5HOO

Crystal structure of the Mos1 Strand Transfer Complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.3 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.232 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

A bend, flip and trap mechanism for transposon integration.

Morris, E.R.Grey, H.McKenzie, G.Jones, A.C.Richardson, J.M.

(2016) Elife 5: --

  • DOI: 10.7554/eLife.15537

  • PubMed Abstract: 
  • Cut-and-paste DNA transposons of the mariner/Tc1 family are useful tools for genome engineering and are inserted specifically at TA target sites. A crystal structure of the mariner transposase Mos1 (derived from Drosophila mauritiana), in complex wit ...

    Cut-and-paste DNA transposons of the mariner/Tc1 family are useful tools for genome engineering and are inserted specifically at TA target sites. A crystal structure of the mariner transposase Mos1 (derived from Drosophila mauritiana), in complex with transposon ends covalently joined to target DNA, portrays the transposition machinery after DNA integration. It reveals severe distortion of target DNA and flipping of the target adenines into extra-helical positions. Fluorescence experiments confirm dynamic base flipping in solution. Transposase residues W159, R186, F187 and K190 stabilise the target DNA distortions and are required for efficient transposon integration and transposition in vitro. Transposase recognises the flipped target adenines via base-specific interactions with backbone atoms, offering a molecular basis for TA target sequence selection. Our results will provide a template for re-designing mariner/Tc1 transposases with modified target specificities.


    Organizational Affiliation

    Institute of Quantitative Biology, Biochemistry and Biotechnology, University of Edinburgh, Edinburgh, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Mariner Mos1 transposase
A, B
345Drosophila mauritianaMutation(s): 1 
Gene Names: mariner\T
EC: 3.1.-.-
Find proteins for Q7JQ07 (Drosophila mauritiana)
Go to UniProtKB:  Q7JQ07
Entity ID: 2
MoleculeChainsLengthOrganism
Mos1 IR DNA NTSC,E25synthetic construct
Entity ID: 3
MoleculeChainsLengthOrganism
Mos1 IR TS joined to Target DNA,Mos1 IR TS joined to Target DNAD,F36synthetic constructDrosophila mauritiana
Entity ID: 4
MoleculeChainsLengthOrganism
Target DNAG,H10synthetic construct
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download SDF File 
Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.3 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.232 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 256.340α = 90.00
b = 58.830β = 94.91
c = 110.140γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
PHASERphasing
MOSFLMdata reduction
Aimlessdata scaling
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-06-01
    Type: Initial release
  • Version 1.1: 2016-06-08
    Type: Database references