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Updated: Jul 20, 2026

Conformational Evaluation of HIV-1 Trimeric Envelope Glycoproteins Using a Cell-based ELISA Assay
Published on: September 14, 2014
Antibody binding is a dominant determinant of the efficiency of human immunodeficiency virus type 1 neutralization
Xinzhen Yang1, Inna Lipchina, Simon Cocklin
1Beth Israel Deaconess Medical Center, 330 Brookline Avenue, R.E. 213A, Boston, MA 02215, USA. xyang1@bidmc.harvard.edu
Abstract:
Primary and laboratory-adapted variants of human immunodeficiency virus type 1 (HIV-1) exhibit a wide range of sensitivities to neutralization by antibodies directed against the viral envelope glycoproteins. An antibody directed against an artificial FLAG epitope inserted into the envelope glycoproteins of three HIV-1 isolates with vastly different neutralization sensitivities inhibited all three viruses equivalently. Thus, naturally occurring HIV-1 isolates that are neutralization resistant are not necessarily more impervious to the inhibitory consequences of bound antibody. Moreover, the binding affinity of the anti-FLAG antibody correlated with neutralizing potency, underscoring the dominant impact on neutralization of antibody binding to the envelope glycoproteins.
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