Electron transport and respiration in Beggiatoa and Vitreoscilla
Abstract
Seven strains of bacteria belonging to the Beggiatoa-Vitreoscilla group were studied for their respiratory activity and for the presence of electron transport conponents. All strains tested oxidized [1-14C] and [2-14C] acetate to 14CO2 at relatively high rates. All strains tested were N,N,N′,N′-tetramethylphenylenediamine (TMPD)-oxidase positive and contained spectra representing a-type and carbon monoxide-binding cytochromes. Most of the strains also contained spectra representing c-type and b-type cytochromes. Beggiatoa alba B18LD contained b-type, a-type, c-type and CO-binding cytochromes, the latter two being located in the 144,000 x g soluble fraction. B. alba also contained ubiquinone-8 as its only detectable quinone. © 1986 Springer-Verlag.