Matrix of similar interfaces for 3D-footprint entry 3w99_F

_ stats: contacts=2 Nring=1 specif=0.50
_ PDBs:  1:8he5_a,2:8siy_G,
_ -lnE:  1:10.3,2:10.1,
_        1 2
0013 P  LG--
0026 R* RART