Matrix of similar interfaces for 3D-footprint entry 4qtr_D

_ stats: contacts=6 Nring=2 specif=0.33
_ PDBs:  1:8ejp_B,2:8b4b_W,
_ -lnE:  1:7.8,2:7.1,
_        1 2
0039 Q  --ST
0041 K  --TA
0042 I* VTQC
0045 Q  QTST
0046 N* NA--
0050 K  RG--