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HMDB Protein ID HMDBP01829
Secondary Accession Numbers
  • 7192
Name Oxytocin-neurophysin 1
  1. Neurophysin 1
  2. OT-NPI
  3. Ocytocin
  4. Oxytocin
Gene Name OXT
Protein Type Enzyme
Biological Properties
General Function Involved in neurohypophyseal hormone activity
Specific Function Oxytocin causes contraction of the smooth muscle of the uterus and of the mammary gland
Pathways Not Available
Reactions Not Available
GO Classification
extracellular region
hormone activity
protein binding
receptor binding
neuropeptide hormone activity
neurohypophyseal hormone activity
Cellular Location
  1. Secreted
Gene Properties
Chromosome Location Chromosome:2
Locus 20p13
Gene Sequence
>378 bp
Protein Properties
Number of Residues 125
Molecular Weight 12721.5
Theoretical pI 5.78
Pfam Domain Function
  • 1-19
Transmembrane Regions
  • None
Protein Sequence
>Oxytocin-neurophysin 1
GenBank ID Protein 10334459
UniProtKB/Swiss-Prot ID P01178
UniProtKB/Swiss-Prot Entry Name NEU1_HUMAN
PDB IDs Not Available
GenBank Gene ID AL160414
GeneCard ID OXT
GenAtlas ID OXT
General References
  1. Gerhard DS, Wagner L, Feingold EA, Shenmen CM, Grouse LH, Schuler G, Klein SL, Old S, Rasooly R, Good P, Guyer M, Peck AM, Derge JG, Lipman D, Collins FS, Jang W, Sherry S, Feolo M, Misquitta L, Lee E, Rotmistrovsky K, Greenhut SF, Schaefer CF, Buetow K, Bonner TI, Haussler D, Kent J, Kiekhaus M, Furey T, Brent M, Prange C, Schreiber K, Shapiro N, Bhat NK, Hopkins RF, Hsie F, Driscoll T, Soares MB, Casavant TL, Scheetz TE, Brown-stein MJ, Usdin TB, Toshiyuki S, Carninci P, Piao Y, Dudekula DB, Ko MS, Kawakami K, Suzuki Y, Sugano S, Gruber CE, Smith MR, Simmons B, Moore T, Waterman R, Johnson SL, Ruan Y, Wei CL, Mathavan S, Gunaratne PH, Wu J, Garcia AM, Hulyk SW, Fuh E, Yuan Y, Sneed A, Kowis C, Hodgson A, Muzny DM, McPherson J, Gibbs RA, Fahey J, Helton E, Ketteman M, Madan A, Rodrigues S, Sanchez A, Whiting M, Madari A, Young AC, Wetherby KD, Granite SJ, Kwong PN, Brinkley CP, Pearson RL, Bouffard GG, Blakesly RW, Green ED, Dickson MC, Rodriguez AC, Grimwood J, Schmutz J, Myers RM, Butterfield YS, Griffith M, Griffith OL, Krzywinski MI, Liao N, Morin R, Palmquist D, Petrescu AS, Skalska U, Smailus DE, Stott JM, Schnerch A, Schein JE, Jones SJ, Holt RA, Baross A, Marra MA, Clifton S, Makowski KA, Bosak S, Malek J: The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC). Genome Res. 2004 Oct;14(10B):2121-7. [PubMed:15489334 ]
  2. Deloukas P, Matthews LH, Ashurst J, Burton J, Gilbert JG, Jones M, Stavrides G, Almeida JP, Babbage AK, Bagguley CL, Bailey J, Barlow KF, Bates KN, Beard LM, Beare DM, Beasley OP, Bird CP, Blakey SE, Bridgeman AM, Brown AJ, Buck D, Burrill W, Butler AP, Carder C, Carter NP, Chapman JC, Clamp M, Clark G, Clark LN, Clark SY, Clee CM, Clegg S, Cobley VE, Collier RE, Connor R, Corby NR, Coulson A, Coville GJ, Deadman R, Dhami P, Dunn M, Ellington AG, Frankland JA, Fraser A, French L, Garner P, Grafham DV, Griffiths C, Griffiths MN, Gwilliam R, Hall RE, Hammond S, Harley JL, Heath PD, Ho S, Holden JL, Howden PJ, Huckle E, Hunt AR, Hunt SE, Jekosch K, Johnson CM, Johnson D, Kay MP, Kimberley AM, King A, Knights A, Laird GK, Lawlor S, Lehvaslaiho MH, Leversha M, Lloyd C, Lloyd DM, Lovell JD, Marsh VL, Martin SL, McConnachie LJ, McLay K, McMurray AA, Milne S, Mistry D, Moore MJ, Mullikin JC, Nickerson T, Oliver K, Parker A, Patel R, Pearce TA, Peck AI, Phillimore BJ, Prathalingam SR, Plumb RW, Ramsay H, Rice CM, Ross MT, Scott CE, Sehra HK, Shownkeen R, Sims S, Skuce CD, Smith ML, Soderlund C, Steward CA, Sulston JE, Swann M, Sycamore N, Taylor R, Tee L, Thomas DW, Thorpe A, Tracey A, Tromans AC, Vaudin M, Wall M, Wallis JM, Whitehead SL, Whittaker P, Willey DL, Williams L, Williams SA, Wilming L, Wray PW, Hubbard T, Durbin RM, Bentley DR, Beck S, Rogers J: The DNA sequence and comparative analysis of human chromosome 20. Nature. 2001 Dec 20-27;414(6866):865-71. [PubMed:11780052 ]
  3. Sausville E, Carney D, Battey J: The human vasopressin gene is linked to the oxytocin gene and is selectively expressed in a cultured lung cancer cell line. J Biol Chem. 1985 Aug 25;260(18):10236-41. [PubMed:2991279 ]
  4. Rehbein M, Hillers M, Mohr E, Ivell R, Morley S, Schmale H, Richter D: The neurohypophyseal hormones vasopressin and oxytocin. Precursor structure, synthesis and regulation. Biol Chem Hoppe Seyler. 1986 Aug;367(8):695-704. [PubMed:3768139 ]
  5. Mohr E, Hillers M, Ivell R, Haulica ID, Richter D: Expression of the vasopressin and oxytocin genes in human hypothalami. FEBS Lett. 1985 Nov 25;193(1):12-6. [PubMed:4065330 ]
  6. Chauvet MT, Hurpet D, Chauvet J, Acher R: Identification of human neurophysins: complete amino acid sequences of MSEL- and VLDV-neurophysins. Proc Natl Acad Sci U S A. 1983 May;80(10):2839-43. [PubMed:6574452 ]
  7. Ivell R, Furuya K, Brackmann B, Dawood Y, Khan-Dawood F: Expression of the oxytocin and vasopressin genes in human and baboon gonadal tissues. Endocrinology. 1990 Dec;127(6):2990-6. [PubMed:2249637 ]
  8. Schlesinger DH, Audhya TK: A comparative study of mammalian neurophysin protein sequences. FEBS Lett. 1981 Jun 15;128(2):325-8. [PubMed:7262323 ]
  9. LIGHT A, DU VIGNEAUD V: On the nature of oxytocin and vasopressin from human pituitary. Proc Soc Exp Biol Med. 1958 Aug-Sep;98(4):692-6. [PubMed:13591312 ]