_ stats: contacts=2 Nring=2 specif=1.00 _ PDBs: 1:8q9r_F,2:7xuz_H,3:8q9n_B, _ -lnE: 1:8.2,2:8.2,3:8.1, _ 1 2 3 0001 R* RTRART 0021 K* KTKAKA