9s22

Crystal structure of human SIRT2 in complex with the covalent adduct of SirReal-triazole inhibitor LG023 and ADP-ribose

Method: X-RAY DIFFRACTION Dmax: 69.4 Å Quality: GOOD

1. Protein Identity and Related Structures Protein Identity & Related Structures

NAD-dependent protein deacetylase sirtuin-2

Homo sapiens

UniProt Q8IXJ6

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 56–356 Fragment:UNP residues 56-356 ZN ZINC ION × 1 A1JK2 [[(2~{R},3~{S},4~{R},5~{R})-5-(6-aminopurin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methoxy-oxidanyl-phosphoryl] [(2~{R},3~{S},4~{R},5~{S})-5-[5-[[3-[[2-[2-(4,6-dimethylpyrimidin-2-yl)sulfanylethanoylamino]-1,3-thiazol-5-yl]methyl]phenoxy]methyl]-1,2,3-triazol-1-yl]-3,4-bis(oxidanyl)oxolan-2-yl]methyl hydrogen phosphate × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293 K;Crystals of the SIRT2-[LG023-ADPR] complex (11.4 mg/mL SIRT2, 10 mM NAD+, 3.33 mM of compound LG023 with 3.33 % (v/v) final DMSO concentration) formed after three days, with a reservoir solution containing 25 % (w/v) PEG 3350 and 0.2 M MgCl2 x 6H2O in 0.1 M Tris at pH 8.5. Resolution 1.95 Å R-free 0.214

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

77 other PDB entries and 97 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name SIR2_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 4–304; UniProt 56–356

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

SAXS scattering curve SAXS Profile

SAXS profile for 9s22

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9s22
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9s22
Deposition date deposition_date2025-07-21
Structure title titleCrystal structure of human SIRT2 in complex with the covalent adduct of SirReal-triazole inhibitor LG023 and ADP-ribose
Keywords keywordsSirtuins, Inhibitor, Covalent adduct, Deacetylation, HYDROLASE; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier20.64
Radius of gyration Rg (electron density) rg_electron19.86
Forward intensity I(0) i039501500.00
Molecular weight molecular_weight32578.0 kDa
Excluded volume excluded_volume31517 ų
Envelope volume envelope_volume50203 ų
Hydration-shell volume shell_volume21140 ų
Envelope diameter envelope_diameter70.8
Shell Rg shell_rg26.38
Envelope Rg envelope_rg20.19
Shape Rg shape_rg19.84
Total Rg total_rg20.53
Total atoms total_atoms2451
Residues n_residues300
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax69.4
Rg (real space) rg_real20.59
Rg uncertainty (real space) rg_real_error0.42
I(0) (real space) i0_real3.9500e+07
I(0) uncertainty (real space) i0_real_error4.9520e+05
Rg (reciprocal space) rg_reciprocal20.60
I(0) (reciprocal space) i0_reciprocal39500000.0000
Solution quality estimate total_estimate0.8763
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary24.1
Skewness Skewness skewness0.332
Kurtosis Kurtosis kurtosis-0.292
Angular range angular_range— – 0.3850 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha6352000.0000
Real-space data points n_real_points70
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.803; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.996; Smooth: 0.984

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

8. Citations (1)

9. Files and Curves (10)