Glycoprotein 120, SU, surface protein gp120, env polyprotein, envelope glycoprotein gp16
The original antibody was isolated from a combinatorial Fab phage display library generated from a long term asymptomatic male infected with clade B strain of HIV-1. Later on the Fab antibody was converted to an IgG1 by cloning the variable regions into a vector for mammalian expression.