[English] 日本語

- PDB-6nqd: Cryo-EM structure of T/F100 SOSIP.664 HIV-1 Env trimer in complex... -
+
Open data
-
Basic information
Entry | Database: PDB / ID: 6nqd | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Title | Cryo-EM structure of T/F100 SOSIP.664 HIV-1 Env trimer in complex with 8ANC195 Fab | |||||||||
![]() |
| |||||||||
![]() | VIRAL PROTEIN/IMMUNE SYSTEM / HIV-1 / Env / trimer / VIRAL PROTEIN-IMMUNE SYSTEM complex | |||||||||
Function / homology | ![]() immunoglobulin complex / positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / adaptive immune response / viral protein processing / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / : ...immunoglobulin complex / positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / adaptive immune response / viral protein processing / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / : / viral envelope / virion attachment to host cell / host cell plasma membrane / virion membrane / structural molecule activity / extracellular region / membrane / plasma membrane Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.9 Å | |||||||||
![]() | Fang, Q. / Rossmann, M.G. | |||||||||
Funding support | ![]()
| |||||||||
![]() | ![]() Title: A sequestered fusion peptide in the structure of an HIV-1 transmitted founder envelope trimer. Authors: Neeti Ananthaswamy / Qianglin Fang / Wadad AlSalmi / Swati Jain / Zhenguo Chen / Thomas Klose / Yingyuan Sun / Yue Liu / Marthandan Mahalingam / Subhash Chand / Sodsai Tovanabutra / Merlin L ...Authors: Neeti Ananthaswamy / Qianglin Fang / Wadad AlSalmi / Swati Jain / Zhenguo Chen / Thomas Klose / Yingyuan Sun / Yue Liu / Marthandan Mahalingam / Subhash Chand / Sodsai Tovanabutra / Merlin L Robb / Michael G Rossmann / Venigalla B Rao / ![]() ![]() Abstract: The envelope protein of human immunodeficiency virus-1 (HIV-1) and its fusion peptide are essential for cell entry and vaccine design. Here, we describe the 3.9-Å resolution structure of an envelope ...The envelope protein of human immunodeficiency virus-1 (HIV-1) and its fusion peptide are essential for cell entry and vaccine design. Here, we describe the 3.9-Å resolution structure of an envelope protein trimer from a very early transmitted founder virus (CRF01_AE T/F100) complexed with Fab from the broadly neutralizing antibody (bNAb) 8ANC195. The overall T/F100 trimer structure is similar to other reported "closed" state prefusion trimer structures. In contrast, the fusion peptide, which is exposed to solvent in reported closed structures, is sequestered (buried) in the hydrophobic core of the T/F100 trimer. A buried conformation has previously been observed in "open" state structures formed after CD4 receptor binding. The T/F100 trimer binds poorly to bNAbs including the fusion peptide-specific bNAbs PGT151 and VRC34.01. The T/F100 structure might represent a prefusion state, intermediate between the closed and open states. These observations are relevant to mechanisms of HIV-1 transmission and vaccine design. | |||||||||
History |
|
-
Structure visualization
Movie |
![]() |
---|---|
Structure viewer | Molecule: ![]() ![]() |
-
Downloads & links
-
Download
PDBx/mmCIF format | ![]() | 478.2 KB | Display | ![]() |
---|---|---|---|---|
PDB format | ![]() | 383.1 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 3.3 MB | Display | ![]() |
---|---|---|---|---|
Full document | ![]() | 3.3 MB | Display | |
Data in XML | ![]() | 79.7 KB | Display | |
Data in CIF | ![]() | 115.9 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 0485MC M: map data used to model this data C: citing same article ( |
---|---|
Similar structure data |
-
Links
-
Assembly
Deposited unit | ![]()
|
---|---|
1 |
|
-
Components
-Protein , 2 types, 6 molecules AEIBFJ
#1: Protein | Mass: 54739.133 Da / Num. of mol.: 3 / Fragment: UNP residues 29-508 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #2: Protein | Mass: 20333.879 Da / Num. of mol.: 3 / Fragment: UNP residues 513-665 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
---|
-Antibody , 2 types, 6 molecules CGKDHL
#3: Antibody | Mass: 26153.283 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #4: Antibody | Mass: 23460.047 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
---|
-Sugars , 6 types, 63 molecules 
#5: Polysaccharide | Source method: isolated from a genetically manipulated source #6: Polysaccharide | Source method: isolated from a genetically manipulated source #7: Polysaccharide | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose Source method: isolated from a genetically manipulated source #8: Polysaccharide | Source method: isolated from a genetically manipulated source #9: Polysaccharide | Source method: isolated from a genetically manipulated source #10: Sugar | ChemComp-NAG / |
---|
-Details
Has protein modification | Y |
---|
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
---|---|
EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-
Sample preparation
Component |
| ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Source (natural) |
| ||||||||||||||||||||||||
Source (recombinant) |
| ||||||||||||||||||||||||
Buffer solution | pH: 8 | ||||||||||||||||||||||||
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||
Specimen support | Details: unspecified | ||||||||||||||||||||||||
Vitrification | Cryogen name: ETHANE |
-
Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
---|---|
Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 64 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
-
Processing
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
---|---|
3D reconstruction | Resolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 170716 / Symmetry type: POINT |