atp pka pdb showing distinct binding subdomains
binding gatekeeper residue calcium atp bound dependent kinase structure gondii toxoplasma cambridge
affinity atp binding p2x site labeling receptors labels label frontiersin ncs reagents exploring labelling figure fncel residues
atp protein kinases model depicted pocket hinge hydrophobic diagram lining residues
ligand binding rotation receptor transmembrane receptors ichiro maruyama okinawa