Matrix of similar interfaces for 3D-footprint entry 5krb_G

_ stats: contacts=5 Nring=3 specif=0.60
_ PDBs:  1:5e69_A,2:1hcq_E,
_ -lnE:  1:10.7,2:10.2,
_        1 2
0019 E* --EC
0022 K* KAKG
0023 G  VAAG
0026 K  --KG
0027 R* RARG