ジャーナル: Science / 年: 2011 タイトル: A potent and broad neutralizing antibody recognizes and penetrates the HIV glycan shield. 著者: Robert Pejchal / Katie J Doores / Laura M Walker / Reza Khayat / Po-Ssu Huang / Sheng-Kai Wang / Robyn L Stanfield / Jean-Philippe Julien / Alejandra Ramos / Max Crispin / Rafael Depetris / ...著者: Robert Pejchal / Katie J Doores / Laura M Walker / Reza Khayat / Po-Ssu Huang / Sheng-Kai Wang / Robyn L Stanfield / Jean-Philippe Julien / Alejandra Ramos / Max Crispin / Rafael Depetris / Umesh Katpally / Andre Marozsan / Albert Cupo / Sebastien Maloveste / Yan Liu / Ryan McBride / Yukishige Ito / Rogier W Sanders / Cassandra Ogohara / James C Paulson / Ten Feizi / Christopher N Scanlan / Chi-Huey Wong / John P Moore / William C Olson / Andrew B Ward / Pascal Poignard / William R Schief / Dennis R Burton / Ian A Wilson / 要旨: The HIV envelope (Env) protein gp120 is protected from antibody recognition by a dense glycan shield. However, several of the recently identified PGT broadly neutralizing antibodies appear to ...The HIV envelope (Env) protein gp120 is protected from antibody recognition by a dense glycan shield. However, several of the recently identified PGT broadly neutralizing antibodies appear to interact directly with the HIV glycan coat. Crystal structures of antigen-binding fragments (Fabs) PGT 127 and 128 with Man(9) at 1.65 and 1.29 angstrom resolution, respectively, and glycan binding data delineate a specific high mannose-binding site. Fab PGT 128 complexed with a fully glycosylated gp120 outer domain at 3.25 angstroms reveals that the antibody penetrates the glycan shield and recognizes two conserved glycans as well as a short β-strand segment of the gp120 V3 loop, accounting for its high binding affinity and broad specificity. Furthermore, our data suggest that the high neutralization potency of PGT 127 and 128 immunoglobulin Gs may be mediated by cross-linking Env trimers on the viral surface.
全体 : HIV spike protein 664G construct in complex with Fab fragment of ...
全体
名称: HIV spike protein 664G construct in complex with Fab fragment of PGT128 monoclonal antibody
要素
試料: HIV spike protein 664G construct in complex with Fab fragment of PGT128 monoclonal antibody
タンパク質・ペプチド: Human immunodeficiency virus envelope protein
タンパク質・ペプチド: PGT128 monoclonal antibody fragment
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超分子 #1000: HIV spike protein 664G construct in complex with Fab fragment of ...
超分子
名称: HIV spike protein 664G construct in complex with Fab fragment of PGT128 monoclonal antibody タイプ: sample / ID: 1000 / 詳細: The sample was monodisperse / 集合状態: One trimer binds to three Fabs / Number unique components: 2
分子 #1: Human immunodeficiency virus envelope protein
分子
名称: Human immunodeficiency virus envelope protein / タイプ: protein_or_peptide / ID: 1 / Name.synonym: Spike protein 詳細: The PGT128 Fab was complexed to the spike protein, partially deglycosylated, purified using size exclusion chromatography, and concentrated. コピー数: 3 / 集合状態: Trimer / 組換発現: Yes