Matrix of similar interfaces for 3D-footprint entry 6ar1_A

_ stats: contacts=3 Nring=1 specif=0.33
_ PDBs:  1:8oz7_A,2:4hkq_A,3:8r0s_A,
_ -lnE:  1:17.7,2:15.9,3:14.3,
_        1 2 3
0189 Q  ----FA
0195 P  --PG--
0219 Y* YAYT--