_ stats: contacts=2 Nring=2 specif=1.00 _ PDBs: 1:8q9n_B,2:8q9r_F,3:7xuz_H, _ -lnE: 1:13.6,2:13.5,3:13.4, _ 1 2 3 0001 R* RTRTRA 0021 K* KAKTKA