Matrix of similar interfaces for 3D-footprint entry 8hbm_B

_ stats: contacts=5 Nring=4 specif=0.80
_ PDBs:  1:4umm_E,2:5krb_G,
_ -lnE:  1:11.1,2:10.7,
_        1 2
0021 E* EAEC
0024 K  KGKG
0028 R* RT--
0029 R* RTRA
0053 R* RT--