High -purity oxytocin yog peptide hormone secreted los ntawm lub caj pas pituitary tom qab. Synthesized nyob rau hauv lub paraventricular thiab supraoptic nuclei ntawm lub hypothalamus, nws muaj cuaj amino acids thiab raug thauj mus rau lub neurohypophysis rau tso tawm ntawm tus nqi ntawm 2 mus rau 3 millimeters ib hnub twg. Cov cysteine (Cys) residues nyob rau ntawm txoj hauj lwm 1 thiab 6 tsim ib tug cyclic hexapeptide qauv ntawm ib tug disulfide daim ntawv cog lus.
Cov qauv tshuaj ntawm oxytocin hauv tib neeg thiab tsiaj txhu feem ntau yog raws li hauv qab no:
Cysteine -Tyrosine-Isoleucine-Glutamine-Aspartic Acid-Cysteine-Proline-Leucine-Glycine-NH2
Cov qauv ntawm oxytocin zoo ib yam li cov tshuaj antidiuretic hormone (Cysteine-Tyrosine-Phenylalanine-Glutamine-Aspartic Acid-Cysteine-Proline-Arginine-} .