3P8B

X-ray crystal structure of Pyrococcus furiosus transcription elongation factor Spt4/5


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.236 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

RNA polymerase and transcription elongation factor Spt4/5 complex structure.

Klein, B.J.Bose, D.Baker, K.J.Yusoff, Z.M.Zhang, X.Murakami, K.S.

(2011) Proc.Natl.Acad.Sci.USA 108: 546-550

  • DOI: 10.1073/pnas.1013828108

  • PubMed Abstract: 
  • Spt4/5 in archaea and eukaryote and its bacterial homolog NusG is the only elongation factor conserved in all three domains of life and plays many key roles in cotranscriptional regulation and in recruiting other factors to the elongating RNA polymer ...

    Spt4/5 in archaea and eukaryote and its bacterial homolog NusG is the only elongation factor conserved in all three domains of life and plays many key roles in cotranscriptional regulation and in recruiting other factors to the elongating RNA polymerase. Here, we present the crystal structure of Spt4/5 as well as the structure of RNA polymerase-Spt4/5 complex using cryoelectron microscopy reconstruction and single particle analysis. The Spt4/5 binds in the middle of RNA polymerase claw and encloses the DNA, reminiscent of the DNA polymerase clamp and ring helicases. The transcription elongation complex model reveals that the Spt4/5 is an upstream DNA holder and contacts the nontemplate DNA in the transcription bubble. These structures reveal that the cellular RNA polymerases also use a strategy of encircling DNA to enhance its processivity as commonly observed for many nucleic acid processing enzymes including DNA polymerases and helicases.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, PA 16802, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerase, subunit e''
A, C
81Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1)Mutation(s): 0 
Gene Names: spt4
Find proteins for Q8U440 (Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1))
Go to UniProtKB:  Q8U440
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Transcription antitermination protein nusG
B, D
152Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1)Mutation(s): 0 
Gene Names: spt5
Find proteins for Q8TZK1 (Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1))
Go to UniProtKB:  Q8TZK1
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, C
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
GOL
Query on GOL

Download SDF File 
Download CCD File 
B, D
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
BME
Query on BME

Download SDF File 
Download CCD File 
A, B, D
BETA-MERCAPTOETHANOL
C2 H6 O S
DGVVWUTYPXICAM-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.236 
  • Space Group: P 2 21 21
Unit Cell:
Length (Å)Angle (°)
a = 40.532α = 90.00
b = 87.213β = 90.00
c = 133.107γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
HKL-2000data reduction
REFMACrefinement
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-01-26
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance