Matrix of similar interfaces for 3D-footprint entry 8b4b_W

_ stats: contacts=5 Nring=2 specif=0.40
_ PDBs:  1:6fqq_E,2:6fqp_B,
_ -lnE:  1:7.2,2:7.0,
_        1 2
0072 Q* NCNC
0075 S* ITIC
0076 T  NANA
0079 K  RGRG
0080 M  RGRG