5TYF

DNA Polymerase Mu Product Complex, 10 mM Mg2+ (270 min)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.97 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.175 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history


Literature

Time-lapse crystallography snapshots of a double-strand break repair polymerase in action.

Jamsen, J.A.Beard, W.A.Pedersen, L.C.Shock, D.D.Moon, A.F.Krahn, J.M.Bebenek, K.Kunkel, T.A.Wilson, S.H.

(2017) Nat Commun 8: 253-253

  • DOI: https://doi.org/10.1038/s41467-017-00271-7
  • Primary Citation of Related Structures:  
    5TXX, 5TXZ, 5TYB, 5TYC, 5TYD, 5TYE, 5TYF, 5TYG, 5TYU, 5TYV, 5TYW, 5TYX, 5TYY, 5TYZ

  • PubMed Abstract: 

    DNA polymerase (pol) μ is a DNA-dependent polymerase that incorporates nucleotides during gap-filling synthesis in the non-homologous end-joining pathway of double-strand break repair. Here we report time-lapse X-ray crystallography snapshots of catalytic events during gap-filling DNA synthesis by pol μ. Unique catalytic intermediates and active site conformational changes that underlie catalysis are uncovered, and a transient third (product) metal ion is observed in the product state. The product manganese coordinates phosphate oxygens of the inserted nucleotide and PP i . The product metal is not observed during DNA synthesis in the presence of magnesium. Kinetic analyses indicate that manganese increases the rate constant for deoxynucleoside 5'-triphosphate insertion compared to magnesium. The likely product stabilization role of the manganese product metal in pol μ is discussed. These observations provide insight on structural attributes of this X-family double-strand break repair polymerase that impact its biological function in genome maintenance.DNA polymerase (pol) μ functions in DNA double-strand break repair. Here the authors use time-lapse X-ray crystallography to capture the states of pol µ during the conversion from pre-catalytic to product complex and observe a third transiently bound metal ion in the product state.


  • Organizational Affiliation

    Genome Integrity and Structural Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, 27709, USA.


Macromolecules

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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed DNA/RNA polymerase mu356Homo sapiensMutation(s): 0 
Gene Names: POLMpolmu
EC: 2.7.7.7
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NP87 (Homo sapiens)
Explore Q9NP87 
Go to UniProtKB:  Q9NP87
PHAROS:  Q9NP87
GTEx:  ENSG00000122678 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9NP87
Sequence Annotations
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  • Reference Sequence

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Entity ID: 2
MoleculeChains LengthOrganismImage
DNA (5'-D(*CP*GP*GP*CP*AP*TP*AP*CP*G)-3')B [auth T]9unidentified
Sequence Annotations
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  • Reference Sequence

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Entity ID: 3
MoleculeChains LengthOrganismImage
DNA (5'-D(*CP*GP*TP*AP*T)-3')C [auth P]5unidentified
Sequence Annotations
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  • Reference Sequence

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Entity ID: 4
MoleculeChains LengthOrganismImage
DNA (5'-D(P*GP*CP*CP*G)-3')4unidentified
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 6 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
EPE
Query on EPE

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J [auth A]4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID
C8 H18 N2 O4 S
JKMHFZQWWAIEOD-UHFFFAOYSA-N
DTT
Query on DTT

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K [auth A]2,3-DIHYDROXY-1,4-DITHIOBUTANE
C4 H10 O2 S2
VHJLVAABSRFDPM-IMJSIDKUSA-N
GOA
Query on GOA

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L [auth A]GLYCOLIC ACID
C2 H4 O3
AEMRFAOFKBGASW-UHFFFAOYSA-N
EDO
Query on EDO

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H [auth A],
I [auth A]
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
MG
Query on MG

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E [auth A]MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
NA
Query on NA

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F [auth A],
G [auth A]
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.97 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.175 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 59.994α = 90
b = 68.482β = 90
c = 110.702γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data collection
PDB_EXTRACTdata extraction
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Environmental Health Sciences (NIH/NIEHS)United StatesZ01-ES050158

Revision History  (Full details and data files)

  • Version 1.0: 2017-08-30
    Type: Initial release
  • Version 1.1: 2019-12-18
    Changes: Advisory, Author supporting evidence
  • Version 1.2: 2023-10-04
    Changes: Data collection, Database references, Derived calculations, Refinement description
  • Version 2.0: 2023-11-15
    Changes: Atomic model, Data collection, Derived calculations