Peptide Transport by Germinating Barley Embryos: Uptake of Physiological Di- and Oligopeptides

Overview

Journal Planta

Specialty Biology

Date 2014 Jan 14

PMID 24414048

Citations 15

Authors

C F Higgins

J W Payne

Affiliations

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Abstract

The uptake of a variety of physiological di- and oligopeptides by germinating barley (Hordeum vulgare L.) embryos is described. Peptides as large as pentaalanine can be absorbed. Evidence is presented suggesting the peptides are absorbed intact and subsequently undergo rapid intracellular hydrolysis. Uptake shows stereospecificity. The transport of peptides is generally faster than the transport of amino acids, making it likely that the former could play an important role in the mobilization of the protein storage reserves during germination. The peptide transport system in barley is compared with similar systems from other groups of organisms.

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