HCV EI protein glycosylation sites.
A. The HCV E1 protein of Pakistani origin showing 5 glycosylation sites highlighted in red at positions 5, 18, 43, 114 and 134. B. Multiple sequence alignment showing conserved glycosylation sites at positions 5, 18, 43, 114 and 134 in the HCV E1 proteins isolated from the different region of the world.