BUDDY-system is a web service to obtain a dataset of ligand bound-state and unbound-state protein structure pairs. BUDDY-system receives a dataset as input consisting of a list of either ligand bound-state (holo) protein structures, unbound-state (apo) protein structures, or ligands. And users can select several options to be used in making a dataset.

BUDDY-system is currently unavailable.

M. Morita, T. Terada, S. Nakamura, K. Shimizu. BUDDY-system: A web site for constructing a dataset of protein pairs between ligand-bound and unbound states. BMC Res Notes, 4, 143 (2011)