_ stats: contacts=5 Nring=3 specif=0.60 _ PDBs: 1:5x6g_A,2:6tbz_A, _ -lnE: 1:17.4,2:15.3, _ 1 2 0063 D --DC 0065 R* RGRG 0067 Q* QAQC 0070 H HT-- 0072 K* KGKG