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

_ stats: contacts=5 Nring=3 specif=0.60
_ PDBs:  1:1hcq_E,2:5e69_A,
_ -lnE:  1:10.6,2:10.6,
_        1 2
0020 G  EC--
0023 K* KGKA
0024 V* AGVA
0027 K  KG--
0028 R* RGRA