γ-glutamyl-S-ethenylcysteine:: A dipeptide from Vicia narbonensis

被引：14

作者：

Enneking, D

Delaere, IM

Tate, ME ^{[1
]}

机构：

[1] Univ Adelaide, Waite Agr Res Inst, Dept Plant Sci, Glen Osmond, SA 5064, Australia

[2] Univ Western Australia, Cooperat Res Ctr Legumes Mediterranean Agr, Nedlands, WA 6009, Australia

来源：

PHYTOCHEMISTRY | 1998年 / 48卷 / 04期

关键词：

Vicia narbonensis; Vicieae; Narbon bean; gamma-glutamyl-S-ethynylcysteine; photolabile; chemotaxonomy; non-protein amino acid; off-flavour precursor; grain legume;

D O I：

10.1016/S0031-9422(98)00025-9

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

gamma-Glutamyl-S-ethenylcysteine has been isolated and crystallised from aqueous ethanolic extracts of the seeds of Narbon bean, (Vicia narbonensis). The gamma-glutamyl peptide is present at 0.7% in the Australian Temperate Crops Collection cultivar ATC 60105. Depending upon genotype and environment, seeds with up to 3% peptide have been observed. This photolabile peptide is the precursor responsible for the repulsive odour of germinating Narbon beans. It is a useful chemotaxonomic character for Vicieae, as well.las a significant storage form of seed surfur. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：643 / 645

页数：3

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