title: 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.
authors.affiliation: Department of Microbiology, University College, Cathays Park, Cardiff.
authors.forename: D
authors.initials: D
authors.lastname: Lloyd
authors.forename: A G
authors.initials: AG
authors.lastname: Callely