Matrix of similar interfaces for 3D-footprint entry 1r8d_B

_ stats: contacts=6 Nring=4 specif=0.67
_ PDBs:  1:5d8c_A,2:5i44_I,3:7ckq_G,
_ -lnE:  1:12.1,2:9.7,3:7.2,
_        1 2 3
0016 R* YTKGKG
0019 H* RTRTRT
0020 H* FC--YG
0023 N  KG----
0037 Y* ----YC
0038 R  ----RT