5BYG

X-ray structure of AAV2 OBD-AAVS1 complex 2:1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.191 

wwPDB Validation   3D Report Full Report


This is version 1.5 of the entry. See complete history


Literature

Structural Insights into the Assembly of the Adeno-associated Virus Type 2 Rep68 Protein on the Integration Site AAVS1.

Musayev, F.N.Zarate-Perez, F.Bishop, C.Burgner, J.W.Escalante, C.R.

(2015) J Biol Chem 290: 27487-27499

  • DOI: 10.1074/jbc.M115.669960
  • Primary Citation of Related Structures:  
    4ZQ9, 5BYG

  • PubMed Abstract: 
  • Adeno-associated virus (AAV) is the only eukaryotic virus with the property of establishing latency by integrating site-specifically into the human genome. The integration site known as AAVS1 is located in chromosome 19 and contains multiple GCTC repeats that are recognized by the AAV non-structural Rep proteins ...

    Adeno-associated virus (AAV) is the only eukaryotic virus with the property of establishing latency by integrating site-specifically into the human genome. The integration site known as AAVS1 is located in chromosome 19 and contains multiple GCTC repeats that are recognized by the AAV non-structural Rep proteins. These proteins are multifunctional, with an N-terminal origin-binding domain (OBD) and a helicase domain joined together by a short linker. As a first step to understand the process of site-specific integration, we proceeded to characterize the recognition and assembly of Rep68 onto the AAVS1 site. We first determined the x-ray structure of AAV-2 Rep68 OBD in complex with the AAVS1 DNA site. Specificity is achieved through the interaction of a glycine-rich loop that binds the major groove and an α-helix that interacts with a downstream minor groove on the same face of the DNA. Although the structure shows a complex with three OBD molecules bound to the AAVS1 site, we show by using analytical centrifugation and electron microscopy that the full-length Rep68 forms a heptameric complex. Moreover, we determined that a minimum of two direct repeats is required to form a stable complex and to melt DNA. Finally, we show that although the individual domains bind DNA poorly, complex assembly requires oligomerization and cooperation between its OBD, helicase, and the linker domains.


    Organizational Affiliation

    Department of Physiology and Biophysics, School of Medicine, Virginia Commonwealth University, Richmond, Virginia 23298 cescalante@vcu.edu.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Protein Rep78A, B, C, D213Adeno-associated virus 2 Srivastava/1982Mutation(s): 2 
Gene Names: Rep78
UniProt
Find proteins for Q89268 (Adeno-associated virus 2 (isolate Srivastava/1982))
Explore Q89268 
Go to UniProtKB:  Q89268
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsLengthOrganismImage
DNA (5'-D(*CP*TP*CP*GP*GP*CP*GP*CP*TP*CP*GP*CP*TP*CP*GP*CP*TP*CP*GP*CP*T)-3')E, G21Homo sapiens
Protein Feature View
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  • Reference Sequence
Find similar nucleic acids by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsLengthOrganismImage
DNA (5'-D(*GP*AP*GP*CP*GP*AP*GP*CP*GP*AP*GP*CP*GP*AP*GP*CP*GP*CP*CP*GP*A)-3')F, H21Homo sapiens
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.191 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 183.136α = 90
b = 79.595β = 98.12
c = 139.502γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01-GM09285

Revision History  (Full details and data files)

  • Version 1.0: 2015-09-23
    Type: Initial release
  • Version 1.1: 2015-09-30
    Changes: Database references
  • Version 1.2: 2015-11-25
    Changes: Database references
  • Version 1.3: 2017-08-09
    Changes: Database references, Derived calculations
  • Version 1.4: 2017-09-13
    Changes: Author supporting evidence
  • Version 1.5: 2019-12-25
    Changes: Author supporting evidence