Abstract
Locusts ( Schistocerca americana gregaria) were injected with a tracer dose of 0.25 μCi of [ 14C]taurine into the haemolymph and its clearance from haemolymph and uptake into flight muscle, thoracic ganglia and eye were studied at times thereafter. Clearance of labelled taurine from haemolymph suggested that the amino acid was rapidly taken up by some tissues and more slowly by others. Thus uptake of [ 14C]taurine was rapid into nervous tissues and eye, but was much more gradual into flight muscle. Uptake was inhibited by cold and the structural analogues of taurine, ß-alanine, γ-aminobutyric acid and hypotaurine. Taurine was retained in all tissues over a long period, indicating a very slow rate of catabolism for this amino acid in the locust.
Published Version
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