Matrix of similar interfaces for 3D-footprint entry 3gpu_A

_ stats: contacts=6 Nring=4 specif=0.67
_ PDBs:  1:4pd2_A,
_ -lnE:  1:30.0,
_        1
0074 R* RT
0075 M  MT
0076 E  ET
0110 R* RC
0112 F* FA
0240 R* RT