1ONV

NMR Structure of a Complex Containing the TFIIF Subunit RAP74 and the RNAP II CTD Phosphatase FCP1


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 70 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with acceptable covalent geometry,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

NMR Structure of a Complex Containing the TFIIF Subunit RAP74 and the RNA polymerase II carboxyl-terminal domain phosphatase FCP1

Nguyen, B.D.Abbott, K.L.Potempa, K.Kobor, M.S.Archambault, J.Greenblatt, J.Legault, P.Omichinski, J.G.

(2003) Proc.Natl.Acad.Sci.USA 100: 5688-5693

  • DOI: 10.1073/pnas.1031524100

  • PubMed Abstract: 
  • FCP1 [transcription factor IIF (TFIIF)-associated carboxyl-terminal domain (CTD) phosphatase] is the only identified phosphatase specific for the phosphorylated CTD of RNA polymerase II (RNAP II). The phosphatase activity of FCP1 is enhanced in the p ...

    FCP1 [transcription factor IIF (TFIIF)-associated carboxyl-terminal domain (CTD) phosphatase] is the only identified phosphatase specific for the phosphorylated CTD of RNA polymerase II (RNAP II). The phosphatase activity of FCP1 is enhanced in the presence of the large subunit of TFIIF (RAP74 in humans). It has been demonstrated that the CTD of RAP74 (cterRAP74; residues 436-517) directly interacts with the highly acidic CTD of FCP1 (cterFCP; residues 879-961 in human). In this manuscript, we have determined a high-resolution solution structure of a cterRAP74cterFCP complex by NMR spectroscopy. Interestingly, the cterFCP protein is completely disordered in the unbound state, but forms an alpha-helix (H1'; E945-M961) in the complex. The cterRAP74cterFCP binding interface relies extensively on van der Waals contacts between hydrophobic residues from the H2 and H3 helices of cterRAP74 and hydrophobic residues from the H1' helix of cterFCP. The binding interface also contains two critical electrostatic interactions involving aspartic acid residues from H1' of cterFCP and lysine residues from both H2 and H3 of cterRAP74. There are also three additional polar interactions involving highly conserved acidic residues from the H1' helix. The cterRAP74cterFCP complex is the first high-resolution structure between an acidic residue-rich domain from a holoenzyme-associated regulatory protein and a general transcription factor. The structure defines a clear role for both hydrophobic and acidic residues in proteinprotein complexes involving acidic residue-rich domains in transcription regulatory proteins.


    Organizational Affiliation

    Department of Biochemistry, University of Georgia, Athens, GA 30602, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Transcription initiation factor IIF, alpha subunit
A
82Homo sapiensMutation(s): 0 
Gene Names: GTF2F1 (RAP74)
Find proteins for P35269 (Homo sapiens)
Go to Gene View: GTF2F1
Go to UniProtKB:  P35269
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
serine phosphatase FCP1a
B
83Homo sapiensMutation(s): 0 
Gene Names: CTDP1 (FCP1)
EC: 3.1.3.16
Find proteins for Q9Y5B0 (Homo sapiens)
Go to Gene View: CTDP1
Go to UniProtKB:  Q9Y5B0
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 70 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with acceptable covalent geometry,structures with the least restraint violations,structures with the lowest energy 
  • Olderado: 1ONV Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-05-20
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance