The assimilation of acetate and propionate by Prototheca zopfi.

ABSTRACT: 1. The tricarboxylic acid and glyoxylate cycles are of major importance in the assimilation of acetate and propionate by Prototheca zopfii. The pattern of assimilation of [2-(14)C]acetate and [2-(14)C]propionate by whole cells growing with their respective substrates is similar except that, with propionate, beta-hydroxypropionate is the first labelled intermediate detected. 2. Carbon dioxide fixation is of little quantitative importance for the growth of this organism with propionate. 3. The yield of cells obtained/mole of acetate is similar to that obtained/mole of propionate and about half that obtained/mole of n-butyrate, these substrates acting as sole sources of carbon and energy.

SUBMITTER: Lloyd D 

PROVIDER: S-EPMC1264558 | biostudies-other | 1965 Oct

REPOSITORIES: biostudies-other