- EMDB-23254: CryoEM structure of the HCMV Trimer gHgLgO in complex with human ... -
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Basic information
Entry
Database: EMDB / ID: EMD-23254
Title
CryoEM structure of the HCMV Trimer gHgLgO in complex with human Transforming growth factor beta receptor type 3 and neutralizing fabs 13H11 and MSL-109
Map data
Composite map of Trimer-TGFBR3 complex bound to fabs 13H11 and Msl-109 used for model refinements
Sample
Complex: HCMV Trimer gHgLgO bound to human receptor TGFbR3 and neutralizing fabs 13H11 and MSL-109
Complex: HCMV Trimer gHgLgO
Protein or peptide: Envelope glycoprotein H
Protein or peptide: Envelope glycoprotein L
Protein or peptide: Envelope glycoprotein O
Complex: neutralizing fabs 13H11 and MSL-109
Protein or peptide: Transforming growth factor beta receptor type 3
Protein or peptide: Fab 13H11 light chain
Protein or peptide: Fab 13H11 heavy chain
Protein or peptide: Fab MSL-109 light chain
Protein or peptide: Fab MSL-109 heavy chain
Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
Keywords
virus / receptor / complex / neutralizing antibody / VIRAL PROTEIN / VIRAL PROTEIN-Immune System complex
Function / homology
Function and homology information
response to luteinizing hormone / transforming growth factor beta receptor complex assembly / epicardium-derived cardiac fibroblast cell development / inhibin-betaglycan-ActRII complex / muscular septum morphogenesis / TGFBR3 regulates activin signaling / definitive erythrocyte differentiation / TGFBR3 regulates FGF2 signaling / response to follicle-stimulating hormone / BMP binding ...response to luteinizing hormone / transforming growth factor beta receptor complex assembly / epicardium-derived cardiac fibroblast cell development / inhibin-betaglycan-ActRII complex / muscular septum morphogenesis / TGFBR3 regulates activin signaling / definitive erythrocyte differentiation / TGFBR3 regulates FGF2 signaling / response to follicle-stimulating hormone / BMP binding / vasculogenesis involved in coronary vascular morphogenesis / transforming growth factor beta receptor activity / TGFBR3 PTM regulation / ventricular compact myocardium morphogenesis / regulation of transforming growth factor beta receptor signaling pathway / secondary palate development / TGFBR3 regulates TGF-beta signaling / cardiac epithelial to mesenchymal transition / transforming growth factor beta receptor binding / type II transforming growth factor beta receptor binding / transforming growth factor beta receptor activity, type III / activin binding / heart trabecula morphogenesis / FGFR1b ligand binding and activation / FGFR1c ligand binding and activation / Signaling by BMP / Signaling by Activin / glycosaminoglycan binding / heart trabecula formation / definitive hemopoiesis / TGFBR3 expression / transforming growth factor beta binding / negative regulation of extracellular matrix assembly / cardiac muscle cell proliferation / positive regulation of cell migration involved in sprouting angiogenesis / ventricular cardiac muscle tissue morphogenesis / ventricular septum morphogenesis / negative regulation of SMAD protein signal transduction / positive regulation of transforming growth factor beta receptor signaling pathway / SMAD binding / fibroblast growth factor binding / outflow tract morphogenesis / TGF-beta receptor signaling activates SMADs / positive regulation of SMAD protein signal transduction / epithelial to mesenchymal transition / BMP signaling pathway / animal organ regeneration / heart morphogenesis / coreceptor activity / positive regulation of cardiac muscle cell proliferation / response to prostaglandin E / negative regulation of canonical NF-kappaB signal transduction / transforming growth factor beta receptor signaling pathway / negative regulation of cell migration / host cell endosome membrane / liver development / HCMV Late Events / PDZ domain binding / negative regulation of transforming growth factor beta receptor signaling pathway / HCMV Early Events / negative regulation of epithelial cell proliferation / transmembrane signaling receptor activity / cell migration / heparin binding / basolateral plasma membrane / host cell Golgi apparatus / entry receptor-mediated virion attachment to host cell / response to hypoxia / receptor complex / intracellular signal transduction / immune response / symbiont entry into host cell / external side of plasma membrane / fusion of virus membrane with host plasma membrane / viral envelope / positive regulation of gene expression / host cell plasma membrane / virion membrane / cell surface / extracellular space / extracellular exosome / extracellular region / plasma membrane / cytosol Similarity search - Function
Herpesvirus UL74, glycoprotein / Herpes UL74 glycoproteins / Cytomegalovirus glycoprotein L / Cytomegalovirus glycoprotein L / Betaherpesvirus glycoprotein L (gL) domain profile. / Herpesvirus glycoprotein H main domain / Herpesvirus glycoprotein H / Herpesvirus glycoprotein H, C-terminal / Herpesvirus glycoprotein H, C-terminal domain superfamily / Herpesvirus glycoprotein H C-terminal domain ...Herpesvirus UL74, glycoprotein / Herpes UL74 glycoproteins / Cytomegalovirus glycoprotein L / Cytomegalovirus glycoprotein L / Betaherpesvirus glycoprotein L (gL) domain profile. / Herpesvirus glycoprotein H main domain / Herpesvirus glycoprotein H / Herpesvirus glycoprotein H, C-terminal / Herpesvirus glycoprotein H, C-terminal domain superfamily / Herpesvirus glycoprotein H C-terminal domain / : / Zona pellucida domain, conserved site / ZP domain signature. / Zona pellucida, ZP-C domain / ZP-C domain / Zona pellucida (ZP) domain / ZP domain profile. / Zona pellucida domain Similarity search - Domain/homology
Envelope glycoprotein L / Transforming growth factor beta receptor type 3 / Envelope glycoprotein H / Envelope glycoprotein O Similarity search - Component
Biological species
Human cytomegalovirus HHV-5 / Homo sapiens (human) / Human cytomegalovirus (strain Merlin) / Human cytomegalovirus
Method
single particle reconstruction / cryo EM / Resolution: 2.6 Å
Journal: Cell / Year: 2021 Title: Structures of HCMV Trimer reveal the basis for receptor recognition and cell entry. Authors: Marc Kschonsak / Lionel Rougé / Christopher P Arthur / Ho Hoangdung / Nidhi Patel / Ingrid Kim / Matthew C Johnson / Edward Kraft / Alexis L Rohou / Avinash Gill / Nadia Martinez-Martin / ...Authors: Marc Kschonsak / Lionel Rougé / Christopher P Arthur / Ho Hoangdung / Nidhi Patel / Ingrid Kim / Matthew C Johnson / Edward Kraft / Alexis L Rohou / Avinash Gill / Nadia Martinez-Martin / Jian Payandeh / Claudio Ciferri / Abstract: Human cytomegalovirus (HCMV) infects the majority of the human population and represents the leading viral cause of congenital birth defects. HCMV utilizes the glycoproteins gHgLgO (Trimer) to bind ...Human cytomegalovirus (HCMV) infects the majority of the human population and represents the leading viral cause of congenital birth defects. HCMV utilizes the glycoproteins gHgLgO (Trimer) to bind to platelet-derived growth factor receptor alpha (PDGFRα) and transforming growth factor beta receptor 3 (TGFβR3) to gain entry into multiple cell types. This complex is targeted by potent neutralizing antibodies and represents an important candidate for therapeutics against HCMV. Here, we determine three cryogenic electron microscopy (cryo-EM) structures of the trimer and the details of its interactions with four binding partners: the receptor proteins PDGFRα and TGFβR3 as well as two broadly neutralizing antibodies. Trimer binding to PDGFRα and TGFβR3 is mutually exclusive, suggesting that they function as independent entry receptors. In addition, Trimer-PDGFRα interaction has an inhibitory effect on PDGFRα signaling. Our results provide a framework for understanding HCMV receptor engagement, neutralization, and the development of anti-viral strategies against HCMV.
History
Deposition
Jan 7, 2021
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Header (metadata) release
Mar 10, 2021
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Map release
Mar 10, 2021
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Update
Oct 30, 2024
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Current status
Oct 30, 2024
Processing site: RCSB / Status: Released
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Structure visualization
Movie
Surface view with section colored by density value
Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: LEICA EM GP / Details: blot for 3.5 seconds before plunging.
Details
This sample was monodisperse
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Electron microscopy
Microscope
FEI TITAN KRIOS
Image recording
Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Number grids imaged: 1 / Number real images: 19993 / Average exposure time: 10.0 sec. / Average electron dose: 50.0 e/Å2 / Details: Images were collected in 50 frames every 0.2 s
Electron beam
Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Type of model: OTHER Details: EM map of HCMV Trimer-13H11-Msl109 used as starting reference
Final reconstruction
Applied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 2.6 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cisTEM (ver. 1.02) Details: Used a score threshold of 0.25 for final 3D reconstruction. Map used for model refinements is a composite map after combining 2 focussed maps with PHENIX Number images used: 2737199
Number classes: 200 / Software - Name: RELION (ver. 3.1) / Details: selected 148 of 200 classes
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Atomic model buiding 1
Refinement
Space: REAL / Protocol: AB INITIO MODEL
Output model
PDB-7lbg: CryoEM structure of the HCMV Trimer gHgLgO in complex with human Transforming growth factor beta receptor type 3 and neutralizing fabs 13H11 and MSL-109
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