Rhenium has no known essential biological function. However, rhenium can act as an analog to vanadium in a molybdenum-independent nitrogen fixation system in Azotobacter vinelandii (Bishop et al, 1982). Desulfovibrio desulfuricans can reduce rhenium(VII) to rhenium(IV) using H2 as an electron donor under anaerobic conditions (Xu et al, 2000).

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Xu H, Barton LL, Zhang P, Wang Y. TEM investigation of U6+ and Re7+ reduction by Desulfovibrio desulfuricans, a sulfate-reducing bacterium. Materials Research Society Symposium Proceedings. 2000;608(Scientific Basis for Nuclear Waste Management XXIII):299-304.


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