4IAO

Crystal structure of Sir2 C543S mutant in complex with SID domain of Sir4


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.901 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.227 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural basis for allosteric stimulation of Sir2 activity by Sir4 binding

Hsu, H.C.Wang, C.L.Wang, M.Yang, N.Chen, Z.Sternglanz, R.Xu, R.M.

(2013) Genes Dev. 27: 64-73

  • DOI: 10.1101/gad.208140.112

  • PubMed Abstract: 
  • The budding yeast Sir2 (silent information regulator 2) protein is the founding member of the sirtuin family of NAD-dependent histone/protein deacetylases. Its function in transcriptional silencing requires both the highly conserved catalytic domain ...

    The budding yeast Sir2 (silent information regulator 2) protein is the founding member of the sirtuin family of NAD-dependent histone/protein deacetylases. Its function in transcriptional silencing requires both the highly conserved catalytic domain and a poorly understood N-terminal regulatory domain (Sir2N). We determined the structure of Sir2 in complex with a fragment of Sir4, a component of the transcriptional silencing complex in Saccharomyces cerevisiae. The structure shows that Sir4 is anchored to Sir2N and contacts the interface between the Sir2N and the catalytic domains through a long loop. We discovered that the interaction between the Sir4 loop and the interdomain interface in Sir2 is critical for allosteric stimulation of the deacetylase activity of Sir2. These results bring to light the structure and function of the regulatory domain of Sir2, and the knowledge should be useful for understanding allosteric regulation of sirtuins in general.


    Organizational Affiliation

    National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NAD-dependent histone deacetylase SIR2
A, B
492Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Gene Names: SIR2 (MAR1)
EC: 3.5.1.-
Find proteins for P06700 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P06700
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Regulatory protein SIR4
C, D
159Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Gene Names: SIR4 (ASD1, STE9, UTH2)
Find proteins for P11978 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P11978
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
APR
Query on APR

Download SDF File 
Download CCD File 
A, B
ADENOSINE-5-DIPHOSPHORIBOSE
C15 H23 N5 O14 P2
SRNWOUGRCWSEMX-KEOHHSTQSA-N
 Ligand Interaction
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.901 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.227 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 166.406α = 90.00
b = 178.752β = 90.00
c = 121.564γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
SHARPphasing
HKL-2000data reduction
ADSCdata collection
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-12-26
    Type: Initial release
  • Version 1.1: 2013-01-23
    Type: Database references