Glucose- and phlorrhizin-protected thiol groups in pig intestinal brush-border membranes.
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چکیده
منابع مشابه
Demonstration of electrogenic Na+-dependent D-glucose transport in intestinal brush border membranes.
Na(+)-coupled D-glucose transport was studied in isolated membrane vesicles from intestinal brush borders. Concentration gradients of SCN(-), K(+), and H(+) were established between the intravesicular solution and the incubation medium and their influence on D-glucose uptake from the medium was measured. A gradient (medium > vesicle) of NaSCN, but not of KSCN, produced a transient overshoot of ...
متن کاملIntestinal brush border membranes contain regulatory subunits of adenylyl cyclase.
Cholera toxin alters intestinal function by stimulation of adenylyl cyclase [ATP pyrophosphate-lyase (cyclizing) or adenylate cyclase, EC 4.6.1.1]. The mechanism of this activation is unknown and particularly puzzling because adenylyl cyclase is confined to the basal lateral membrane of enterocytes, whereas it is the brush border membrane that binds the toxin and contains proteins that undergo ...
متن کاملShaping the intestinal brush border
Epithelial cells from diverse tissues, including the enterocytes that line the intestinal tract, remodel their apical surface during differentiation to form a brush border: an array of actin-supported membrane protrusions known as microvilli that increases the functional capacity of the tissue. Although our understanding of how epithelial cells assemble, stabilize, and organize apical microvill...
متن کاملBrush Border Membranes. Ciba Foundation Symposium 95
paradox tacitly describes the specific and dynamic pathways along which plasma membranes must be moved in cells, and several studies on the nature and regulation of this complex system have been assembled and summarized in this volume, which contains papers and discussions from a symposium on membrane recycling held at the Ciba Foundation in London in January 1982. As is the case with nearly al...
متن کاملRelationship between peptide hydrolases in brush-border and cytosol fractions of guinea-pig intestinal mucosa.
Studies on the terminal stages of mammalian protein digestion, which is thought to involve the hydrolysis of peptides containing from two to six amino acids (Crampton et al., 1971), have been hampered by the fact that the enzymes involved appear to be distributed between two fractions of the mucosal cells (enterocytes), the brushborder and cytosol fractions (Peters, 1970). Some controversy exis...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1975
ISSN: 0264-6021
DOI: 10.1042/bj1470617