3HFH

Crystal structure of tandem FF domains


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.703 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.230 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structure of the Three Tandem FF Domains of the Transcription Elongation Regulator CA150.

Lu, M.Yang, J.Ren, Z.Sabui, S.Espejo, A.Bedford, M.T.Jacobson, R.H.Jeruzalmi, D.McMurray, J.S.Chen, X.

(2009) J.Mol.Biol. 393: 397-408

  • DOI: 10.1016/j.jmb.2009.07.086

  • PubMed Abstract: 
  • FF domains are small protein-protein interaction modules that have two flanking conserved phenylalanine residues. They are present in proteins involved in transcription, RNA splicing, and signal transduction, and often exist in tandem arrays. Althoug ...

    FF domains are small protein-protein interaction modules that have two flanking conserved phenylalanine residues. They are present in proteins involved in transcription, RNA splicing, and signal transduction, and often exist in tandem arrays. Although several individual FF domain structures have been determined by NMR, the tandem nature of most FF domains has not been revealed. Here we report the 2.7-A-resolution crystal structure of the first three FF domains of the human transcription elongation factor CA150. Each FF domain is composed of three alpha-helices and a 3(10) helix between alpha-helix 2 and alpha-helix 3. The most striking feature of the structure is that an FF domain is connected to the next by an alpha-helix that continues from helix 3 to helix 1 of the next. The consequent elongated arrangement allows exposure of many charged residues within the region that can be engaged in interaction with other molecules. Binding studies using a peptide ligand suggest that a specific conformation of the FF domains might be required to achieve higher-affinity binding. Additionally, we explore potential DNA binding of the FF construct used in this study. Overall, we provide the first crystal structure of an FF domain and insights into the tandem nature of the FF domains and suggest that, in addition to protein binding, FF domains might be involved in DNA binding.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, University of Texas M. D. Anderson Cancer Center, Houston, 77030, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Transcription elongation regulator 1
A, B
190Homo sapiensMutation(s): 0 
Gene Names: TCERG1 (CA150, TAF2S)
Find proteins for O14776 (Homo sapiens)
Go to Gene View: TCERG1
Go to UniProtKB:  O14776
Small Molecules
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
MLY
Query on MLY
A, B
L-PEPTIDE LINKINGC8 H18 N2 O2LYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.703 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.230 
  • Space Group: P 6 2 2
Unit Cell:
Length (Å)Angle (°)
a = 141.300α = 90.00
b = 141.300β = 90.00
c = 155.420γ = 120.00
Software Package:
Software NamePurpose
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-08-18
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-11-01
    Type: Refinement description