9s23

Crystal structure of human SIRT2 in complex with peptide triazole inhibitor OTDi1

Method: X-RAY DIFFRACTION Dmax: 70.9 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 heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 56–356 Fragment:UNP residues 56-356 TNFa-derived ornithine triazole dodecyl inhibitor × 1 ZN ZINC ION × 1 EDO 1,2-ETHANEDIOL × 1 A1JK5 4-dodecyl-1-ethyl-1,2,3-triazole × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293 K;Crystals of the SIRT2-OTDi1 complex (11.0 mg/mL SIRT2, 5 mM of OTDi1 with 2.5 % (v/v) final DMSO concentration) formed after one day in wells with an equal volume of protein solution and reservoir solution containing 21.5 % (w/v) PEG 3350 in 0.1 M Bis-Tris at pH 6.7. Resolution 2.30 Å R-free 0.259

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 9s23

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9s23
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9s23
Deposition date deposition_date2025-07-21
Structure title titleCrystal structure of human SIRT2 in complex with peptide triazole inhibitor OTDi1
Keywords keywordsSirtuins, Inhibitor, Deacetylation, HYDROLASE; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier20.91
Radius of gyration Rg (electron density) rg_electron20.08
Forward intensity I(0) i033715300.00
Molecular weight molecular_weight30263.0 kDa
Excluded volume excluded_volume29447 ų
Envelope volume envelope_volume47770 ų
Hydration-shell volume shell_volume20285 ų
Envelope diameter envelope_diameter72.7
Shell Rg shell_rg26.31
Envelope Rg envelope_rg20.29
Shape Rg shape_rg20.04
Total Rg total_rg20.79
Total atoms total_atoms2285
Residues n_residues284
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 dmax70.9
Rg (real space) rg_real20.90
Rg uncertainty (real space) rg_real_error0.43
I(0) (real space) i0_real3.3720e+07
I(0) uncertainty (real space) i0_real_error4.4440e+05
Rg (reciprocal space) rg_reciprocal20.90
I(0) (reciprocal space) i0_reciprocal33720000.0000
Solution quality estimate total_estimate0.8736
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary23.6
Skewness Skewness skewness0.369
Kurtosis Kurtosis kurtosis-0.307
Angular range angular_range— – 0.3800 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha5146000.0000
Real-space data points n_real_points70
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.797; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.983; Smooth: 0.980

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

8. Citations (1)

9. Files and Curves (10)