Crystal Structure of AAV2 Rep40-ADP complex

Experimental Data Snapshot

  • Resolution: 2.10 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.192 

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Structure of adeno-associated virus type 2 Rep40-ADP complex: Insight into nucleotide recognition and catalysis by superfamily 3 helicases

James, J.A.Aggarwal, A.K.Linden, R.M.Escalante, C.R.

(2004) Proc Natl Acad Sci U S A 101: 12455-12460

  • DOI: https://doi.org/10.1073/pnas.0403454101
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    We have determined the structure of adeno-associated virus type 2 (AAV2) Rep40 to 2.1-A resolution with ADP bound at the active site. The complex crystallizes as a monomer with one ADP molecule positioned in an unexpectedly open binding site. The nucleotide-binding pocket consists of the P-loop residues interacting with the phosphates and a loop (nucleoside-binding loop) that emanates from the last strand of the central beta-sheet and interacts with the sugar and base. As a result of the open nature of the binding site, one face of the adenine ring is completely exposed to the solvent, and consequently the number of protein-nucleotide contacts is scarce as compared with other P-loop nucleotide phosphohydrolases. The conformation of the ADP molecule in its binding site bears a resemblance to those found in only three other families of P-loop ATPases: the ATP-binding cassette transporter family, the bacterial RecA proteins, and the type II topoisomerase family. In all these cases, oligomerization is required to attain a competent nucleotide-binding pocket. We propose that this characteristic is native to superfamily 3 helicases and allows for an additional mechanism of regulation by these multifunctional proteins. Furthermore, it explains the strong tendency by members of this family such as simian virus 40 TAg to oligomerize after binding ATP.

  • Organizational Affiliation

    Structural Biology Program, Department of Physiology and Biophysics, and Departments of Gene and Cell Medicine and Microbiology, Mount Sinai School of Medicine, 1 Gustave L. Levy Place, New York, NY 10029, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
DNA replication protein267adeno-associated virus 2Mutation(s): 0 
Gene Names: REP
Find proteins for P03132 (Adeno-associated virus 2 (isolate Srivastava/1982))
Explore P03132 
Go to UniProtKB:  P03132
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP03132
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on ADP

Download Ideal Coordinates CCD File 
C10 H15 N5 O10 P2
Experimental Data & Validation

Experimental Data

  • Resolution: 2.10 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.192 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 71α = 90
b = 71β = 90
c = 95.396γ = 120
Software Package:
Software NamePurpose
HKL-2000data reduction
NOVEL_Rdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-08-24
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-01-31
    Changes: Experimental preparation
  • Version 1.4: 2023-08-23
    Changes: Data collection, Database references, Derived calculations, Refinement description