How do you study computationally protein-ligand interactions in orphan receptors(receptors with unidentified endogenous ligands) when experimentally ligand binding is proved?
I am no expert in ONR, but with a structure (xr, nmr), I would simulate binding with a probe (e.g. the common scaffold or hormones or opiates);
In case that receptor is specific to a cell type, the choice of probe may be reduced;
I would start with a reduced model consisting of regions D, E and F.
AutoDockVina is a popular docking program to do such tests.
Thanx Cat for your reply
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