Alanine influx across serosal border of Testudo graeca intestine.
Biochim Biophys Acta
; 595(1): 121-5, 1980.
Article
em En
| MEDLINE
| ID: mdl-7349874
ABSTRACT
The influx of alanine across the serosal membrane of Testudo graeca intestinal cells with preserved epithelial orientation was examined. Our results suggest that 1. The mechanism of alanine influx across the serosal membrane of turtle intesintal cells is a carrier-mediated process that has the characteristics of facilitated diffusion. 2. Alanine influx mechanism is independent of intra- and extra-cellular changes in Na+ and K+ concentrations, and is not altered by reversal of Na+ and K+ gradients across the serosal membrane. 3. In Na+-free media the mechanism of transport of alanine at the mucosal membrane has the same pattern of competitive inhibition by amino acids as the serosal.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Tartarugas
/
Alanina
/
Mucosa Intestinal
Limite:
Animals
Idioma:
En
Ano de publicação:
1980
Tipo de documento:
Article