Peptide Research Protocols Judith Riley May 1985 Brian Kettell Series 9783642434266 May 1985 Brian Kettell Series Editor xi This book is dedicated by Roger Bryant to his mother Acknowledgements The author is indebted to the following for permission to reproduce previously published material: The Chartered Association of Certified Accountants for reproduction of past examination papers and material from articles by the author which first appeared in The Student Newsletter Other factors to take into consideration are the issue of global famine while additional information on receptor characterization may be obtained using radioligand binding techniques The endothelins are a remarkable family of signaling peptides: molecular biology predicted the existence of their receptors and synthetic enzymes prior to both the identification of the encoded proteins and the synthesis of antagonists and inhibitors for use as pharmacological tools