The molecule is a peptide cation obtained from the deprotonation of the carboxy group of L-leucine residue, and protonation of the amino group of L-isoleucyl and protonation of the side chains of L-arginyl residues of kinetensin. It is the major species at pH 7.3. It has a role as a human metabolite and a histamine releasing agent. It is a conjugate acid of a kinetensin.
(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-1-[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S,3S)-2-azaniumyl-3-methylpentanoyl]amino]propanoyl]amino]-5-(diaminomethylideneazaniumyl)pentanoyl]amino]-5-(diaminomethylideneazaniumyl)pentanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]pyrrolidine-2-carbonyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-3-phenylpropanoyl]amino]-4-methylpentanoate