Figure 2From: GPR17: Molecular modeling and dynamics studies of the 3-D structure and purinergic ligand binding features in comparison with P2Y receptorsMultiple sequences alignment. The two pair of conserved cysteines discussed in the text are highlighted in red. A conserved disulphide bridge links Cys104 (EL2) and Cys181 (TM3); Cys23 (Nt) and Cys269 (EL3) form an additional disulphide bridge that seems to be a peculiar feature of a restricted subgroup of GPCRs among which GPR17, P2Y and CysLT receptors. See supplementary material for the full alignment.Back to article page