Matrix of similar interfaces for 3D-footprint entry 1a66_A

_ stats: contacts=5 Nring=4 specif=0.80
_ PDBs:  1:2o61_B,
_ -lnE:  1:10.6,
_        1
0025 R* RG
0027 R* RG
0028 Y* YT
0030 T  CT
0031 E* EC