4QW9

TERNARY CRYSTAL STRUCTURES of A Y-FAMILY DNA POLYMERASE DPO4 FROM SULFOLOBUS SOLFATARICUS IN COMPLEX WITH DNA AND (-)FTC-PPNP

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.245 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history. 


Literature

Structural and kinetic insights into binding and incorporation of L-nucleotide analogs by a Y-family DNA polymerase.

Gaur, V., Vyas, R., Fowler, J.D., Efthimiopoulos, G., Feng, J.Y., Suo, Z.

(2014) Nucleic Acids Res 42: 9984-9995

  • DOI: https://doi.org/10.1093/nar/gku709
  • Primary Citation of Related Structures:  
    4QW8, 4QW9, 4QWA, 4QWB, 4QWC, 4QWD, 4QWE

  • PubMed Abstract: 

    • Considering that all natural nucleotides (D-dNTPs) and the building blocks (D-dNMPs) of DNA chains possess D-stereochemistry, DNA polymerases and reverse transcriptases (RTs) likely possess strongD-stereoselectivity by preferably binding and incorporating D-dNTPs over unnatural L-dNTPs during DNA synthesis ...

    Considering that all natural nucleotides (D-dNTPs) and the building blocks (D-dNMPs) of DNA chains possess D-stereochemistry, DNA polymerases and reverse transcriptases (RTs) likely possess strongD-stereoselectivity by preferably binding and incorporating D-dNTPs over unnatural L-dNTPs during DNA synthesis. Surprisingly, a structural basis for the discrimination against L-dNTPs by DNA polymerases or RTs has not been established although L-deoxycytidine analogs (lamivudine and emtricitabine) and L-thymidine (telbivudine) have been widely used as antiviral drugs for years. Here we report seven high-resolution ternary crystal structures of a prototype Y-family DNA polymerase, DNA, and D-dCTP, D-dCDP, L-dCDP, or the diphosphates and triphosphates of lamivudine and emtricitabine. These structures reveal that relative to D-dCTP, each of these L-nucleotides has its sugar ring rotated by 180° with an unusual O4'-endo sugar puckering and exhibits multiple triphosphate-binding conformations within the active site of the polymerase. Such rare binding modes significantly decrease the incorporation rates and efficiencies of these L-nucleotides catalyzed by the polymerase.

    Organizational Affiliation: 

    Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH 43210, USA suo.3@osu.edu.



Macromolecules

Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DNA polymerase IVA349Saccharolobus solfataricus P2Mutation(s): 0 
Gene Names: dbh, dpo4, SSO2448
EC: 2.7.7.7
UniProt
Find proteins for Q97W02 (Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2))
Explore Q97W02 
Go to UniProtKB:  Q97W02
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ97W02
Protein Feature View
Expand
  • Reference Sequence

Find similar nucleic acids by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChainsLengthOrganismImage
DNA (5'-D(P*GP*GP*CP*TP*AP*CP*AP*GP*GP*AP*CP*TP*C)-3')B [auth C]13N/A
Protein Feature View
Expand
  • Reference Sequence

Find similar nucleic acids by:  Sequence   |   3D Structure  

Entity ID: 3
MoleculeChainsLengthOrganismImage
DNA (5'-D(P*CP*AP*GP*GP*AP*GP*TP*CP*CP*TP*GP*TP*AP*GP*CP*C)-3')C [auth D]16N/A
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
0G4
Query on 0G4
Download Ideal Coordinates CCD File 
D [auth A][[[[(2R,5S)-5-(4-azanyl-5-fluoranyl-2-oxidanylidene-pyrimidin-1-yl)-1,3-oxathiolan-2-yl]methoxy-oxidanyl-phosphoryl]oxy -oxidanyl-phosphoryl]amino]phosphonic acid
C8 H14 F N4 O11 P3 S
LBSQECIRXSOKHJ-NTSWFWBYSA-N		 Ligand Interaction
CA
Query on CA
Download Ideal Coordinates CCD File 
E [auth A],
F [auth A],
G [auth A]		CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.245 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 96.8α = 90
b = 101.9β = 90
c = 52.54γ = 90
Software Package:
Software NamePurpose
MOLREPphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


View more in-depth experimental data
Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-08-27
    Type: Initial release
  • Version 1.1: 2014-09-17
    Changes: Database references