4OHX

C. Elegans Clp1 bound to ADP and Mg2+ (RNA released state)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.186 

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Ligand Structure Quality Assessment 


This is version 1.4 of the entry. See complete history


Literature

RNA specificity and regulation of catalysis in the eukaryotic polynucleotide kinase clp1.

Dikfidan, A.Loll, B.Zeymer, C.Magler, I.Clausen, T.Meinhart, A.

(2014) Mol Cell 54: 975-986

  • DOI: https://doi.org/10.1016/j.molcel.2014.04.005
  • Primary Citation of Related Structures:  
    4OHV, 4OHW, 4OHX, 4OHY, 4OHZ, 4OI0, 4OI1, 4OI2, 4OI4

  • PubMed Abstract: 

    RNA-specific polynucleotide kinases of the Clp1 subfamily are key components of various RNA maturation pathways. However, the structural basis explaining their substrate specificity and the enzymatic mechanism is elusive. Here, we report crystal structures of Clp1 from Caenorhabditis elegans (ceClp1) in a number of nucleotide- and RNA-bound states along the reaction pathway. The combined structural and biochemical analysis of ceClp1 elucidates the RNA specificity and lets us derive a general model for enzyme catalysis of RNA-specific polynucleotide kinases. We identified an RNA binding motif referred to as "clasp" as well as a conformational switch that involves the essential Walker A lysine (Lys127) and regulates the enzymatic activity of ceClp1. Structural comparison with other P loop proteins, such as kinases, adenosine triphosphatases (ATPases), and guanosine triphosphatases (GTPases), suggests that the observed conformational switch of the Walker A lysine is a broadly relevant mechanistic feature.


  • Organizational Affiliation

    Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Heidelberg 69120, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Protein clpf-1431Caenorhabditis elegansMutation(s): 0 
Gene Names: clpf-1F59A2.4
UniProt
Find proteins for P52874 (Caenorhabditis elegans)
Explore P52874 
Go to UniProtKB:  P52874
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP52874
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.186 
  • Space Group: P 31
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 98.91α = 90
b = 98.91β = 90
c = 42.81γ = 120
Software Package:
Software NamePurpose
DNAdata collection
REFMACrefinement
XDSdata reduction
XSCALEdata scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-05-14
    Type: Initial release
  • Version 1.1: 2014-07-02
    Changes: Database references
  • Version 1.2: 2015-01-21
    Changes: Structure summary
  • Version 1.3: 2017-11-22
    Changes: Refinement description
  • Version 1.4: 2024-02-28
    Changes: Data collection, Database references, Derived calculations