4F4U

The bicyclic intermediate structure provides insights into the desuccinylation mechanism of SIRT5


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.218 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The Bicyclic Intermediate Structure Provides Insights into the Desuccinylation Mechanism of Human Sirtuin 5 (SIRT5)

Zhou, Y.Zhang, H.He, B.Du, J.Lin, H.Cerione, R.A.Hao, Q.

(2012) J.Biol.Chem. 287: 28307-28314

  • DOI: 10.1074/jbc.M112.384511
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Sirtuins are pivotal regulators in various cellular processes, including transcription, DNA repair, genome stability, and energy metabolism. Their functions have been generally attributed to NAD-dependent deacetylase activity. However, human SIRT5 (s ...

    Sirtuins are pivotal regulators in various cellular processes, including transcription, DNA repair, genome stability, and energy metabolism. Their functions have been generally attributed to NAD-dependent deacetylase activity. However, human SIRT5 (sirtuin 5), which has been reported to exhibit little deacetylase activity, was recently identified as an NAD-dependent demalonylase and desuccinylase. Biochemical studies suggested that the mechanism of SIRT5-catalyzed demalonylation and desuccinylation is similar to that of deacetylation catalyzed by other sirtuins. Previously, we solved the crystal structure of a SIRT5-succinyl-lysine peptide-NAD complex. Here, we present two more structures: a binary complex of SIRT5 with an H3K9 succinyl peptide and a binary complex of SIRT5 with a bicyclic intermediate obtained by incubating SIRT5-H3K9 thiosuccinyl peptide co-crystals with NAD. To our knowledge, this represents the first bicyclic intermediate for a sirtuin-catalyzed deacylation reaction that has been captured in a crystal structure, thus providing unique insights into the reaction mechanism. The structural information should benefit the design of specific inhibitors for SIRT5 and help in exploring the therapeutic potential of targeting sirtuins for treating human diseases.


    Organizational Affiliation

    MacCHESS, Cornell High Energy Synchrotron Source, Cornell University, Ithaca, New York 14853, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NAD-dependent lysine demalonylase and desuccinylase sirtuin-5, mitochondrial
A, B
273Homo sapiensMutation(s): 0 
Gene Names: SIRT5 (SIR2L5)
EC: 3.5.1.-
Find proteins for Q9NXA8 (Homo sapiens)
Go to Gene View: SIRT5
Go to UniProtKB:  Q9NXA8
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
peptide from Histone H3.1
C, D
12Homo sapiensMutation(s): 0 
Gene Names: HIST1H3A, HIST1H3B, HIST1H3C, HIST1H3D, HIST1H3E, HIST1H3F, HIST1H3G, HIST1H3H, HIST1H3I, HIST1H3J (H3FA, H3FL, H3FC, H3FB, H3FD, H3FI, H3FH, H3FK, H3FF, H3FJ)
Find proteins for P68431 (Homo sapiens)
Go to UniProtKB:  P68431
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SLL
Query on SLL
C, D
L-peptide linkingC10 H18 N2 O5LYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.218 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 52.687α = 90.00
b = 67.025β = 90.00
c = 157.627γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
CrystalCleardata collection
HKL-2000data reduction
MOLREPphasing
SCALEPACKdata scaling
REFMACrefinement
PHENIXrefinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2012-05-11 
  • Released Date: 2012-06-20 
  • Deposition Author(s): Zhou, Y., Hao, Q.

Revision History 

  • Version 1.0: 2012-06-20
    Type: Initial release
  • Version 1.1: 2012-09-19
    Type: Database references
  • Version 1.2: 2017-11-15
    Type: Refinement description