Essential amino acid transporter Lat4 ( Slc43a2 ) is required for mouse development

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Title : Essential amino acid transporter Lat 4 ( Slc 43 a 2 ) is required for mouse development

KEY POINTS: Lat4 (Slc43a2) transports branched-chain amino acids, phenylalanine and methionine, and is expressed in kidney tubule and small intestine epithelial cells. Using a new knockout model as a negative control, it is shown that Lat4 is expressed at the basolateral side of small intestine enterocytes and kidney epithelial cells of the proximal tubule, thick ascending limb and distal convo...

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T-type amino acid transporter TAT1 (Slc16a10) is essential for extracellular aromatic amino acid homeostasis control.

The uniporter TAT1 (Slc16a10) mediates the facilitated diffusion of aromatic amino acids (AAAs) across basolateral membranes of kidney, small intestine and liver epithelial cells, and across the plasma membrane of non-epithelial cells like skeletal myocytes. Its role for body AA homeostasis has now been investigated using newly generated TAT1 (Slc16a10) defective mice (tat1(-/-)). These mice gr...

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Identification of LAT4, a novel amino acid transporter with system L activity.

System L amino acid transporters mediate the movement of bulky neutral amino acids across cell membranes. Until now three proteins that induce system L activity have been identified: LAT1, LAT2, and LAT3. The former two proteins belong to the solute carrier family 7 (SLC7), whereas the latter belongs to SLC43. In the present study we present a new cDNA, designated LAT4, which also mediates syst...

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Endogenous production of lipoic acid is essential for mouse development.

alpha-Lipoic acid (LA) is a cofactor for mitochondrial alpha-ketoacid dehydrogenase complexes and is one of the most potent, natural antioxidants. Reduction of oxidative stress by LA supplementation has been demonstrated in patients with diabetic neuropathy and in animal models. To determine how normal development or pathological conditions are affected by genetic alterations in the ability of ...

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L-arginine uptake by cationic amino acid transporter 2 is essential for colonic epithelial cell restitution.

Restoration of the colonic epithelial barrier is an important response during colitis. L-arginine (L-Arg) is a semiessential amino acid that reduces murine colitis induced by Citrobacter rodentium. Cationic amino acid transporter (CAT) proteins increase L-Arg uptake into cells. L-Arg is utilized to produce nitric oxide (NO), by inducible NO synthase (iNOS), or L-ornithine (L-Orn) by arginase (A...

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ژورنال

عنوان ژورنال: The Journal of Physiology

سال: 2015

ISSN: 0022-3751,1469-7793

DOI: 10.1113/jphysiol.2014.283960