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

_ stats: contacts=9 Nring=4 specif=0.44
_ PDBs:  1:3u6p_A,2:3gpu_A,3:6fl1_A,4:6tc9_A,5:1k3x_A,6:5itu_A,7:6lwd_G,
_ -lnE:  1:30.8,2:30.8,3:29.7,4:29.5,5:29.1,6:21.4,7:18.7,
_        1 2 3 4 5 6 7
0031 I  ------RT------
0074 R* RGRART--QA----
0075 M  MG--MTMGLGMGMG
0076 E  --------YA----
0109 V  ----------ITIT
0110 R* RCRGRCRC--RCRC
0112 F* FCFTFAFC--FGFG
0238 A  ----------HG--
0240 R* RGRARTRTRGRGRG