2O93

Crystal structure of NFAT bound to the HIV-1 LTR tandem kappaB enhancer element


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.05 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.225 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal structure of NFAT bound to the HIV-1 LTR tandem kappaB enhancer element

Bates, D.L.Barthel, K.K.Wu, Y.Kalhor, R.Stroud, J.C.Giffin, M.J.Chen, L.

(2008) Structure 16: 684-694

  • DOI: 10.1016/j.str.2008.01.020

  • PubMed Abstract: 
  • The host factor, nuclear factor of activated T-cells (NFAT), regulates the transcription and replication of HIV-1. Here, we have determined the crystal structure of the DNA binding domain of NFAT bound to the HIV-1 long terminal repeat (LTR) tandem k ...

    The host factor, nuclear factor of activated T-cells (NFAT), regulates the transcription and replication of HIV-1. Here, we have determined the crystal structure of the DNA binding domain of NFAT bound to the HIV-1 long terminal repeat (LTR) tandem kappaB enhancer element at 3.05 A resolution. NFAT binds as a dimer to the upstream kappaB site (Core II), but as a monomer to the 3' end of the downstream kappaB site (Core I). The DNA shows a significant bend near the 5' end of Core I, where a lysine residue from NFAT bound to the 3' end of Core II inserts into the minor groove and seems to cause DNA bases to flip out. Consistent with this structural feature, the 5' end of Core I become hypersensitive to dimethylsulfate in the in vivo footprinting upon transcriptional activation of the HIV-1 LTR. Our studies provide a basis for further investigating the functional mechanisms of NFAT in HIV-1 transcription and replication.


    Organizational Affiliation

    Department of Chemistry and Biochemistry, University of Colorado at Boulder, Boulder, CO 80309-0215, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
actor of activated T-cells, cytoplasmic 2
L, M, O
301Homo sapiensMutation(s): 0 
Gene Names: NFATC2 (NFAT1, NFATP)
Find proteins for Q13469 (Homo sapiens)
Go to Gene View: NFATC2
Go to UniProtKB:  Q13469
Entity ID: 1
MoleculeChainsLengthOrganism
kappaB enhancer element, DNA 25-merA25N/A
Entity ID: 2
MoleculeChainsLengthOrganism
kappaB enhancer element, DNA 25-merB25N/A
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.05 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.225 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 93.691α = 90.00
b = 95.299β = 90.00
c = 159.227γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
CNSphasing
CNSrefinement
SCALEPACKdata scaling
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2006-12-13 
  • Released Date: 2007-06-19 
  • Deposition Author(s): Bates, D.L., Chen, L.

Revision History 

  • Version 1.0: 2007-06-19
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-18
    Type: Refinement description