Crystal structure of human FSH bound to FSHFHB
a, b, Ribbon diagram of the complex structure shown in two views related by a 90° rotation about the vertical axis. FSH α-chains and β-chains are in green and cyan, respectively. FSHRHB is in red. The observed N-linked carbohydrates at N52 and N78 of FSH-α, N7 and N24 of FSH-β, and N191 of FSHRHB are in yellow. Disulphide bonds are in black. c, Schematic diagram of the topology of FSHRHB structure. β-Strands are shown as arrows. Red represents strands located at the concave face of FSHRHB; pink represents strands on the convex face.