title: Relationship between the malonylation of 1-aminocyclopropane-1-carboxylic acid and D-amino acids in mung-bean hypocotyls.
abstract: In sections from hypocotyls of dark-grown mung-bean (Vigna radiata L.) seedlings, D-phenylalanine and D-methionine (D-met) inhibited the formation of 1-(malonylamino)cyclopropane-1-carboxylic acid from exogenously administered 1-aminocyclopropane-1-carboxylic acid (ACC), resulting in an increase in free ACC content and stimulation of ethylene production, whereas their L-enantiomers had little or no such effect. When the hypocotyls were administered D-Met, it was mainly metabolized to N-malonylmethionine and N-malonylmethionine sulfoxide, and this malonylation process was inhibited to a greater extent by ACC and D-amino acids (phenylalanine and serine) than by L-amino acids. These results indicate that malonylation of D-amino acids and of ACC are intimately interrelated.
authors.affiliation: Department of Vegetable Crops, University of California, 95616, Davis, CA, USA.
authors.forename: Y
authors.initials: Y
authors.lastname: Liu
authors.forename: N E
authors.initials: NE
authors.lastname: Hoffman
authors.forename: S F
authors.initials: SF
authors.lastname: Yang