_ stats: contacts=4 Nring=3 specif=0.75 _ PDBs: 1:6ldi_G,2:1r8e_A, _ -lnE: 1:10.5,2:9.2, _ 1 2 0025 R* KGKC 0028 R* RTRT 0029 Y FC-- 0045 R* YGYC