5GTM

Modified human MxA, nucleotide-free form

  • Classification: ANTIVIRAL PROTEIN
  • Organism(s): Homo sapiens
  • Expression System: Escherichia coli
  • Mutation(s): Yes 

  • Deposited: 2016-08-22 Released: 2017-05-31 
  • Deposition Author(s): Chen, Y., Gao, S.
  • Funding Organization(s): National Natural Science Foundation of China, Ministry of Science and Technology of the People's Republic of China, Ministry of Education of the People's Republic of China

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.207 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Conformational dynamics of dynamin-like MxA revealed by single-molecule FRET

Chen, Y.Zhang, L.Graf, L.Yu, B.Liu, Y.Kochs, G.Zhao, Y.Gao, S.

(2017) Nat Commun 8: 15744-15744

  • DOI: 10.1038/ncomms15744
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Human myxovirus resistance protein 1 (MxA) restricts a wide range of viruses and is closely related to the membrane-remodelling GTPase dynamin. The functions of MxA rely on domain rearrangements coupled with GTP hydrolysis cycles. To gain insight int ...

    Human myxovirus resistance protein 1 (MxA) restricts a wide range of viruses and is closely related to the membrane-remodelling GTPase dynamin. The functions of MxA rely on domain rearrangements coupled with GTP hydrolysis cycles. To gain insight into this process, we studied real-time domain dynamics of MxA by single-molecule fluorescence resonance energy transfer. We find that the GTPase domain-bundle-signalling-element (BSE) region can adopt either an 'open' or a 'closed' conformation in all nucleotide-loading conditions. Whereas the open conformation is preferred in nucleotide-free, GDP·AlF 4 - -bound and GDP-bound forms, loading of GTP activates the relative movement between the two domains and alters the conformational preference to the 'closed' state. Moreover, frequent relative movement was observed between BSE and stalk via hinge 1. On the basis of these results, we suggest how MxA molecules within a helical polymer collectively generate a stable torque through random GTP hydrolysis cycles. Our study provides mechanistic insights into fundamental cellular events such as viral resistance and endocytosis.


    Organizational Affiliation

    State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Interferon-induced GTP-binding protein Mx1
A, B
601Homo sapiensMutation(s): 10 
Gene Names: MX1
Find proteins for P20591 (Homo sapiens)
Go to UniProtKB:  P20591
NIH Common Fund Data Resources
PHAROS  P20591
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.207 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 104.18α = 90
b = 60.16β = 98.62
c = 153.92γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2016-08-22 
  • Released Date: 2017-05-31 
  • Deposition Author(s): Chen, Y., Gao, S.

Funding OrganizationLocationGrant Number
National Natural Science Foundation of ChinaChina31200553
Ministry of Science and Technology of the People's Republic of ChinaChina2013CB910500
Ministry of Education of the People's Republic of ChinaChinaNCET-12-0567

Revision History 

  • Version 1.0: 2017-05-31
    Type: Initial release
  • Version 1.1: 2017-06-07
    Changes: Database references
  • Version 1.2: 2017-06-21
    Changes: Database references