Oxytocin

**Semantic type:** Amino Acid, Peptide, or Protein|Hormone

**Definition:** Oxytocin (9 aa, ~1 kDa) is encoded by the human OXT gene. This protein plays a role in smooth muscle contraction in both the mammary gland and uterus. Oxytocin also may also be involved in maternal-newborn bonding, cognition and many other psychological and physiological processes.

**Synonyms:** - 1-({(4R,7S,10S,13S,16S,19R)-19-amino-7-(2-amino-2-oxoethyl)-10-(3-amino-3-oxopropyl)-16-(4-hydroxybenzyl)-13-[(1S)-1-methylpropyl]-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentaazacycloicosan-4-yl}carbonyl)-L-prolyl-L-leucylglycinamide - 3-Isoleucine-8-Leucine Vasopressin - CYIQNCPLG-NH2 - Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH2 - OXT - Ocytocin - Vasporessin, 3-Isoleucine-8-Leucine