7MQJ

Dhr1 Helicase Core


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.23 Å
  • R-Value Free: 
    0.227 (Depositor), 0.230 (DCC) 
  • R-Value Work: 
    0.179 (Depositor), 0.180 (DCC) 
  • R-Value Observed: 
    0.182 (Depositor) 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted ADPClick on this verticalbar to view details

This is version 1.2 of the entry. See complete history


Literature

Nucleolar maturation of the human small subunit processome.

Singh, S.Vanden Broeck, A.Miller, L.Chaker-Margot, M.Klinge, S.

(2021) Science 373: eabj5338-eabj5338

  • DOI: https://doi.org/10.1126/science.abj5338
  • Primary Citation of Related Structures:  
    7MQ8, 7MQ9, 7MQA, 7MQJ

  • PubMed Abstract: 

    The human small subunit processome mediates early maturation of the small ribosomal subunit by coupling RNA folding to subsequent RNA cleavage and processing steps. We report the high-resolution cryo–electron microscopy structures of maturing human small subunit (SSU) processomes at resolutions of 2.7 to 3.9 angstroms. These structures reveal the molecular mechanisms that enable crucial progressions during SSU processome maturation. RNA folding states within these particles are communicated to and coordinated with key enzymes that drive irreversible steps such as targeted exosome-mediated RNA degradation, protein-guided site-specific endonucleolytic RNA cleavage, and tightly controlled RNA unwinding. These conserved mechanisms highlight the SSU processome’s impressive structural plasticity, which endows this 4.5-megadalton nucleolar assembly with the distinctive ability to mature the small ribosomal subunit from within.


  • Organizational Affiliation

    Laboratory of Protein and Nucleic Acid Chemistry, The Rockefeller University, New York, NY 10065, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Probable ATP-dependent RNA helicase DHR1798Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: ECM16DHR1YMR128WYM9553.04
EC: 3.6.4.13
UniProt
Find proteins for Q04217 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q04217 
Go to UniProtKB:  Q04217
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ04217
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.23 Å
  • R-Value Free:  0.227 (Depositor), 0.230 (DCC) 
  • R-Value Work:  0.179 (Depositor), 0.180 (DCC) 
  • R-Value Observed: 0.182 (Depositor) 
Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.77α = 90
b = 130.94β = 106.48
c = 86.08γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted ADPClick on this verticalbar to view details

Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United States1DP2GM123459

Revision History  (Full details and data files)

  • Version 1.0: 2021-09-22
    Type: Initial release
  • Version 1.1: 2021-09-29
    Changes: Database references
  • Version 1.2: 2023-10-18
    Changes: Data collection, Refinement description