Matrix of similar interfaces for 3D-footprint entry 6u9q_A

_ stats: contacts=6 Nring=5 specif=0.83
_ PDBs:  1:8cuc_F,
_ -lnE:  1:8.0,
_        1
0015 K  ST
0018 S* SA
0022 V* IT
0044 Q* TT
0047 K* NA
0050 R* VT