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. 1977 May;74(5):1846–1850. doi: 10.1073/pnas.74.5.1846

Neurotensin: specific binding to synaptic membranes from rat brain.

P Kitabgi, R Carraway, J Van Rietschoten, C Granier, J L Morgat, A Menez, S Leeman, P Freychet
PMCID: PMC431025  PMID: 266706

Abstract

The binding of neurotensin to synaptic membranes from rat brain was studied at 24 degrees with the use of [3H]neurotensin. The binding was found to be highly specific, saturable, and reversible. Values for KD of 2 nM and 0.9 nM were derived from equilibrium and kinetic experiments, respectively. Virtually no degradation of neurotensin was observed in the incubation medium after exposure to synaptic membranes under the conditions of the binding studies. Competitive inhibition of [3H]neurotensin binding by partial sequences of neurotensin revealed that the addition of the residue arginine-8 to the neurotensin-(9-13)-pentapeptide increases about 500-fold the relative binding potency, whereas the remaining portion of the NH2-terminal region is mainly responsible for full pharmacological potency; the COOH-terminal leucyl residue is essential for binding.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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