8CQZ

Homo sapiens Get3 in complex with the Get1 cytoplasmic domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.247 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

The GET insertase exhibits conformational plasticity and induces membrane thinning.

McDowell, M.A.Heimes, M.Enkavi, G.Farkas, A.Saar, D.Wild, K.Schwappach, B.Vattulainen, I.Sinning, I.

(2023) Nat Commun 14: 7355-7355

  • DOI: https://doi.org/10.1038/s41467-023-42867-2
  • Primary Citation of Related Structures:  
    8CQZ, 8CR1, 8CR2, 8ODU, 8ODV

  • PubMed Abstract: 

    The eukaryotic guided entry of tail-anchored proteins (GET) pathway mediates the biogenesis of tail-anchored (TA) membrane proteins at the endoplasmic reticulum. In the cytosol, the Get3 chaperone captures the TA protein substrate and delivers it to the Get1/Get2 membrane protein complex (GET insertase), which then inserts the substrate via a membrane-embedded hydrophilic groove. Here, we present structures, atomistic simulations and functional data of human and Chaetomium thermophilum Get1/Get2/Get3. The core fold of the GET insertase is conserved throughout eukaryotes, whilst thinning of the lipid bilayer occurs in the vicinity of the hydrophilic groove to presumably lower the energetic barrier of membrane insertion. We show that the gating interaction between Get2 helix α3' and Get3 drives conformational changes in both Get3 and the Get1/Get2 membrane heterotetramer. Thus, we provide a framework to understand the conformational plasticity of the GET insertase and how it remodels its membrane environment to promote substrate insertion.


  • Organizational Affiliation

    Heidelberg University Biochemistry Center (BZH), Im Neuenheimer Feld 328, 69120, Heidelberg, Germany. melanie.mcdowell@biophys.mpg.de.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ATPase ASNA1360Homo sapiensMutation(s): 0 
Gene Names: ASNA1ARSATRC40
EC: 3.6
UniProt & NIH Common Fund Data Resources
Find proteins for O43681 (Homo sapiens)
Explore O43681 
Go to UniProtKB:  O43681
PHAROS:  O43681
GTEx:  ENSG00000198356 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO43681
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Guided entry of tail-anchored proteins factor 168Homo sapiensMutation(s): 0 
Gene Names: GET1CHD5WRB
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for O00258 (Homo sapiens)
Explore O00258 
Go to UniProtKB:  O00258
PHAROS:  O00258
GTEx:  ENSG00000182093 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO00258
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.247 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.478α = 90
b = 81.549β = 90
c = 92.185γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
STARANISOdata scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
German Research Foundation (DFG)GermanyLeibniz SI 586/6-1
German Research Foundation (DFG)GermanyTRR83 TP22

Revision History  (Full details and data files)

  • Version 1.0: 2023-11-29
    Type: Initial release