1S9H

Crystal Structure of Adeno-associated virus Type 2 Rep40


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.227 
  • R-Value Observed: 0.227 

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This is version 1.2 of the entry. See complete history


Literature

Crystal Structure of the SF3 Helicase from Adeno-Associated Virus Type 2

James, J.A.Escalante, C.R.Yoon-Robarts, M.Edwards, T.A.Linden, R.M.Aggarwal, A.K.

(2003) Structure 11: 1025-1035

  • DOI: 10.1016/s0969-2126(03)00152-7
  • Primary Citation of Related Structures:  
    1S9H

  • PubMed Abstract: 
  • We report here the crystal structure of an SF3 DNA helicase, Rep40, from adeno-associated virus 2 (AAV2). We show that AAV2 Rep40 is structurally more similar to the AAA(+) class of cellular proteins than to DNA helicases from other superfamilies. The structure delineates the expected Walker A and B motifs, but also reveals an unexpected "arginine finger" that directly implies the requirement of Rep40 oligomerization for ATP hydrolysis and helicase activity ...

    We report here the crystal structure of an SF3 DNA helicase, Rep40, from adeno-associated virus 2 (AAV2). We show that AAV2 Rep40 is structurally more similar to the AAA(+) class of cellular proteins than to DNA helicases from other superfamilies. The structure delineates the expected Walker A and B motifs, but also reveals an unexpected "arginine finger" that directly implies the requirement of Rep40 oligomerization for ATP hydrolysis and helicase activity. Further, the Rep40 AAA(+) domain is novel in that it is unimodular as opposed to bimodular. Altogether, the structural connection to AAA(+) proteins defines the general architecture of SF3 DNA helicases, a family that includes simian virus 40 (SV40) T antigen, as well as provides a conceptual framework for understanding the role of Rep proteins during AAV DNA replication, packaging, and site-specific integration.


    Organizational Affiliation

    Carl C. Icahn Center for Gene Therapy and Molecular Medicine, Mount Sinai School of Medicine, 1425 Madison Avenue, New York, NY 10029, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Rep 40 protein ABC268Adeno-associated virus - 2Mutation(s): 0 
Gene Names: REP
EC: 3.6.4.12
Find proteins for P03132 (Adeno-associated virus 2 (isolate Srivastava/1982))
Explore P03132 
Go to UniProtKB:  P03132
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.227 
  • R-Value Observed: 0.227 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 126.294α = 90
b = 126.294β = 90
c = 97.894γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
CNSphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-05-25
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance