what are the key differences between the receptor for lh and estrogen?
As glycoprotein hormones, LH and hCG share a common 92-amino acid α-subunit, with the unique functions and receptor-binding capacity of each of these hormones stemming from differences among the β subunits. ... HCG is more potent than LH due to its higher receptor-binding affinity and a longer circulatory half-life.