%0 Journal Article %A Postgate, J. R. %T Iron and the Synthesis of Cytochrome C3 %D 1956 %J Microbiology, %V 15 %N 1 %P 186-193 %@ 1465-2080 %R https://doi.org/10.1099/00221287-15-1-186 %I Microbiology Society, %X Summary: Desulphovibrio desulphuricans (E1 Agheila Z), in lactate + sulphate media, required 10 mµmole Fe/ml. for optimal growth; no absolute iron requirement was demonstrable in pyruvate + sulphate media but iron up to 20 mµmole/ml. stimulated growth. In a sulphate-deficient pyruvate medium, in which this strain can grow, iron was not required nor did it stimulate growth. Organisms grown with limited iron formed limited amounts of cytochrome c 3, and in the absence of iron were markedly deficient in this; their content of hydrogenase was reduced to a lesser extent and their content of desulphoviridin was only halved. Iron-deficient organisms were able to reduce sulphate only slowly. Less than 1 % of the iron added to cultures was accounted for as cytochrome c 3, though only some 6 % of this iron remained in solution after growth. %U https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-15-1-186