Matrix of similar interfaces for 3D-footprint entry 7ccr_H

_ stats: contacts=4 Nring=1 specif=0.25
_ PDBs:  1:7v90_H,2:5kgf_C,3:5gt0_C,4:3x1t_G,5:7jzv_N,6:7e9c_G,7:5gxq_A,
_ -lnE:  1:13.8,2:11.2,3:10.7,4:10.1,5:10.1,6:9.9,7:9.8,
_        1 2 3 4 5 6 7
0001 R* RG------------
0007 I  ------------LT
0021 G  --RGRTRARTRGRC
0056 T  ------RT------