8ccw

Crystal structure of human Sirt3 in complex with an acetylated HIV1 Tat-46-54 substrate peptide

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 118–399 Not recorded Protein Tat × 1 (P12506) ZN ZINC ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293.15 K;10 mg/ml human Sirt3-(118-399) in 20 mM Tris/HCl, pH 8.0, 150 mM NaCl, 5% (v/v) glycerol, 1 mM TCEP were incubated with 2 mM ac-Tat-46-54 for 60 min at 293.15 K. The complex was crystallized using the sitting-drop vapor-diffusion method at 293.15 K with 100 mM MES, pH 6.0, 30% (w/v) PEG 200, 5% (w/v) PEG 3000 as reservoir solution. Resolution 1.65 Å R-free 0.209

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 1–282; UniProt 118–399

Protein Tat

OrganismNot specified

UniProt P12506

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 B; UniProt 46–54 Non-standard monomer:Yes (specific site not provided by mmCIF) NAD-dependent protein deacetylase sirtuin-3, mitochondrial × 1 (Q9NTG7) ZN ZINC ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293.15 K;10 mg/ml human Sirt3-(118-399) in 20 mM Tris/HCl, pH 8.0, 150 mM NaCl, 5% (v/v) glycerol, 1 mM TCEP were incubated with 2 mM ac-Tat-46-54 for 60 min at 293.15 K. The complex was crystallized using the sitting-drop vapor-diffusion method at 293.15 K with 100 mM MES, pH 6.0, 30% (w/v) PEG 200, 5% (w/v) PEG 3000 as reservoir solution. Resolution 1.65 Å R-free 0.209

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.

6 other PDB entries and 8 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name TAT_HV1Z2
Isoform
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 1–9; UniProt 46–54

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 8ccw

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 8ccw
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2. Structure Basics 2. Structure Basics

Entry ID entry_id8ccw
Deposition date deposition_date2023-01-27
Structure title titleCrystal structure of human Sirt3 in complex with an acetylated HIV1 Tat-46-54 substrate peptide
Keywords keywordsSirtuin, substrate, HIV, Tat, complex, SIGNALING PROTEIN; SIGNALING PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier20.68
Radius of gyration Rg (electron density) rg_electron19.41
Forward intensity I(0) i016602300.00
Molecular weight molecular_weight31714.0 kDa
Excluded volume excluded_volume40091 ų
Envelope volume envelope_volume45916 ų
Hydration-shell volume shell_volume20023 ų
Envelope diameter envelope_diameter67.7
Shell Rg shell_rg25.51
Envelope Rg envelope_rg19.48
Shape Rg shape_rg19.36
Total Rg total_rg20.43
Total atoms total_atoms2234
Residues n_residues282
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_real20.62
Rg uncertainty (real space) rg_real_error0.41
I(0) (real space) i0_real1.6600e+07
I(0) uncertainty (real space) i0_real_error2.2080e+05
Rg (reciprocal space) rg_reciprocal20.63
I(0) (reciprocal space) i0_reciprocal16600000.0000
Solution quality estimate total_estimate0.8144
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary24.8
Skewness Skewness skewness0.279
Kurtosis Kurtosis kurtosis-0.346
Angular range angular_range— – 0.3850 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha2811000.0000
Real-space data points n_real_points70
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.864; Stabil: 0.997; Sysdev: 1.000; Positv: 1.000; Valcen: 0.999; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

8. Citations (1)

9. Files and Curves (10)