4XP7

Crystal structure of Human tRNA dihydrouridine synthase 2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.170 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

From bacterial to human dihydrouridine synthase: automated structure determination.

Whelan, F.Jenkins, H.T.Griffiths, S.C.Byrne, R.T.Dodson, E.J.Antson, A.A.

(2015) Acta Crystallogr D Biol Crystallogr 71: 1564-1571

  • DOI: 10.1107/S1399004715009220
  • Primary Citation of Related Structures:  
    4XP7

  • PubMed Abstract: 
  • The reduction of uridine to dihydrouridine at specific positions in tRNA is catalysed by dihydrouridine synthase (Dus) enzymes. Increased expression of human dihydrouridine synthase 2 (hDus2) has been linked to pulmonary carcinogenesis, while its knockdown decreased cancer cell line viability, suggesting that it may serve as a valuable target for therapeutic intervention ...

    The reduction of uridine to dihydrouridine at specific positions in tRNA is catalysed by dihydrouridine synthase (Dus) enzymes. Increased expression of human dihydrouridine synthase 2 (hDus2) has been linked to pulmonary carcinogenesis, while its knockdown decreased cancer cell line viability, suggesting that it may serve as a valuable target for therapeutic intervention. Here, the X-ray crystal structure of a construct of hDus2 encompassing the catalytic and tRNA-recognition domains (residues 1-340) determined at 1.9 Å resolution is presented. It is shown that the structure can be determined automatically by phenix.mr_rosetta starting from a bacterial Dus enzyme with only 18% sequence identity and a significantly divergent structure. The overall fold of the human Dus2 is similar to that of bacterial enzymes, but has a larger recognition domain and a unique three-stranded antiparallel β-sheet insertion into the catalytic domain that packs next to the recognition domain, contributing to domain-domain interactions. The structure may inform the development of novel therapeutic approaches in the fight against lung cancer.


    Organizational Affiliation

    York Structural Biology Laboratory, Department of Chemistry, The University of York, Heslington, York YO10 5DD, England.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
tRNA-dihydrouridine(20) synthase [NAD(P)+]-likeA346Homo sapiensMutation(s): 0 
Gene Names: DUS2DUS2L
EC: 1.3.1 (PDB Primary Data), 1.3.1.91 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NX74 (Homo sapiens)
Explore Q9NX74 
Go to UniProtKB:  Q9NX74
PHAROS:  Q9NX74
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FNR
Query on FNR

Download Ideal Coordinates CCD File 
B [auth A]1-DEOXY-1-(7,8-DIMETHYL-2,4-DIOXO-3,4-DIHYDRO-2H-BENZO[G]PTERIDIN-1-ID-10(5H)-YL)-5-O-PHOSPHONATO-D-RIBITOL
C17 H23 N4 O9 P
YTNIXZGTHTVJBW-SCRDCRAPSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CSO
Query on CSO
AL-PEPTIDE LINKINGC3 H7 N O3 SCYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.170 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 46.252α = 90
b = 49.562β = 95.71
c = 69.612γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
SCALAdata scaling
MOLREPphasing
PDB_EXTRACTdata extraction
XDSdata reduction

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Wellcome TrustUnited Kingdom081916
Wellcome TrustUnited Kingdom098230

Revision History  (Full details and data files)

  • Version 1.0: 2015-01-28
    Type: Initial release
  • Version 1.1: 2015-07-15
    Changes: Database references