4XGU

Structure of C. elegans PCH-2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.301 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.228 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

TRIP13 is a protein-remodeling AAA+ ATPase that catalyzes MAD2 conformation switching.

Ye, Q.Rosenberg, S.C.Moeller, A.Speir, J.A.Su, T.Y.Corbett, K.D.

(2015) Elife 4: e07367

  • DOI: 10.7554/eLife.07367

  • PubMed Abstract: 
  • The AAA+ family ATPase TRIP13 is a key regulator of meiotic recombination and the spindle assembly checkpoint, acting on signaling proteins of the conserved HORMA domain family. Here we present the structure of the Caenorhabditis elegans TRIP13 ortho ...

    The AAA+ family ATPase TRIP13 is a key regulator of meiotic recombination and the spindle assembly checkpoint, acting on signaling proteins of the conserved HORMA domain family. Here we present the structure of the Caenorhabditis elegans TRIP13 ortholog PCH-2, revealing a new family of AAA+ ATPase protein remodelers. PCH-2 possesses a substrate-recognition domain related to those of the protein remodelers NSF and p97, while its overall hexameric architecture and likely structural mechanism bear close similarities to the bacterial protein unfoldase ClpX. We find that TRIP13, aided by the adapter protein p31(comet), converts the HORMA-family spindle checkpoint protein MAD2 from a signaling-active 'closed' conformer to an inactive 'open' conformer. We propose that TRIP13 and p31(comet) collaborate to inactivate the spindle assembly checkpoint through MAD2 conformational conversion and disassembly of mitotic checkpoint complexes. A parallel HORMA protein disassembly activity likely underlies TRIP13's critical regulatory functions in meiotic chromosome structure and recombination.


    Organizational Affiliation

    Ludwig Institute for Cancer Research, San Diego Branch, La Jolla, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Putative pachytene checkpoint protein 2
A, B, C, D, E, F
424Caenorhabditis elegansMutation(s): 0 
Gene Names: pch-2
Find proteins for Q09535 (Caenorhabditis elegans)
Go to UniProtKB:  Q09535
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, C, D, E, F
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
ADP
Query on ADP

Download SDF File 
Download CCD File 
B, E
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.301 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.228 
  • Space Group: C 2 2 21
  • Diffraction Data DOI: 
    10.15785/SBGRID/20 SBGrid
Unit Cell:
Length (Å)Angle (°)
a = 126.710α = 90.00
b = 240.970β = 90.00
c = 197.950γ = 90.00
Software Package:
Software NamePurpose
Aimlessdata scaling
RESOLVEphasing
Cootmodel building
PHENIXrefinement
XDSdata reduction
SHELXphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2015-01-02 
  • Released Date: 2015-05-06 
  • Deposition Author(s): Ye, Q., Corbett, K.D.

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical SciencesUnited StatesR01GM104141

Revision History 

  • Version 1.0: 2015-05-06
    Type: Initial release
  • Version 1.1: 2015-05-13
    Type: Database references
  • Version 1.2: 2015-06-03
    Type: Database references
  • Version 1.3: 2016-06-01
    Type: Data collection
  • Version 1.4: 2017-09-20
    Type: Author supporting evidence, Derived calculations