1JM4

NMR Structure of P/CAF Bromodomain in Complex with HIV-1 Tat Peptide


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 25 
  • Selection Criteria: Back Calculated Data Agree with Experimental NOESY Spectrum, Structures with Acceptable Covalent Geometry, Structures with Favorable Non-bond Energy, Structures with the Least Restraint Violations, Structures with the Lowest Energy 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis of lysine-acetylated HIV-1 Tat recognition by PCAF bromodomain

Mujtaba, S.He, Y.Zeng, L.Farooq, A.Carlson, J.E.Ott, M.Verdin, E.Zhou, M.-M.

(2002) Mol.Cell 9: 575-586


  • PubMed Abstract: 
  • The human immunodeficiency virus type 1 (HIV-1) trans-activator protein Tat stimulates transcription of the integrated HIV-1 genome and promotes viral replication in infected cells. Tat transactivation activity is dependent on lysine acetylation and ...

    The human immunodeficiency virus type 1 (HIV-1) trans-activator protein Tat stimulates transcription of the integrated HIV-1 genome and promotes viral replication in infected cells. Tat transactivation activity is dependent on lysine acetylation and its association with nuclear histone acetyltransferases p300/CBP (CREB binding protein) and p300/CBP-associated factor (PCAF). Here, we show that the bromodomain of PCAF binds specifically to HIV-1 Tat acetylated at lysine 50 and that this interaction competes effectively against HIV-1 TAR RNA binding to the lysine-acetylated Tat. The three-dimensional solution structure of the PCAF bromodomain in complex with a lysine 50-acetylated Tat peptide together with biochemical analyses provides the structural basis for the specificity of this molecular recognition and reveals insights into the differences in ligand selectivity of bromodomains.


    Related Citations: 
    • Structure and Ligand of a Histone Acetyltransferase Bromodomain
      Dhalluin, C.,Carlson, J.E.,Zeng, L.,He, C.,Aggarwal, A.K.,Zhou, M.-M.
      (1999) Nature 399: 491


    Organizational Affiliation

    Structural Biology Program, Department of Physiology and Biophysics, Mount Sinai School of Medicine, New York University, New York, NY 10029, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HIV-1 Tat Peptide
A
11Human immunodeficiency virus type 1 group M subtype BGene Names: tat
Find proteins for P04610 (Human immunodeficiency virus type 1 group M subtype B)
Go to UniProtKB:  P04610
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
P300/CBP-associated Factor
B
118Homo sapiensGene Names: KAT2B (PCAF)
EC: 2.3.1.48
Find proteins for Q92831 (Homo sapiens)
Go to Gene View: KAT2B
Go to UniProtKB:  Q92831
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
ALY
Query on ALY
A
L-PEPTIDE LINKINGC8 H16 N2 O3LYS
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 25 
  • Selection Criteria: Back Calculated Data Agree with Experimental NOESY Spectrum, Structures with Acceptable Covalent Geometry, Structures with Favorable Non-bond Energy, Structures with the Least Restraint Violations, Structures with the Lowest Energy 
  • Olderado: 1JM4 Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-07-17
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance