_ stats: contacts=4 Nring=3 specif=0.75 _ PDBs: 1:6ldi_G,2:1r8e_A, _ -lnE: 1:9.9,2:9.9, _ 1 2 0014 K* KGKC 0017 Q* RTRT 0018 R* FC-- 0034 H YGYC