Divalent cation‐dependent 3H‐L‐leucine transport in lobster intestine

Transepithelial D-glucose and D-fructose Transport Across Lobster Intestine

Transepithelial D-glucose and D-fructose transport across the American lobster, Homarus americanus, intestine.

Transepithelial transport of dietary D-glucose and d-fructose was examined in the lobster Homarus americanus intestine using D-[(3)H]glucose and D-[(3)H]fructose. Lobster intestines were mounted in a perfusion chamber to determine transepithelial mucosal to serosal (MS) and serosal to mucosal (SM) transport mechanisms of glucose and fructose. Both MS glucose and fructose transport, as functions...

Divalent anion transport in isolated renal tubules.

Inorganic phosphate and sulfate are the major divalent anions in biological fluids at physiological pH. The isolated perfused renal tubule technique has been used to address a number of questions about their renal transport; the purpose of this review is to summarize this information. Initial studies addressed traditional questions about the direction and segmental localization of phosphate and...

Divalent cation transport by VNUT DIVALENT CATION TRANSPORT BY VESICULAR NUCLEOTIDE TRANSPORTER

The vesicular nucleotide transporter (VNUT) is a secretory vesicle protein that is responsible for the vesicular storage and subsequent exocytosis of ATP (Sawada, K. et al., (2008) Proc. Natl. Acad. Sci. U.S.A. 105, 11720-11724). Since VNUT actively transports ATP in a membrane potential (Δψ)-dependent manner irrespective of divalent cations such as Mg or Ca, VNUT recognizes free ATP as a trans...

Epithelial glucose transport by lobster antennal gland

Transport of d-[3H]glucose into lobster (Homarus americanus) brush-border membrane vesicles (BBMVs) prepared by Mg2+ precipitation from antennal gland labyrinth-coelomosac tissue was examined. Influx of d-glucose occurred primarily by a phlorizin-sensitive, Na+-dependent carrier similar to that found in vertebrate renal epithelium. An inwardly directed Na+ gradient drove concentrative d-glucose...