9s27

Crystal structure of human SIRT3 in complex with the covalent adduct of peptide triazole inhibitor LTDi1 and ADP-ribose

Method: X-RAY DIFFRACTION Dmax: 65.9 Å Quality: GOOD

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

NAD-dependent protein deacetylase sirtuin-3, mitochondrial

Homo sapiens

UniProt Q9NTG7

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 118–395 Fragment:UNP residues 118-395 TNFa-derived lysine triazole dodecyl inhibitor × 1 ZN ZINC ION × 1 BU3 (R,R)-2,3-BUTANEDIOL × 2 A1JK8 [[(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-dodecyl-3-propyl-1,2,3$l^{4}-triazacyclopenta-2,4-dien-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 SIRT3-[LTDi1-ADPR] complex (10.0 mg/mL SIRT3, 15 mM NAD+, 3 mM of LTDi1 with 1.5 % (v/v) final DMSO concentration) formed after 2 days in wells with an equal volume of 300 nL protein solution and 300 nL reservoir solution containing 3 M NaCl in 0.1 M Tris at pH 8.5. Resolution 1.60 Å R-free 0.194

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.

43 other PDB entries and 90 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name SIR3_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 4–281; UniProt 118–395

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 9s27

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9s27
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9s27
Deposition date deposition_date2025-07-21
Structure title titleCrystal structure of human SIRT3 in complex with the covalent adduct of peptide triazole inhibitor LTDi1 and ADP-ribose
Keywords keywordsSirtuins, Mechanistic Inhibitor, Deacetylation, Covalent adduct, HYDROLASE; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier20.29
Radius of gyration Rg (electron density) rg_electron19.40
Forward intensity I(0) i032779400.00
Molecular weight molecular_weight29684.0 kDa
Excluded volume excluded_volume28806 ų
Envelope volume envelope_volume45856 ų
Hydration-shell volume shell_volume19988 ų
Envelope diameter envelope_diameter66.3
Shell Rg shell_rg25.66
Envelope Rg envelope_rg19.56
Shape Rg shape_rg19.33
Total Rg total_rg20.17
Total atoms total_atoms2249
Residues n_residues279
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 dmax65.9
Rg (real space) rg_real20.26
Rg uncertainty (real space) rg_real_error0.30
I(0) (real space) i0_real3.2780e+07
I(0) uncertainty (real space) i0_real_error4.1930e+05
Rg (reciprocal space) rg_reciprocal20.27
I(0) (reciprocal space) i0_reciprocal32780000.0000
Solution quality estimate total_estimate0.8867
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary23.6
Skewness Skewness skewness0.342
Kurtosis Kurtosis kurtosis-0.296
Angular range angular_range— – 0.3900 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha4677000.0000
Real-space data points n_real_points71
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.842; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 1.000; Smooth: 0.997

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

8. Citations (1)

9. Files and Curves (10)