Matrix of similar interfaces for 3D-footprint entry 1an4_A

_ stats: contacts=6 Nring=4 specif=0.67
_ PDBs:  1:6g1l_A,2:5nj8_D,
_ -lnE:  1:7.5,2:7.5,
_        1 2
0008 H  HGHG
0009 N  NT--
0011 V* --IT
0012 E* ETEC
0015 R* --RC
0016 R* RGRG