Matrix of similar interfaces for 3D-footprint entry 8rbx_M

_ stats: contacts=7 Nring=1 specif=0.14
_ PDBs:  1:7unc_a,2:7ux9_E,3:7zs9_e,4:7ccr_A,5:6px1_A,6:7y7i_E,7:7e9c_F,
_ PDBs:  8:7nkx_f,9:6a5l_g,10:7yqk_C,11:8upf_G,12:3wkj_D,13:7kbd_C,14:8rbx_V,
_ PDBs:  15:7cvo_A,
_ -lnE:  1:13.4,2:13.4,3:13.4,4:13.4,5:13.4,6:13.0,7:10.7,8:10.6,
_ -lnE:  9:10.1,10:10.1,11:10.1,12:9.9,13:9.9,14:9.9,15:9.7,
_        1 2 3 4 5 6 7 8 9101112131415
0020 L  LA--------QC------------------
0021 P  ----------------------IT------
0023 Q  --------------------------HGKT
0027 R  --------------------------RT--
0038 R* RGRCRTRGRTRGRA--RARCRG--RTRG--
0072 V  --------------KG--------------
0073 T  ----------------RA------------