016972:Enterobacter cloacae / Q000166:cytology / Q000254:growth & development / Q000302:isolation & purification / Q000378:metabolism*; D009243:NAD / Q000378:metabolism; D010084:Oxidation-Reduction; D012988:Soil Microbiology; D013019:South Africa; D014639:Vanadium / Q000378:metabolism*
chemical_list: D014639:Vanadium; D009243:NAD