LIBERATION OF AMINO ACIDS IN PERENNIAL RYE GRASS DURING WILTING
LIBERATION OF AMINO ACIDS IN PERENNIAL RYE GRASS DURING WILTING
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DOI：
10.1042/bj0580046
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发表时间：
1954-01-01
影响因子：
4.1
通讯作者：
MACPHERSON, HT
中科院分区：
文献类型：
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作者：
KEMBLE, AR;MACPHERSON, HT
对枯草中蛋白质水解形成的各种氮化合物基团进行了估计，结果表明，降解蛋白质中所有的N都以α -氨基酸、挥发性碱、酰胺或肽的形式出现。测定了许多游离氨基酸，并将结果与蛋白质分解程度的预期结果进行了比较。除脯氨酸外，所有氨基酸的存在量均低于计算值，且差异很大。脯氨酸在萎蔫草中的含量远远超过预期，但在饥饿期间不让草失去水分时，不发生合成。讨论了这种合成与饥饿期间已知的酰胺形成之间的联系的可能性。
The various groups of nitrogenous compounds formed by proteolysis in wilting grass were estimated and it was shown that all the N from the degraded protein reappears as alpha-amino acid, volatile base, amide or peptide. Many of the free amino acids were determined and the results compared with those expected from the extent of protein breakdown. Except for proline, all the amino acids were present in amounts smaller than calculated and these deficits varied greatly. Proline was found in wilting grass in amounts greatly in excess of expectation, but no synthesis occurred when the grass was not allowed to lose moisture during starvation. The possibility of a connection between this synthesis and the known formation of amide during starvation is discussed.