Differential effect of sulphur deficiency on the composition of the aminoacyl‐tRNA and free amino acid pools of the developing pea seed

FEBS Letters

Macnicol, P.K.¹ 

[1] Division of Plant Industry, CSIRO, PO Box 1600, Canberra City, ACT 2601, Australia

关键词: Aminoacyl-tRNA;    Free amino acid;    S deficiency;    Seed development;    Pea;    Pisum sativum;   

DOI  :  10.1016/0014-5793(83)80247-6

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

Both aminoacyl-tRNA and free amino acids were extracted from cotyledons of Pisum sativum L., cv. Greenfeast grown under either sulphur-deficient or control conditions, at a stage of active synthesis and accumulation of storage proteins. Sulphur deficiency severely perturbed the composition of the free amino acid pool, causing a marked decrease in the relative level of cysteine but no change in methionine, as well as large increases in arginine, asparagine and other amino acids. On the other hand, the proportions of both sulphur and non-sulphur amino acids in the aminoacyl-tRNA pool were unaltered. This lack of a specific effect of the deficiency on the sulphur amino acids of the aminoacyl pool makes it unlikely that the altered pattern of storage protein synthesis and accumulation is due to unavailability of these amino acids.

【 授权许可】

Unknown