祖氏原藻对乙酸盐和丙酸盐的同化作用。
The assimilation of acetate and propionate by Prototheca zopfi.
作者信息
Lloyd D, Callely A G
机构信息
Department of Microbiology, University College, Cathays Park, Cardiff.
出版信息
Biochem J. 1965 Oct;97(1):176-9. doi: 10.1042/bj0970176.
Abstract
- 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.
摘要
- 三羧酸循环和乙醛酸循环在魏氏原藻同化乙酸盐和丙酸盐的过程中至关重要。以各自底物生长的全细胞对[2-(14)C]乙酸盐和[2-(14)C]丙酸盐的同化模式相似，只是在丙酸盐同化过程中，β-羟基丙酸盐是首个检测到的标记中间产物。2. 对于该生物体利用丙酸盐生长而言，二氧化碳固定在数量上的重要性不大。3. 每摩尔乙酸盐获得的细胞产量与每摩尔丙酸盐获得的相似，约为每摩尔正丁酸盐获得的一半，这些底物作为唯一的碳源和能源。
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