_ stats: contacts=7 Nring=3 specif=0.43 _ PDBs: 1:7ssa_L, _ -lnE: 1:9.6, _ 1 0008 A HT 0009 H* KT 0011 A VT 0012 I* EC 0015 R RT 0016 Y* RG 0040 K KA