It appears you don't have support to open PDFs in this web browser. To view this file, Open with your PDF reader
Abstract
The membrane-proximal external region (MPER) of HIV-1 envelope glycoprotein (Env) can be targeted by neutralizing antibodies of exceptional breadth. MPER antibodies usually have long, hydrophobic CDRH3s, lack activity as inferred germline precursors, are often from the minor IgG3 subclass, and some are polyreactive, such as 4E10. Here we describe an MPER broadly neutralizing antibody from the major IgG1 subclass, PGZL1, which shares germline V/D-region genes with 4E10, has a shorter CDRH3, and is less polyreactive. A recombinant sublineage variant pan-neutralizes a 130-isolate panel at 1.4 μg/ml (IC50). Notably, a germline revertant with mature CDR3s neutralizes 12% of viruses and still binds MPER after DJ reversion. Crystal structures of lipid-bound PGZL1 variants and cryo-EM reconstruction of an Env-PGZL1 complex reveal how these antibodies recognize MPER and viral membrane. Discovery of common genetic and structural elements among MPER antibodies from different patients suggests that such antibodies could be elicited using carefully designed immunogens.
You have requested "on-the-fly" machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Show full disclaimer
Neither ProQuest nor its licensors make any representations or warranties with respect to the translations. The translations are automatically generated "AS IS" and "AS AVAILABLE" and are not retained in our systems. PROQUEST AND ITS LICENSORS SPECIFICALLY DISCLAIM ANY AND ALL EXPRESS OR IMPLIED WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES FOR AVAILABILITY, ACCURACY, TIMELINESS, COMPLETENESS, NON-INFRINGMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Your use of the translations is subject to all use restrictions contained in your Electronic Products License Agreement and by using the translation functionality you agree to forgo any and all claims against ProQuest or its licensors for your use of the translation functionality and any output derived there from. Hide full disclaimer
Details






1 Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA; CTK Biotech, Inc., Poway, California, USA
2 Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California, USA; International AIDS Vaccine Initiative Neutralizing Antibody Center and the Collaboration for AIDS Vaccine Discovery, The Scripps Research Institute, La Jolla, California, USA; Scripps Consortium for HIV/AIDS Vaccine Development, The Scripps Research Institute, La Jolla, California, USA
3 Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA; Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California, USA
4 Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA; International AIDS Vaccine Initiative Neutralizing Antibody Center and the Collaboration for AIDS Vaccine Discovery, The Scripps Research Institute, La Jolla, California, USA; International AIDS Vaccine Initiative, New York, New York, USA
5 Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California, USA
6 Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA
7 Department of Medicine, University of California, San Diego, California, USA
8 Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA; Departments of Medicine, Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri, USA
9 MRC/UVRI Uganda Research Unit on AIDS, Uganda Virus Research Institute, Entebbe, Uganda
10 St Stephens AIDS Trust, Chelsea and Westminster NHS Foundation Trust, London, UK
11 NRL, St Vincent’s Institute, Melbourne, Victoria, Australia
12 Zambia Emory HIV Research Project, Lusaka, Zambia and Rwanda-Zambia HIV Research Group, Emory University, Atlanta, GA, USA
13 Projet San Francisco, Kigali, Rwanda and the Rwanda-Zambia HIV Research Group, Emory University, Atlanta, GA, USA
14 CeDReS/CHU Treichville, Abidjan, Côte d’Ivoire
15 Kenya AIDS Vaccine Initiative, College of Health Sciences, University of Nairobi, Nairobi, Kenya
16 SUNY Downstate Medical Center, Brooklyn, New York, USA
17 Desmond Tutu HIV Centre, University of Cape Town, Cape Town, South Africa
18 Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
19 Department of Retrovirology, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
20 Rwanda-Zambia HIV Research Group, Emory University, Atlanta, Georgia, USA
21 Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA; International AIDS Vaccine Initiative Neutralizing Antibody Center and the Collaboration for AIDS Vaccine Discovery, The Scripps Research Institute, La Jolla, California, USA; International AIDS Vaccine Initiative, New York, New York, USA; Institut de Biologie Structurale, Université Grenoble Alpes, Commissariat a l’Energie Atomique, Centre National de Recherche Scientifique and Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
22 Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA; International AIDS Vaccine Initiative Neutralizing Antibody Center and the Collaboration for AIDS Vaccine Discovery, The Scripps Research Institute, La Jolla, California, USA; Scripps Consortium for HIV/AIDS Vaccine Development, The Scripps Research Institute, La Jolla, California, USA; Ragon Institute of Massachusetts General Hospital, MIT and Harvard, Cambridge, Massachussetts, USA
23 Department of Medicine, University of California, San Diego, California, USA; Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
24 Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California, USA; International AIDS Vaccine Initiative Neutralizing Antibody Center and the Collaboration for AIDS Vaccine Discovery, The Scripps Research Institute, La Jolla, California, USA; Scripps Consortium for HIV/AIDS Vaccine Development, The Scripps Research Institute, La Jolla, California, USA; Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, California, USA