4IYN

Structure of mitochondrial Hsp90 (TRAP1) with ADP-ALF4-


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.312 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.191 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural asymmetry in the closed state of mitochondrial Hsp90 (TRAP1) supports a two-step ATP hydrolysis mechanism.

Lavery, L.A.Partridge, J.R.Ramelot, T.A.Elnatan, D.Kennedy, M.A.Agard, D.A.

(2014) Mol.Cell 53: 330-343

  • DOI: 10.1016/j.molcel.2013.12.023
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • While structural symmetry is a prevailing feature of homo-oligomeric proteins, asymmetry provides unique mechanistic opportunities. We present the crystal structure of full-length TRAP1, the mitochondrial Hsp90 molecular chaperone, in a catalytically ...

    While structural symmetry is a prevailing feature of homo-oligomeric proteins, asymmetry provides unique mechanistic opportunities. We present the crystal structure of full-length TRAP1, the mitochondrial Hsp90 molecular chaperone, in a catalytically active closed state. The TRAP1 homodimer adopts a distinct, asymmetric conformation, where one protomer is reconfigured via a helix swap at the middle:C-terminal domain (MD:CTD) interface. This interface plays a critical role in client binding. Solution methods validate the asymmetry and show extension to Hsp90 homologs. Point mutations that disrupt unique contacts at each MD:CTD interface reduce catalytic activity and substrate binding and demonstrate that each protomer needs access to both conformations. Crystallographic data on a dimeric NTD:MD fragment suggests that asymmetry arises from strain induced by simultaneous NTD and CTD dimerization. The observed asymmetry provides the potential for an additional step in the ATPase cycle, allowing sequential ATP hydrolysis steps to drive both client remodeling and client release.


    Organizational Affiliation

    Howard Hughes Medical Institute and the Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA 94158, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TNF receptor-associated protein 1
A, B
719Danio rerioMutation(s): 0 
Gene Names: trap1
Find proteins for A8WFV1 (Danio rerio)
Go to UniProtKB:  A8WFV1
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

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Download CCD File 
A, B
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
ALF
Query on ALF

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Download CCD File 
A, B
TETRAFLUOROALUMINATE ION
Al F4
UYOMQIYKOOHAMK-UHFFFAOYSA-J
 Ligand Interaction
MG
Query on MG

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Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
CO
Query on CO

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Download CCD File 
A, B
COBALT (II) ION
Co
XLJKHNWPARRRJB-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.312 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.191 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 178.896α = 90.00
b = 96.597β = 134.26
c = 125.901γ = 90.00
Software Package:
Software NamePurpose
Blu-Icedata collection
HKL-2000data reduction
SOLVEphasing
PHENIXrefinement
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-01-22
    Type: Initial release
  • Version 1.1: 2014-08-27
    Type: Database references