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. 1973 Mar;70(3):684-8.
doi: 10.1073/pnas.70.3.684.

Primary structure of somatostatin, a hypothalamic peptide that inhibits the secretion of pituitary growth hormone

R Burgus, N Ling, M Butcher, R Guillemin

Primary structure of somatostatin, a hypothalamic peptide that inhibits the secretion of pituitary growth hormone

R Burgus et al. Proc Natl Acad Sci U S A. 1973 Mar.

Abstract

Somatostatin, a peptide isolated from ovine hypothalamic tissue that inhibits the release of radioimmunoassayable growth hormone in vitro from rat or human pituitary cells or in vivo in rats, has the primary structure [Formula: see text]. The structure was established by submitting the carboxymethylated peptide, the carboxymethylated tryptic digest, and the chymotryptic digest of the peptide to Edman degradation. Degradation products were analyzed by amino-acid analysis, as well as in some cases by determination of N-termini by dansylation or by determination of phenylthiohydantoins by mass spectrometry.

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