Matrix of similar interfaces for 3D-footprint entry 6l6q_B

_ stats: contacts=5 Nring=4 specif=0.80
_ PDBs:  1:2a66_A,
_ -lnE:  1:11.6,
_        1
0019 E* EC
0022 K* KG
0026 K* KG
0027 R* RG
0077 K  RT