Matrix of similar interfaces for 3D-footprint entry 1a3q_A

_ stats: contacts=8 Nring=7 specif=0.88
_ PDBs:  1:2o61_B,2:1svc_P,
_ -lnE:  1:35.1,2:34.5,
_        1 2
0015 R* RGRC
0017 R* RGRC
0018 Y* YTYC
0020 C* CT--
0021 E* ECEC
0025 H* HGHC
0178 K* --KT
0240 K  --RG