-transparent.png){kind=logo}
The characteristics of renal transport of L-alanine by luminal-membrane vesicles from proximal straight tubules (pars recta) of rabbit kidney were investigated. The following picture emerges from transport studies. Two electrogenic and Na+ requiring systems confined to this region of the nephron exist for the transport of L-alanine. In addition to Na+, the transport of L-alanine was influenced by H+. However, H+ does not substitute for Na+, but instead potentiates the Na+ effect. Modification of histidyl residues of the intact luminal-membrane vesicles by diethylpyrocarbonate (DEP), completely abolished the transient renal accumulation of L-alanine. Substrate and Na+-protection experiments suggest that histidyl residues may be at or close to the active site of the L-alanine transporter in membrane vesicles from pars recta.
H Vorum, and
H Jessen, and
K E Jørgensen, and
M I Sheikh
May 1988,
The American journal of physiology,
H Vorum, and
H Jessen, and
K E Jørgensen, and
M I Sheikh
March 1988,
Biochimica et biophysica acta,
H Vorum, and
H Jessen, and
K E Jørgensen, and
M I Sheikh
August 1988,
FEBS letters,
H Vorum, and
H Jessen, and
K E Jørgensen, and
M I Sheikh
May 1991,
Biochimica et biophysica acta,
H Vorum, and
H Jessen, and
K E Jørgensen, and
M I Sheikh
December 1990,
The Biochemical journal,
H Vorum, and
H Jessen, and
K E Jørgensen, and
M I Sheikh
March 1990,
The Journal of physiology,
H Vorum, and
H Jessen, and
K E Jørgensen, and
M I Sheikh
September 1991,
Biochimica et biophysica acta,
H Vorum, and
H Jessen, and
K E Jørgensen, and
M I Sheikh
January 1989,
FEBS letters,
H Vorum, and
H Jessen, and
K E Jørgensen, and
M I Sheikh
April 1989,
The Journal of physiology,
H Vorum, and
H Jessen, and
K E Jørgensen, and
M I Sheikh
June 1992,
FEBS letters,
