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Peptide transport by germinating barley embryos: Uptake of physiological di- and oligopeptides

โœ Scribed by C. F. Higgins; J. W. Payne

Publisher
Springer-Verlag
Year
1978
Tongue
English
Weight
418 KB
Volume
138
Category
Article
ISSN
0032-0935

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โœฆ Synopsis

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.

๐Ÿ“œ SIMILAR VOLUMES

Peptide transport by germinating barley
Peptide transport by germinating barley embryos: Evidence for a single common carrier for di- and oligopeptides
โœ C. F. Higgins; J. W. Payne ๐Ÿ“‚ Article ๐Ÿ“… 1978 ๐Ÿ› Springer-Verlag ๐ŸŒ English โš– 662 KB

Competition for uptake of a range of amino acids and peptides by germinating barley (Hordeum vulgare L.) embryos was studied. Peptides and amino acids show no competition and are apparently absorbed by independent transport systems. However, peptides of widely different structures do compete and it