4PWX

Crystal structure of an ATP-bound Get3-Get4-Get5 complex from S.cerevisiae

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 5.40 Å
  • R-Value Free: 0.328 
  • R-Value Work: 0.270 

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This is version 1.2 of the entry. See complete history. 


Literature

Crystal structure of ATP-bound Get3-Get4-Get5 complex reveals regulation of Get3 by Get4.

Gristick, H.B., Rao, M., Chartron, J.W., Rome, M.E., Shan, S.O., Clemons, W.M.

(2014) Nat Struct Mol Biol 21: 437-442

  • DOI: 10.1038/nsmb.2813
  • Primary Citation of Related Structures:  
    4PWX

  • PubMed Abstract: 

    • Correct localization of membrane proteins is essential to all cells. Chaperone cascades coordinate the capture and handover of substrate proteins from the ribosomes to the target membranes, yet the mechanistic and structural details of these processes re ...

    Correct localization of membrane proteins is essential to all cells. Chaperone cascades coordinate the capture and handover of substrate proteins from the ribosomes to the target membranes, yet the mechanistic and structural details of these processes remain unclear. Here we investigate the conserved GET pathway, in which the Get4-Get5 complex mediates the handover of tail-anchor (TA) substrates from the cochaperone Sgt2 to the Get3 ATPase, the central targeting factor. We present a crystal structure of a yeast Get3-Get4-Get5 complex in an ATP-bound state and show how Get4 primes Get3 by promoting the optimal configuration for substrate capture. Structure-guided biochemical analyses demonstrate that Get4-mediated regulation of ATP hydrolysis by Get3 is essential to efficient TA-protein targeting. Analogous regulation of other chaperones or targeting factors could provide a general mechanism for ensuring effective substrate capture during protein biogenesis.

    Organizational Affiliation: 

    Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California, USA.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ATPase GET3 A, B356Saccharomyces cerevisiae S288CMutation(s): 1 
Gene Names: ARR4, D2371, GET3, Get3 YDL100C, YDL100C
EC: 3.6
Find proteins for Q12154 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Go to UniProtKB:  Q12154
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Golgi to ER traffic protein 4 C, E288Saccharomyces cerevisiae S288CMutation(s): 2 
Gene Names: GET4, GET4 YOR164C, O3580, YOR164C
Find proteins for Q12125 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q12125 
Go to UniProtKB:  Q12125
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Ubiquitin-like protein MDY2 D, F54Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: GET5, GET5 MDY2 YOL111C, MDY2, TMA24, YOL111C
Find proteins for Q12285 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q12285 
Go to UniProtKB:  Q12285
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP
Query on ATP
Download Ideal Coordinates CCD File 
A, B
ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N		 Ligand Interaction
ZN
Query on ZN
Download Ideal Coordinates CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N		 Ligand Interaction
MG
Query on MG
Download Ideal Coordinates CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 5.40 Å
  • R-Value Free: 0.328 
  • R-Value Work: 0.270 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 166.341α = 90
b = 134.501β = 113.37
c = 84.06γ = 90
Software Package:
Software NamePurpose
Blu-Icedata collection
Web-Icedata collection
PHASERphasing
REFMACrefinement
CNSrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-04-09
    Type: Initial release
  • Version 1.1: 2014-05-21
    Changes: Database references
  • Version 1.2: 2017-11-22
    Changes: Refinement description