Matrix of similar interfaces for 3D-footprint entry 7xrc_C

_ stats: contacts=5 Nring=4 specif=0.80
_ PDBs:  1:6fqq_E,2:6fqp_B,
_ -lnE:  1:7.9,2:7.6,
_        1 2
0117 V* NCNC
0120 C* ITIC
0121 N* NANA
0124 Q* RGRG
0125 K  RGRG