4M6T

Structure of human Paf1 and Leo1 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.498 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.232 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural insights into Paf1 complex assembly and histone binding

Chu, X.Qin, X.Xu, H.Li, L.Wang, Z.Li, F.Xie, X.Zhou, H.Shen, Y.Long, J.

(2013) Nucleic Acids Res. 41: 10619-10629

  • DOI: 10.1093/nar/gkt819

  • PubMed Abstract: 
  • The highly conserved Paf1 complex (PAF1C) plays critical roles in RNA polymerase II transcription elongation and in the regulation of histone modifications. It has also been implicated in other diverse cellular activities, including posttranscription ...

    The highly conserved Paf1 complex (PAF1C) plays critical roles in RNA polymerase II transcription elongation and in the regulation of histone modifications. It has also been implicated in other diverse cellular activities, including posttranscriptional events, embryonic development and cell survival and maintenance of embryonic stem cell identity. Here, we report the structure of the human Paf1/Leo1 subcomplex within PAF1C. The overall structure reveals that the Paf1 and Leo1 subunits form a tightly associated heterodimer through antiparallel beta-sheet interactions. Detailed biochemical experiments indicate that Leo1 binds to PAF1C through Paf1 and that the Ctr9 subunit is the key scaffold protein in assembling PAF1C. Furthermore, we show that the Paf1/Leo1 heterodimer is necessary for its binding to histone H3, the histone octamer, and nucleosome in vitro. Our results shed light on the PAF1C assembly process and substrate recognition during various PAF1C-coordinated histone modifications.


    Organizational Affiliation

    State Key Laboratory of Medicinal Chemical Biology, Nankai University, 94 Weijin Road, Tianjin 300071, China, College of Life Sciences, Nankai University, 94 Weijin Road, Tianjin 300071, China and Synergetic Innovation Center of Chemical Science and Engineering, 94 Weijin Road, Tianjin 300071, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RNA polymerase II-associated factor 1 homolog, Linker, RNA polymerase-associated protein LEO1
A
183Homo sapiensMutation(s): 0 
Gene Names: PAF1 (PD2), LEO1 (RDL)
Find proteins for Q8N7H5 (Homo sapiens)
Go to Gene View: PAF1
Go to UniProtKB:  Q8N7H5
Find proteins for Q8WVC0 (Homo sapiens)
Go to Gene View: LEO1
Go to UniProtKB:  Q8WVC0
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SAM
Query on SAM

Download SDF File 
Download CCD File 
A
S-ADENOSYLMETHIONINE
C15 H22 N6 O5 S
MEFKEPWMEQBLKI-FCKMPRQPSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.498 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.232 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 115.168α = 90.00
b = 115.168β = 90.00
c = 157.437γ = 120.00
Software Package:
Software NamePurpose
SHELXSphasing
HKL-2000data reduction
MAR345dtbdata collection
SCALEPACKdata scaling
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2013-08-11 
  • Released Date: 2013-10-02 
  • Deposition Author(s): Shen, Y., Qin, X.

Revision History 

  • Version 1.0: 2013-10-02
    Type: Initial release
  • Version 1.1: 2013-12-25
    Type: Database references
  • Version 1.2: 2017-06-28
    Type: Source and taxonomy