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Structure of SARS-CoV-2 ORF8, a rapidly evolving immune evasion protein.

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TLDR
In this article, the crystal structure of SARS-CoV-2 ORF8 was determined at 2.04-A resolution by X-ray crystallography, which reveals a ∼60-residue core similar to SARS CoV 2 ORF7a, with the addition of two dimerization interfaces unique to the SARS co-virus 2.
Abstract
The molecular basis for the severity and rapid spread of the COVID-19 disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is largely unknown. ORF8 is a rapidly evolving accessory protein that has been proposed to interfere with immune responses. The crystal structure of SARS-CoV-2 ORF8 was determined at 2.04-A resolution by X-ray crystallography. The structure reveals a ∼60-residue core similar to SARS-CoV-2 ORF7a, with the addition of two dimerization interfaces unique to SARS-CoV-2 ORF8. A covalent disulfide-linked dimer is formed through an N-terminal sequence specific to SARS-CoV-2, while a separate noncovalent interface is formed by another SARS-CoV-2-specific sequence, 73YIDI76 Together, the presence of these interfaces shows how SARS-CoV-2 ORF8 can form unique large-scale assemblies not possible for SARS-CoV, potentially mediating unique immune suppression and evasion activities.

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Journal ArticleDOI

Dali server: structural unification of protein families

Liisa Holm
TL;DR: Two most recent upgrades to the Dali server for 3D protein structure comparison are reported: the foldomes of key organisms in the AlphaFold Database (version 1) are searchable by Dali, and structural alignments are annotated with protein families.
Journal ArticleDOI

OUP accepted manuscript

TL;DR: The Dali server as discussed by the authors provides structural coverage of the protein universe by linking the structurally characterized SWI/SNF and NAM families as well as structural models of the CG-1 family and uncharacterized proteins to the structure of Gti1/Pac2, a previously known member of the WRKY/GCM1 clan.
Journal ArticleDOI

Emerging SARS-CoV-2 variants of concern and potential intervention approaches.

TL;DR: The major variant of concerns (VOCs) have shared mutations in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spike proteins, mostly on the S1 unit and resulted in higher transmissibility rate and affect viral virulence and clinical outcome as discussed by the authors.
Journal ArticleDOI

Structural biology of SARS-CoV-2 and implications for therapeutic development.

TL;DR: In this paper, structural features of SARS-CoV-2 from the whole viral particle to the individual viral proteins and discuss their functions as well as their potential as targets for therapeutic interventions.
References
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Journal ArticleDOI

Features and development of Coot.

TL;DR: Coot is a molecular-graphics program designed to assist in the building of protein and other macromolecular models and the current state of development and available features are presented.
Journal ArticleDOI

Phaser crystallographic software

TL;DR: A description is given of Phaser-2.1: software for phasing macromolecular crystal structures by molecular replacement and single-wavelength anomalous dispersion phasing.
Journal ArticleDOI

The CCP4 suite: programs for protein crystallography

TL;DR: The CCP4 (Collaborative Computational Project, number 4) program suite is a collection of programs and associated data and subroutine libraries which can be used for macromolecular structure determination by X-ray crystallography.
Journal ArticleDOI

Inference of macromolecular assemblies from crystalline state.

TL;DR: A new method, based on chemical thermodynamics, is developed for automatic detection of macromolecular assemblies in the Protein Data Bank (PDB) entries that are the results of X-ray diffraction experiments, as found, biological units may be recovered at 80-90% success rate, which makesX-ray crystallography an important source of experimental data on macromolescular complexes and protein-protein interactions.
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