Chorionic gonadotropin beta

Choriogonadotropin subunit beta (CG-beta) also known as chorionic gonadotrophin chain beta is a is_associated_with::protein that in humans is encoded by the CGB is_associated_with::gene.

This gene is a member of the is_associated_with::glycoprotein hormone beta chain family and encodes the beta 3 subunit of chorionic gonadotropin (CG). Glycoprotein hormones are heterodimers consisting of a common alpha subunit and a unique beta subunit which confers biological specificity. CG is produced by the is_associated_with::trophoblastic cells of the is_associated_with::placenta and stimulates the is_associated_with::ovaries to synthesize the steroids that are essential for the maintenance of pregnancy. The beta subunit of CG is encoded by 6 genes which are arranged in tandem and inverted pairs on chromosome 19q13.3 and contiguous with the luteinizing hormone beta subunit gene.