2FVS

A Structural Study of the CA Dinucleotide Step in the Integrase Processing Site of Moloney Murine Leukemia Virus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.243 
  • R-Value Observed: 0.265 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal structures of oligonucleotides including the integrase processing site of the Moloney murine leukemia virus.

Montano, S.P.Cote, M.L.Roth, M.J.Georgiadis, M.M.

(2006) Nucleic Acids Res 34: 5353-5360

  • DOI: 10.1093/nar/gkl693
  • Primary Citation of Related Structures:  
    2FVS, 2FVR, 2FVQ, 2FVP

  • PubMed Abstract: 
  • In the first step of retroviral integration, integrase cleaves the linear viral DNA within its long terminal repeat (LTR) immediately 3' to the CA dinucleotide step, resulting in a reactive 3' OH on one strand and a 5' two base overhang on the comple ...

    In the first step of retroviral integration, integrase cleaves the linear viral DNA within its long terminal repeat (LTR) immediately 3' to the CA dinucleotide step, resulting in a reactive 3' OH on one strand and a 5' two base overhang on the complementary strand. In order to investigate the structural properties of the 3' end processing site within the Moloney murine leukemia virus (MMLV) LTR d(TCTTTCATT), a host-guest crystallographic method was employed to determine the structures of four self-complementary 16 bp oligonucleotides including LTR sequences (underlined), d(TTTCATTGCAATGAAA), d(CTTTCATTAATGAAAG), d(TCTTTCATATGAAAGA) and d(CACAATGATCATTGTG), the guests, complexed with the N-terminal fragment of MMLV reverse transcriptase, the host. The structures of the LTR-containing oligonucleotides were compared to those of non-LTR oligonucleotides crystallized in the same lattice. Properties unique to the CA dinucleotide step within the LTR sequence, independent of its position from the end of the duplex, include a positive roll angle and negative slide value. This propensity for the CA dinucleotide step within the MMLV LTR sequence to adopt only positive roll angles is likely influenced by the more rigid, invariable 3' and 5' flanking TT dinucleotide steps and may be important for specific recognition and/or cleavage by the MMLV integrase.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, 635 Barnhill Dr., Indianapolis, IN 46202, USA.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
reverse transcriptaseA255Moloney murine leukemia virusMutation(s): 0 
Gene Names: pol
EC: 2.7.7.49 (PDB Primary Data), 3.4.23 (UniProt), 2.7.7.7 (UniProt), 3.1.26.4 (UniProt), 2.7.7 (UniProt), 3.1 (UniProt)
Find proteins for P03355 (Moloney murine leukemia virus (isolate Shinnick))
Explore P03355 
Go to UniProtKB:  P03355
Protein Feature View
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  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 1
    MoleculeChainsLengthOrganismImage
    5'-D(*CP*AP*CP*AP*AP*TP*GP*AP*TP*CP*AP*TP*TP*GP*TP*G)-3'B16N/A
    Experimental Data & Validation

    Experimental Data

    • Method: X-RAY DIFFRACTION
    • Resolution: 2.35 Å
    • R-Value Free: 0.265 
    • R-Value Work: 0.243 
    • R-Value Observed: 0.265 
    • Space Group: P 21 21 2
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 54.238α = 90
    b = 145.68β = 90
    c = 46.943γ = 90
    Software Package:
    Software NamePurpose
    HKL-2000data collection
    SCALEPACKdata scaling
    AMoREphasing
    CNSrefinement
    HKL-2000data reduction

    Structure Validation

    View Full Validation Report



    Entry History 

    Deposition Data

    Revision History 

    • Version 1.0: 2006-12-12
      Type: Initial release
    • Version 1.1: 2008-05-01
      Changes: Version format compliance
    • Version 1.2: 2011-07-13
      Changes: Version format compliance