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Cited by 553

The DOI matches its Crossref record; 63 of the 63 references it cites were found in a registry or an index.

The Mannose-Dependent Epitope for Neutralizing Antibody 2G12 on Human Immunodeficiency Virus Type 1 Glycoprotein gp120

Open access
Sanders, Rogier W., Venturi, Miro, Schiffner, Linnea, Kalyanaraman, Roopa, Katinger, Hermann, Lloyd, Kenneth O., Kwong, Peter D., Moore, John P.·2002·Journal of Virology

Abstract

We have analyzed the unique epitope for the broadly neutralizing human monoclonal antibody (MAb) 2G12 on the gp120 surface glycoprotein of human immunodeficiency virus type 1 (HIV-1). Sequence analysis, focusing on the conservation of relevant residues across multiple HIV-1 isolates, refined the epitope that was defined previously by substitutional mutagenesis (A. Trkola, M. Purtscher, T. Muster, C. Ballaun, A. Buchacher, N. Sullivan, K. Srinivasan, J. Sodroski, J. P. Moore, and H. Katinger, J. Virol. 70:1100-1108, 1996). In a biochemical study, we digested recombinant gp120 with various glycosidase enzymes of known specificities and showed that the 2G12 epitope is lost when gp120 is treated with mannosidases. Computational analyses were used to position the epitope in the context of the virion-associated envelope glycoprotein complex, to determine the variability of the surrounding surface, and to calculate the surface accessibility of possible glycan- and polypeptide-epitope components. Together, these analyses suggest that the 2G12 epitope is centered on the high-mannose and/or hybrid glycans of residues 295, 332, and 392, with peripheral glycans from 386 and 448 on either flank. The epitope is mannose dependent and composed primarily of carbohydrate, with probably no direct involvement of the gp120 polypeptide surface. It resides on a face orthogonal to the CD4 binding face, on a surface proximal to, but distinct from, that implicated in coreceptor binding. Its conservation amidst an otherwise highly variable gp120 surface suggests a functional role for the 2G12 binding site, perhaps related to the mannose-dependent attachment of HIV-1 to DC-SIGN or related lectins that facilitate virus entry into susceptible target cells.

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Crossref · 10.1128/jvi.76.14.7293-7305.2002

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Metadata

Authors
Sanders, R. W., Venturi, M., Schiffner, L., Kalyanaraman, R., Katinger, H., Lloyd, K. O., Kwong, P. D., & Moore, J. P.
Venue
Journal of Virology
Published
2002-07-15
Volume
76
Issue
14
Pages
7293-7305
ISSN
  • 0022-538X (ISSN-L)
  • 1098-5514
OpenAlex
W2163558461
Cited by
553
References
63
FWCI
9.40
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: The Mannose-Dependent Epitope for Neutralizing Antibody 2G12 on Human Immunodeficiency Virus Type 1 Glycoprotein gp120. https://app.cochat.ai/papers/10.1128/jvi.76.14.7293-7305.2002
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Sanders, R. W., Venturi, M., Schiffner, L., Kalyanaraman, R., Katinger, H., Lloyd, K. O., Kwong, P. D., & Moore, J. P. (2002). The Mannose-Dependent Epitope for Neutralizing Antibody 2G12 on Human Immunodeficiency Virus Type 1 Glycoprotein gp120. Journal of Virology. https://doi.org/10.1128/jvi.76.14.7293-7305.2002

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