Competitive interaction between endothelin and sarafotoxin: Binding and phosphoinositides hydrolysis in rat atria and brain

I. Ambar, Y. Kloog, I. Schvartz, E. Hazum, M. Sokolovsky*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

151 Scopus citations

Abstract

Binding studies with the structurally similar vasoconstrictor peptides 125I-endothelin and 125I-sarafotoxin b, the former of mammalian origin and the latter derived from snake venom, reveal their mutually exclusive binding to rat atrium and various regions of the rat brain. In these tissues endothelin, like sarafotoxin, induces phosphoinositide hydrolysis which is in part Ca2+-independent. It is suggested that endothelins and sarafotoxins share common binding sites and mechanisms of action.

Original languageEnglish
Pages (from-to)195-201
Number of pages7
JournalBiochemical and Biophysical Research Communications
Volume158
Issue number1
DOIs
StatePublished - 16 Jan 1989

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