3SPY

RB69 DNA Polymerase(L415A/L561A/S565G/Y567A) Ternary Complex with dUpCpp Opposite dA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.14 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.191 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural Insights into Complete Metal Ion Coordination from Ternary Complexes of B Family RB69 DNA Polymerase.

Xia, S.Wang, M.Blaha, G.Konigsberg, W.H.Wang, J.

(2011) Biochemistry 50: 9114-9124

  • DOI: 10.1021/bi201260h
  • Primary Citation of Related Structures:  3S9H, 3SCX, 3SI6, 3SJJ, 3SNN, 3SPZ, 3SQ0, 3SQ1

  • PubMed Abstract: 
  • We have captured a preinsertion ternary complex of RB69 DNA polymerase (RB69pol) containing the 3' hydroxyl group at the terminus of an extendable primer (ptO3') and a nonhydrolyzable 2'-deoxyuridine 5'-α,β-substituted triphosphate, dUpXpp, where X i ...

    We have captured a preinsertion ternary complex of RB69 DNA polymerase (RB69pol) containing the 3' hydroxyl group at the terminus of an extendable primer (ptO3') and a nonhydrolyzable 2'-deoxyuridine 5'-α,β-substituted triphosphate, dUpXpp, where X is either NH or CH(2), opposite a complementary templating dA nucleotide residue. Here we report four structures of these complexes formed by three different RB69pol variants with catalytically inert Ca(2+) and four other structures with catalytically competent Mn(2+) or Mg(2+). These structures provide new insights into why the complete divalent metal-ion coordination complexes at the A and B sites are required for nucleotidyl transfer. They show that the metal ion in the A site brings ptO3' close to the α-phosphorus atom (Pα) of the incoming dNTP to enable phosphodiester bond formation through simultaneous coordination of both ptO3' and the nonbridging Sp oxygen of the dNTP's α-phosphate. The coordination bond length of metal ion A as well as its ionic radius determines how close ptO3' can approach Pα. These variables are expected to affect the rate of bond formation. The metal ion in the B site brings the pyrophosphate product close enough to Pα to enable pyrophosphorolysis and assist in the departure of the pyrophosphate. In these dUpXpp-containing complexes, ptO3' occupies the vertex of a distorted metal ion A coordination octahedron. When ptO3' is placed at the vertex of an undistorted, idealized metal ion A octahedron, it is within bond formation distance to Pα. This geometric relationship appears to be conserved among DNA polymerases of known structure.


    Organizational Affiliation

    Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut 96520-8114, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DNA polymerase
A
901Enterobacteria phage RB69Gene Names: 43
EC: 2.7.7.7, 3.1.11.-
Find proteins for Q38087 (Enterobacteria phage RB69)
Go to UniProtKB:  Q38087
Entity ID: 2
MoleculeChainsLengthOrganism
5'-D(*TP*CP*GP*AP*GP*TP*AP*AP*GP*CP*AP*GP*TP*CP*CP*GP*CP*G)-3'T18N/A
Entity ID: 3
MoleculeChainsLengthOrganism
5'-D(*GP*CP*GP*GP*AP*CP*TP*GP*CP*TP*TP*AP*C)-3'P13N/A
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
UPC
Query on UPC

Download SDF File 
Download CCD File 
A
2'-deoxy-5'-O-[(R)-hydroxy{[(R)-hydroxy(phosphonooxy)phosphoryl]methyl}phosphoryl]uridine
C10 H17 N2 O13 P3
CLYYXAGDTAZMBH-LKEWCRSYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.14 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.191 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 75.336α = 90.00
b = 120.598β = 90.00
c = 130.812γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
HKL-2000data collection
HKL-2000data reduction
REFMACrefinement
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-10-12
    Type: Initial release
  • Version 1.1: 2011-11-02
    Type: Database references