Matrix of similar interfaces for 3D-footprint entry 3qx3_B

_ stats: contacts=5 Nring=1 specif=0.20
_ PDBs:  1:2o8k_A,
_ -lnE:  1:7.4,
_        1
0257 V  DT
0274 E  RT
0275 Q  RG
0276 A* TT
0279 M  KT