Matrix of similar interfaces for 3D-footprint entry 4pu3_C

_ stats: contacts=6 Nring=4 specif=0.67
_ PDBs:  1:1lrr_A,2:1o4x_A,
_ -lnE:  1:7.2,2:7.2,
_        1 2
0035 T* --SG
0036 K* --QA
0037 K* --TT
0041 R  --RG
0047 D  NT--
0049 Y* NT--