Matrix of similar interfaces for 3D-footprint entry 3g9m_B

_ stats: contacts=5 Nring=3 specif=0.60
_ PDBs:  1:5e69_A,2:1hcq_E,
_ -lnE:  1:10.9,2:10.4,
_        1 2
0020 G  --EC
0023 K* KAKG
0024 V* VAAG
0027 K  --KG
0028 R* RARG