_ stats: contacts=5 Nring=4 specif=0.80 _ PDBs: 1:5e69_A,2:1hcq_E, _ -lnE: 1:11.1,2:11.0, _ 1 2 0024 E* --EC 0027 K* KAKG 0028 G VAAG 0031 R* --KG 0032 R* RARG