8HLW

Crystal structure of SIRT3 in complex with H4K16la peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.193 

Starting Model: experimental
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This is version 1.1 of the entry. See complete history


Literature

Identification of SIRT3 as an eraser of H4K16la.

Fan, Z.Liu, Z.Zhang, N.Wei, W.Cheng, K.Sun, H.Hao, Q.

(2023) iScience 26: 107757-107757

  • DOI: https://doi.org/10.1016/j.isci.2023.107757
  • Primary Citation of Related Structures:  
    8HLW, 8HLY

  • PubMed Abstract: 

    Lysine lactylation (Kla) is a novel histone post-translational modification discovered in late 2019. Later, HDAC1-3, were identified as the robust Kla erasers. While the Sirtuin family proteins showed weak eraser activities toward Kla, as reported. However, the catalytic mechanisms and physiological functions of HDACs and Sirtuins are not identical. In this study, we observed that SIRT3 exhibits a higher eraser activity against the H4K16la site than the other human Sirtuins. Crystal structures revealed the detailed binding mechanisms between lactyl-lysine peptides and SIRT3. Furthermore, a chemical probe, p-H4K16laAlk, was developed to capture potential Kla erasers from cell lysates. SIRT3 was captured by this probe and detected via proteomic analysis. And another chemical probe, p-H4K16la-NBD, was developed to detect the eraser-Kla delactylation processes directly via fluorescence indication. Our findings and chemical probes provide new directions for further investigating Kla and its roles in gene transcription regulation.


  • Organizational Affiliation

    Institute of High Energy Physics, CAS, Beijing 100000, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
NAD-dependent protein deacetylase sirtuin-3, mitochondrial281Homo sapiensMutation(s): 0 
Gene Names: SIRT3SIR2L3
EC: 2.3.1.286
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NTG7 (Homo sapiens)
Explore Q9NTG7 
Go to UniProtKB:  Q9NTG7
PHAROS:  Q9NTG7
GTEx:  ENSG00000142082 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9NTG7
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Histone H4 residues 20-278Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P62805 (Homo sapiens)
Explore P62805 
Go to UniProtKB:  P62805
PHAROS:  P62805
Entity Groups  
UniProt GroupP62805
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.193 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 97.449α = 90
b = 97.449β = 90
c = 53.583γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
REFMACphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
The University Grants Committee, Research Grants Council (RGC)Hong Kong--

Revision History  (Full details and data files)

  • Version 1.0: 2023-09-27
    Type: Initial release
  • Version 1.1: 2023-11-15
    Changes: Data collection