Matrix of similar interfaces for 3D-footprint entry 6es3_K

_ stats: contacts=5 Nring=4 specif=0.80
_ PDBs:  1:8ejp_B,
_ -lnE:  1:8.1,
_        1
0006 R* RT
0048 I* VT
0051 Q* QT
0052 N* NA
0056 K  RG