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Inactivity of glycyl-glycyl-arginine and two putative (QSAR) peptide analogues of barnacle waterborne settlement pheromone

Published online by Cambridge University Press:  31 October 2000

Anthony S. Clare
Affiliation:
Department of Marine Sciences and Coastal Management, University of Newcastle upon Tyne, Newcastle upon Tyne, Tyne & Wear, NE1 7RU, UK Marine Biological Association, Citadel Hill, Plymouth, PL1 2PB, UK
Mizue Yamazaki
Affiliation:
Marine Biological Association, Citadel Hill, Plymouth, PL1 2PB, UK

Abstract

The effect of two putative tripeptide analogues (isoleucine-isoleucine-arginine [IIR] and valine-leucine-arginine [VLR]) and a reported analogue, glycyl-glycyl-arginine (GGR), of the waterborne cue to settlement of Balanus amphitrite amphitrite Darwin cypris larvae has been investigated. Settlement in the presence of these tripeptides was not significantly different from that in filtered seawater. Because crude waterborne cue and settlement-inducing protein complex both significantly evoked settlement, the cyprids used in this study were competent to respond. The overall results, therefore, demonstrate that IIR, VLR and GGR are not analogues of barnacle waterborne settlement pheromone.

Type
Brief Report
Copyright
2000 Marine Biological Association of the United Kingdom

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