Matrix of similar interfaces for 3D-footprint entry 7c9a_B

_ stats: contacts=3 Nring=2 specif=0.67
_ PDBs:  1:8amd_A,2:8dtp_F,
_ -lnE:  1:23.2,2:20.1,
_        1 2
0216 L* VTNT
0221 M  RT--
0249 A* ET--