3C5F

Structure of a binary complex of the R517A Pol lambda mutant

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.224 

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This is version 1.3 of the entry. See complete history. 


Literature

Substrate-induced DNA strand misalignment during catalytic cycling by DNA polymerase lambda.

Bebenek, K., Garcia-Diaz, M., Foley, M.C., Pedersen, L.C., Schlick, T., Kunkel, T.A.

(2008) EMBO Rep 9: 459-464

  • DOI: 10.1038/embor.2008.33
  • Primary Citation of Related Structures:  
    3C5F, 3C5G

  • PubMed Abstract: 

    • The simple deletion of nucleotides is common in many organisms. It can be advantageous when it activates genes beneficial to microbial survival in adverse environments, and deleterious when it mutates genes relevant to survival, cancer or degenerative diseases ...

    The simple deletion of nucleotides is common in many organisms. It can be advantageous when it activates genes beneficial to microbial survival in adverse environments, and deleterious when it mutates genes relevant to survival, cancer or degenerative diseases. The classical idea is that simple deletions arise by strand slippage. A prime opportunity for slippage occurs during DNA synthesis, but it remains unclear how slippage is controlled during a polymerization cycle. Here, we report crystal structures and molecular dynamics simulations of mutant derivatives of DNA polymerase lambda bound to a primer-template during strand slippage. Relative to the primer strand, the template strand is in multiple conformations, indicating intermediates on the pathway to deletion mutagenesis. Consistent with these intermediates, the mutant polymerases generate single-base deletions at high rates. The results indicate that dNTP-induced template strand repositioning during conformational rearrangements in the catalytic cycle is crucial to controlling the rate of strand slippage.

    Organizational Affiliation: 

    Laboratory of Structural Biology and Laboratory of Molecular Genetics, National Institute of Environmental Health Sciences, NIH, Research Triangle Park, North Carolina 27709, USA.



Macromolecules

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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
DNA polymerase lambdaG [auth A],
H [auth B]		335Homo sapiensMutation(s): 1 
Gene Names: POLL
EC: 2.7.7.7 (PDB Primary Data), 4.2.99 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for Q9UGP5 (Homo sapiens)
Explore Q9UGP5 
Go to UniProtKB:  Q9UGP5
PHAROS:  Q9UGP5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9UGP5
Protein Feature View
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  • Reference Sequence

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Entity ID: 1
MoleculeChainsLengthOrganismImage
DNA (5'-D(*DCP*DGP*DGP*DCP*DCP*DGP*DTP*DAP*DCP*DTP*DG)-3')A [auth T],
D [auth U]		11N/A
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsLengthOrganismImage
DNA (5'-D(*DCP*DAP*DGP*DTP*DAP*DC)-3')B [auth P],
E [auth Q]		6N/A
Protein Feature View
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  • Reference Sequence

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Entity ID: 3
MoleculeChainsLengthOrganismImage
DNA (5'-D(P*DGP*DCP*DCP*DG)-3')C [auth D],
F [auth E]		4N/A
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.224 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 94.237α = 90
b = 151.884β = 90
c = 85.635γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection
CNSphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-09-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-10-25
    Changes: Refinement description
  • Version 1.3: 2021-10-20
    Changes: Database references, Derived calculations