Human chorionic gonadotropin (hCG) is a heterodimer Authored: Jassal, B, 2008-10-01 13:18:42 Edited: Jassal, B, 2008-11-17 10:09:58 Human chorionic gonadotropin (hCG) is a glycoprotein hormone produced in pregnancy. Its role is to maintain progesterone production by preventing the disintegration of the corpus luteum of the ovary and thus sustain the growing foetus. hCG is made up of a common alpha subunit and a unique beta subunit, bound by six intrachain disulfide bonds, required for dimer formation (Beebe JS et al, 1990) Pubmed1688430 Reactome Database ID Release 43378978 Reactome, http://www.reactome.org ReactomeREACT_15432 Reviewed: D'Eustachio, P, 2008-11-29 15:53:45 Gonadotropin