1q1a

Structure of the yeast Hst2 protein deacetylase in ternary complex with 2'-O-acetyl ADP ribose and histone peptide

Method: X-RAY DIFFRACTION Dmax: 69.6 Å Quality: GOOD

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

HST2 protein

Saccharomyces cerevisiae

UniProt P53686

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 5–293 Fragment:C-terminla deletion of hst2 Histone H4 × 1 (P02309) ZN ZINC ION × 1 OAD 2'-O-ACETYL ADENOSINE-5-DIPHOSPHORIBOSE × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 5.6;294 K;PEG 4K, , pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 294K Resolution 1.50 Å R-free 0.210

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.

11 other PDB entries and 18 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name HST2_YEAST
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–289; UniProt 5–293

Histone H4

OrganismNot specified

UniProt P02309

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 12–21 Fragment:Residues 12-21 Non-standard monomer:Yes (specific site not provided by mmCIF) HST2 protein × 1 (P53686) ZN ZINC ION × 1 OAD 2'-O-ACETYL ADENOSINE-5-DIPHOSPHORIBOSE × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 5.6;294 K;PEG 4K, , pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 294K Resolution 1.50 Å R-free 0.210

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 63 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name H4_YEAST
Isoform
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 1–10; UniProt 12–21

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 1q1a

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1q1a
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1q1a
Deposition date deposition_date2003-07-18
Structure title titleStructure of the yeast Hst2 protein deacetylase in ternary complex with 2'-O-acetyl ADP ribose and histone peptide
Keywords keywords;ternary complex, histone deacetylase, 2'-O-ADP ribose, GENE REGULATION ;; GENE REGULATION
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier20.77
Radius of gyration Rg (electron density) rg_electron19.78
Forward intensity I(0) i019293400.00
Molecular weight molecular_weight34033.0 kDa
Excluded volume excluded_volume42843 ų
Envelope volume envelope_volume48949 ų
Hydration-shell volume shell_volume20794 ų
Envelope diameter envelope_diameter70.4
Shell Rg shell_rg26.26
Envelope Rg envelope_rg20.12
Shape Rg shape_rg19.73
Total Rg total_rg20.83
Total atoms total_atoms2395
Residues n_residues294
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 dmax69.6
Rg (real space) rg_real20.73
Rg uncertainty (real space) rg_real_error0.42
I(0) (real space) i0_real1.9290e+07
I(0) uncertainty (real space) i0_real_error2.4560e+05
Rg (reciprocal space) rg_reciprocal20.74
I(0) (reciprocal space) i0_reciprocal19290000.0000
Solution quality estimate total_estimate0.8673
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary25.2
Skewness Skewness skewness0.353
Kurtosis Kurtosis kurtosis-0.217
Angular range angular_range— – 0.3850 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha4305000.0000
Real-space data points n_real_points70
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.768; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.999; Smooth: 0.970

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

7. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd1q1aa_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.31 — DHS-like NAD/FAD-binding domain
Superfamily Superfamily superfamilyc.31.1 — DHS-like NAD/FAD-binding domain
Family Family familyc.31.1.5 — Sir2 family of transcriptional regulators

CATH v4.4 (2 domains)

Domain ID domain_id1q1aA01
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily1220 — TPP-binding domain
Domain ID domain_id1q1aA02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology1600 — SIR2/SIRT2 'Small Domain'
Homologous superfamily homologous superfamily10 — SIR2/SIRT2 'Small Domain'

8. Citations (2)

9. Files and Curves (10)