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L-赖氨酸-α-酮戊二酸转氨酶在谷氨酸红酵母利用赖氨酸作为氮源的分解代谢中的作用。

Role of L-lysine-alpha-ketoglutarate aminotransferase in catabolism of lysine as a nitrogen source for Rhodotorula glutinis.

作者信息

Kinzel J J, Winston M K, Bhattacharjee J K

出版信息

J Bacteriol. 1983 Jul;155(1):417-9. doi: 10.1128/jb.155.1.417-419.1983.

Abstract

Wild-type and saccharopine dehydrogenaseless mutant strains of Rhodotorula glutinis grew in minimal medium containing lysine as the sole nitrogen source and simultaneously accumulated, in the culture supernatant, large amounts of a product identified as alpha-aminoadipic-delta-semialdehyde. The saccharopine dehydrogenase and pipecolic acid oxidase levels remained unchanged in wild-type cells grown in the presence of ammonium or lysine as the nitrogen source. Lysine-alpha-ketoglutarate aminotransferase activity was demonstrated in ammonium-grown cells. This activity was depressed in cells grown in the presence of lysine as the sole source of nitrogen.

摘要

粘红酵母的野生型和无酵母氨酸脱氢酶突变株在以赖氨酸作为唯一氮源的基本培养基中生长,同时在培养上清液中积累了大量被鉴定为α-氨基己二酸-δ-半醛的产物。在以铵或赖氨酸作为氮源生长的野生型细胞中,酵母氨酸脱氢酶和哌啶酸氧化酶水平保持不变。在以铵生长的细胞中证实了赖氨酸-α-酮戊二酸转氨酶活性。在以赖氨酸作为唯一氮源生长的细胞中,该活性受到抑制。

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