The mechanisms of amino acid uptake by Brugia pahangi in vitro.

The transcuticular uptake of L-glycine and L-arginine by adult female Brugia pahangi has been shown to involve both a saturable carrier transport system and diffusion. The uptake of L-glycine was competitive with regard to L-methionine, L-valine, and L-phenylalanine but noncompetitive with L-arginine. It is suggested that at least two distinct loci are involved in the transcuticular movement of amino acids in this filarial nematode.