Characterization of a broad-scope amino acid transport system in sand dollars

Journal Article · Tue Mar 01 00:00:00 EST 1988 · American Journal of Physiology; (USA)

OSTI ID:7101031

Davis, J P; Bellis, S; Stephens, G C ^[1]

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1. Univ. of California, Irvine (USA)

Both echinoderm embryos and adults take up {sup 14}C-labelled-{alpha}-amino acids by an apparent broad-scope transport system. This transporter can be characterized as follows: alanine transport is not blocked by {alpha}-(methylamino)isobutyric acid. Leucine and other lipophilic neutral amino acids are preferentially transported. Transport is sodium dependent and blocked by 2-aminobicyclo-(2,2,1)heptane-2-carboxyclic acid. Lysine and aspartate transport is inhibited by lipophilic neutral amino acids. Taurine, a {beta}-neutral amino acid is translocated via a second and independent carrier.

• OSTI ID: 7101031
• Journal Information: American Journal of Physiology; (USA), Vol. 254:3; ISSN 0002-9513
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
AMINO ACIDS
MEMBRANE TRANSPORT
CARBON 14 COMPOUNDS
MEMBRANE PROTEINS
BIOCHEMICAL REACTION KINETICS
ADULTS
ALANINES
ASPARTIC ACID
CARBOXYLIC ACIDS
ECHINODERMS
EMBRYOS
ISOBUTYRIC ACID
LEUCINE
LYSINE
SODIUM COMPOUNDS
TAURINE
AGE GROUPS
ALKALI METAL COMPOUNDS
AMINES
ANIMALS
AQUATIC ORGANISMS
INVERTEBRATES
KINETICS
LABELLED COMPOUNDS
MONOCARBOXYLIC ACIDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PROTEINS
REACTION KINETICS
SULFONIC ACIDS
550201* - Biochemistry- Tracer Techniques