Binding Affinity Data Integrated with RCSB PDB
Binding affinity data from BindingDB have been integrated with the RCSB PDB website. The Ligand Chemical Component section of Structure Summary pages now include binding affinity data from BindingDB, when available (for an example, see an HIV-1 protease dimer complexed with Ritonavir in entry 1hxw). These include binding constants IC50, EC50, Ki, and thermodynamic data Kd, ΔG, ΔH, -TΔS. If multiple experimental values are available for a measurement type, a range is listed. The data are linked to the BindingDB resource.
A new Advanced Search option can be used to find protein-ligand complexes with associated binding affinity data. IC50, EC50, Ki, and Kd must be specified in nM, and thermodynamic data ΔG, ΔH, -TΔS in kJ/mol. To use this option, select the "Binding Affinity" option from under Chemical Components in Advanced Search.
For information about this and other new features, please see the What's New page.