2F5G

Crystal structure of IS200 transposase

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.213 

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This is version 1.2 of the entry. See complete history. 


Literature

Crystal Structure of a Metal Ion-bound IS200 Transposase

Lee, H.H., Yoon, J.Y., Kim, H.S., Kang, J.Y., Kim, K.H., Kim, D.J., Ha, J.Y., Mikami, B., Yoon, H.J., Suh, S.W.

(2006) J Biol Chem 281: 4261-4266

  • DOI: 10.1074/jbc.M511567200
  • Primary Citation of Related Structures:  
    2F4F, 2F5G

  • PubMed Abstract: 

    • IS200 transposases, present in many bacteria and Archaea, appear to be distinct from other groups of transposases. To provide a structural basis for understanding the action of IS200 transposases, we have determined the crystal structure of the SSO1474 protein from Sulfolobus solfataricus, a member of the IS200 family, in both Mn(2+)-bound and Mn(2+)-free forms ...

    IS200 transposases, present in many bacteria and Archaea, appear to be distinct from other groups of transposases. To provide a structural basis for understanding the action of IS200 transposases, we have determined the crystal structure of the SSO1474 protein from Sulfolobus solfataricus, a member of the IS200 family, in both Mn(2+)-bound and Mn(2+)-free forms. Its monomer fold is distinct from other classes of structurally characterized transposases. Two monomers form a tight dimer by exchanging the C-terminal alpha-helix and by merging the two central beta-sheets into a large beta-sheet. Glu(55), His(62), and four water molecules provide the direct coordination sphere of the catalytically essential metal ion in the Mn(2+)-bound structure. His(16), Asp(59), and His(60) also play important roles in maintaining the metal binding site. The catalytic site is formed at the interface between monomers. The candidate nucleophile in the transposition mechanism, strictly conserved Tyr(121) coming from the other monomer, is turned away from the active site, suggesting that a conformational change is likely to occur during the catalytic cycle.

    Organizational Affiliation: 

    Department of Chemistry, College of Natural Sciences, Seoul National University, Korea.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Transposase, putativeA, B133Saccharolobus solfataricusMutation(s): 0 
UniProt
Find proteins for Q97Y68 (Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2))
Explore Q97Y68 
Go to UniProtKB:  Q97Y68
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ97Y68
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.213 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 93.543α = 90
b = 68.149β = 129.24
c = 65.49γ = 90
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
SOLVEphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-12-13
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance