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-Structure paper
| タイトル | Computational Refinement and Validation Protocol for Proteins with Large Variable Regions Applied to Model HIV Env Spike in CD4 and 17b Bound State. |
|---|---|
| ジャーナル・号・ページ | Structure, Vol. 23, Issue 6, Page 1138-1149, Year 2015 |
| 掲載日 | 2015年6月2日 |
著者 | Muhibur Rasheed / Radhakrishna Bettadapura / Chandrajit Bajaj / ![]() |
| PubMed 要旨 | Envelope glycoprotein gp120 of HIV-1 possesses several variable regions; their precise structure has been difficult to establish. We report a new model of gp120, in complex with antibodies CD4 and ...Envelope glycoprotein gp120 of HIV-1 possesses several variable regions; their precise structure has been difficult to establish. We report a new model of gp120, in complex with antibodies CD4 and 17b, complete with its variable regions. The model was produced by a computational protocol that uses cryo-electron microscopy (EM) maps, atomic-resolution structures of the core, and information on binding interactions. Our model has excellent fit with EMD: 5020, is stereochemically and energetically favorable, and has the expected binding interfaces. Comparison of the ternary arrangement of the loops in this model with those bound to PGT122 and PGV04 suggested a possible motion of the V1V2 away from the CCR5 binding site and toward CD4. Our study also revealed that the CD4-bound state of the V1V2 loop is not optimal for gp120 bound with several neutralizing antibodies. |
リンク | Structure / PubMed:26039348 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 20 Å |
| 構造データ | ![]() PDB-3j70: |
| 由来 |
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キーワード | VIRAL PROTEIN/IMMUNE SYSTEM / gp120 / V1V2 / CD4 / 17b / VIRAL PROTEIN-IMMUNE SYSTEM complex |
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著者
リンク
homo sapiens (ヒト)
human immunodeficiency virus 1 (ヒト免疫不全ウイルス)
キーワード