PMID: 429329Apr 25, 1979Paper

The amino acid sequence of bovine hypothalamic substance P. Identity to substance P from colliculi and small intestine.

The Journal of Biological Chemistry
R Carraway, S E Leeman

Abstract

Bovine substance P has been isolated in pure form from hypothalamic fragments and its complete amino acid sequence determined by studies performed on the intact peptide and on its isolated papain-generated fragments. Direct evidence for the positioning of each residue was obtained, amide assignments were unequivocally established, and the COOH-terminal residue was isolated and identified as Met-NH2. The results of total enzymic digestion performed on each of the peptides obtained argue against the presence of any non-amino acid constituents in the molecule. The amino acid sequence obtained is identical with that previously reported for material isolated form bovine colliculi and from equine small intestine.

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