Matrix of similar interfaces for 3D-footprint entry 2xcr_U

_ stats: contacts=14 Nring=3 specif=0.21
_ PDBs:  1:9foy_A,2:8qqi_C,3:1gd2_G,
_ -lnE:  1:68.1,2:51.7,3:7.5,
_        1 2 3
0041 R  RT----
0043 K* KG----
0251 Y  YA----
0259 R  RT----
0311 S* SA----
0401 I* ICIC--
0576 E  ----RG
0579 V  ----QG
0580 H  ----NA
0581 Y  ----RT
0583 E  ----AG
0584 H  ----QT
0587 T  ----FT
0588 V  ----RG