<p>The drawing of CD81 LEL (PDB #1g8q) was generated in MolMol. Four helices (A, C, D, E) are drawn in red while the B helix, crucial for <i>P. yoelii</i> infection is displayed in blue. The black balls indicate the CCG ubiquitous motif. The crucial D137 as well as D138 and D139 are in purple while V135 and V136 are in royal blue. Residues V146, T149, F150, T153 and L154 putatively involved in contact with the SEL are indicated in dark blue. T163, F186 and D196 residues, in yellow, have been reported to play a role in the HCV E2 glycoprotein binding to CD81-LEL. Residues V135, V136, T163, F186 and D196 projected backward, behind the drawing plane. The two disulfides bridges are colored light coral. Hydrophilic residues K144, K148 and E152 located on the top of the B helix are in green. The SEL, in cyan, is in front of the drawing plane.</p
