RT Journal Article SR Electronic(1) A1 Green, Jeffrey A1 Haywood, Geoffrey W. A1 Large, Peter J.YR 1982 T1 More Than One Amine Oxidase is Involved in the Metabolism by Yeasts of Primary Amines Supplied as Nitrogen Source JF Microbiology, VO 128 IS 5 SP 991 OP 996 DO https://doi.org/10.1099/00221287-128-5-991 PB Microbiology Society, SN 1465-2080, AB Twenty-seven yeast species were tested for growth on methylamine and n-butylamine as sole nitrogen sources. Five species (including Saccharomyces cerevisiae) failed to grow on either amine, and a further five grew only on n-butylamine. The remainder grew on both amines. Amine oxidase activity was detected in extracts of all the strains which could grow on amines, but was generally absent from cells grown on ammonia or nitrate. From measurements in cell-free extracts of oxidase activity for a number of different amines, it is concluded that most such strains have at least two amine oxidases of different substrate specificity, and that the substrate specificity also varies between different yeast species. Based on these observations, four different groups of yeasts could be distinguished. Formaldehyde dehydrogenase activity was elevated in cells grown on amines or nitrate compared with those grown on ammonia, and activity was generally higher in cells grown on methylamine than in those grown on n-butylamine or nitrate., UL https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-128-5-991