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γ‐Glutamyl‐S‐methylcystein und andere Peptide in der Mondbohne ( Phaseolus lunatus L. )
Author(s) -
Rinderknecht H.,
Thomas Doris,
Aslin Susan
Publication year - 1958
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.660410102
Subject(s) - phaseolus , chemistry , lima beans , sulfoxide , leucine , peptide , biochemistry , stereochemistry , organic chemistry , amino acid , botany , biology
γ ‐Glutamyl‐S‐methylcysteine has been isolated from extracts of lima beans ( Phaseolus lunatus L .). Two further peptides, γ ‐glutamyl‐S‐methylcysteine sulfoxide and γ ‐glutamyl‐leucine have been tentatively identified. In addition, free S‐methylcysteine was found in such extracts. The presence of these constituents in varying amounts was observed in all of 6 other varieties of beans that were investigated. During germination S‐methylcysteine and all peptides occurring in lima beans are metabolized to unknown products. An oxidation‐reduction function during the early phases of growth is suggested for the system: γ ‐glutamyl‐S‐methylcysteine/ γ ‐glutamyl‐S‐methylcysteine sulfoxide.