SAXSdb — 1q14

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

HST2 protein

Saccharomyces cerevisiae

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 homooligomer Homooligomer Protein × 3 PDB declaration: trimeric（3） Consistent with protein copy count	Chain A； UniProt 1–357	Fragment：histone/protein deacetylase	ZN ZINC ION × 3 CL CHLORIDE ION × 3	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, HANGING DROP；pH 7.5；293 K；PEg4K, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K	Resolution 2.50 Å R-free 0.251

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.

Other PDB	Difference from Current Entry 1Q14	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
1Q17 Structure of the yeast Hst2 protein deacetylase in ternary complex with 2'-O-acetyl ADP ribose and histone peptide Deposited 2003-07-18	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric	Chain A 1–294（294 aa） Fragment：protein deacetylase Chain B 1–294（294 aa） Fragment：protein deacetylase Chain C 1–294（294 aa） Fragment：protein deacetylase	Not recorded	ZN ZINC ION × 3 CL CHLORIDE ION × 4 APR ADENOSINE-5-DIPHOSPHORIBOSE × 3	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；293 K；(NH4)2SO4, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K	Resolution 2.70 Å R-free 0.247
1Q1A Structure of the yeast Hst2 protein deacetylase in ternary complex with 2'-O-acetyl ADP ribose and histone peptide Deposited 2003-07-18	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 5–293（289 aa） Fragment：C-terminla deletion of hst2	Not recorded	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
1SZC Structural basis for nicotinamide cleavage and ADP-ribose transfer by NAD+-dependent Sir2 histone/protein deacetylases Deposited 2004-04-05	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 1–294（294 aa） Fragment：Catalytic core domain	Not recorded	ZN ZINC ION × 1 CL CHLORIDE ION × 1 CNA CARBA-NICOTINAMIDE-ADENINE-DINUCLEOTIDE × 1 GOL GLYCEROL × 4	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION；pH 6.5；293 K；Ammonium Sulfate, Bis-tris, pH 6.5, VAPOR DIFFUSION, temperature 293K	Resolution 1.75 Å R-free 0.239
1SZC Structural basis for nicotinamide cleavage and ADP-ribose transfer by NAD+-dependent Sir2 histone/protein deacetylases Deposited 2004-04-05	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 1–294（294 aa） Fragment：Catalytic core domain	Not recorded	ZN ZINC ION × 2 CL CHLORIDE ION × 2 CNA CARBA-NICOTINAMIDE-ADENINE-DINUCLEOTIDE × 2 GOL GLYCEROL × 8	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION；pH 6.5；293 K；Ammonium Sulfate, Bis-tris, pH 6.5, VAPOR DIFFUSION, temperature 293K	Resolution 1.75 Å R-free 0.239
1SZD Structural basis for nicotinamide cleavage and ADP-ribose transfer by NAD+-dependent Sir2 histone/protein deacetylases Deposited 2004-04-05	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 1–294（294 aa） Fragment：catalytic core domain	Not recorded	CL CHLORIDE ION × 1 ZN ZINC ION × 1 APR ADENOSINE-5-DIPHOSPHORIBOSE × 1 GOL GLYCEROL × 3	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION；pH 6.5；293 K；Ammonium Sulfate, Bis-Tris, pH 6.5, VAPOR DIFFUSION, temperature 293K	Resolution 1.50 Å R-free 0.230
1SZD Structural basis for nicotinamide cleavage and ADP-ribose transfer by NAD+-dependent Sir2 histone/protein deacetylases Deposited 2004-04-05	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 1–294（294 aa） Fragment：catalytic core domain	Not recorded	CL CHLORIDE ION × 2 ZN ZINC ION × 2 APR ADENOSINE-5-DIPHOSPHORIBOSE × 2 GOL GLYCEROL × 6	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION；pH 6.5；293 K；Ammonium Sulfate, Bis-Tris, pH 6.5, VAPOR DIFFUSION, temperature 293K	Resolution 1.50 Å R-free 0.230
2OD2 Crystal Structure of yHst2 I117F mutant bound to carba-NAD+ and an acetylated H4 peptide Deposited 2006-12-21	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 1–294（294 aa） Fragment：Hst2 catalytic core domain, residues 1-294	Mutation：I117F	ZN ZINC ION × 1 CNA CARBA-NICOTINAMIDE-ADENINE-DINUCLEOTIDE × 1 GOL GLYCEROL × 4	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.6；298 K；2.0 M Ammonium Sulfate, 0.1 M sodium citrate, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.00 Å R-free 0.233
2OD2 Crystal Structure of yHst2 I117F mutant bound to carba-NAD+ and an acetylated H4 peptide Deposited 2006-12-21	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 1–294（294 aa） Fragment：Hst2 catalytic core domain, residues 1-294	Mutation：I117F	ZN ZINC ION × 2 CNA CARBA-NICOTINAMIDE-ADENINE-DINUCLEOTIDE × 2 GOL GLYCEROL × 8	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.6；298 K；2.0 M Ammonium Sulfate, 0.1 M sodium citrate, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.00 Å R-free 0.233
2OD7 Crystal Structure of yHst2 bound to the intermediate analogue ADP-HPD, and and aceylated H4 peptide Deposited 2006-12-21	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 1–294（294 aa） Fragment：Hst2 catalytic core domain, residues 1-294	Not recorded	ZN ZINC ION × 1 A1R 5'-O-[(S)-{[(S)-{[(2R,3R,4S)-3,4-DIHYDROXYPYRROLIDIN-2-YL]METHOXY}(HYDROXY)PHOSPHORYL]OXY}(HYDROXY)PHOSPHORYL]ADENOSINE × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；298 K；2.0 M Ammonium Sulfate, 0.1 M sodium citrate, 0.2 M potassium/sodium tartrate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.00 Å R-free 0.234
2OD7 Crystal Structure of yHst2 bound to the intermediate analogue ADP-HPD, and and aceylated H4 peptide Deposited 2006-12-21	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 1–294（294 aa） Fragment：Hst2 catalytic core domain, residues 1-294	Not recorded	ZN ZINC ION × 2 A1R 5'-O-[(S)-{[(S)-{[(2R,3R,4S)-3,4-DIHYDROXYPYRROLIDIN-2-YL]METHOXY}(HYDROXY)PHOSPHORYL]OXY}(HYDROXY)PHOSPHORYL]ADENOSINE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；298 K；2.0 M Ammonium Sulfate, 0.1 M sodium citrate, 0.2 M potassium/sodium tartrate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.00 Å R-free 0.234
2OD9 Structural Basis for Nicotinamide Inhibition and Base Exchange in Sir2 Enzymes Deposited 2006-12-21	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 1–294（294 aa） Fragment：Hst2 catalytic core domain, residues 1-294	Not recorded	ZN ZINC ION × 1 A1R 5'-O-[(S)-{[(S)-{[(2R,3R,4S)-3,4-DIHYDROXYPYRROLIDIN-2-YL]METHOXY}(HYDROXY)PHOSPHORYL]OXY}(HYDROXY)PHOSPHORYL]ADENOSINE × 1 NCA NICOTINAMIDE × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；298 K；2.0 M Ammonium Sulfate, 0.1 M sodium citrate, 0.2 M potassium/sodium tartrate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.05 Å R-free 0.245
2OD9 Structural Basis for Nicotinamide Inhibition and Base Exchange in Sir2 Enzymes Deposited 2006-12-21	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 1–294（294 aa） Fragment：Hst2 catalytic core domain, residues 1-294	Not recorded	ZN ZINC ION × 2 A1R 5'-O-[(S)-{[(S)-{[(2R,3R,4S)-3,4-DIHYDROXYPYRROLIDIN-2-YL]METHOXY}(HYDROXY)PHOSPHORYL]OXY}(HYDROXY)PHOSPHORYL]ADENOSINE × 2 NCA NICOTINAMIDE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；298 K；2.0 M Ammonium Sulfate, 0.1 M sodium citrate, 0.2 M potassium/sodium tartrate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.05 Å R-free 0.245
2QQF Hst2 bound to ADP-HPD and Acetylated histone H4 Deposited 2007-07-26	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 1–294（294 aa）	Not recorded	ZN ZINC ION × 2 A1R 5'-O-[(S)-{[(S)-{[(2R,3R,4S)-3,4-DIHYDROXYPYRROLIDIN-2-YL]METHOXY}(HYDROXY)PHOSPHORYL]OXY}(HYDROXY)PHOSPHORYL]ADENOSINE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.6；298 K；2.0 M Ammonium Sulfate, 100 mM Na citrate and 200 mM K/Na tartrate, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.00 Å R-free 0.253
2QQF Hst2 bound to ADP-HPD and Acetylated histone H4 Deposited 2007-07-26	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 1–294（294 aa）	Not recorded	ZN ZINC ION × 1 A1R 5'-O-[(S)-{[(S)-{[(2R,3R,4S)-3,4-DIHYDROXYPYRROLIDIN-2-YL]METHOXY}(HYDROXY)PHOSPHORYL]OXY}(HYDROXY)PHOSPHORYL]ADENOSINE × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.6；298 K；2.0 M Ammonium Sulfate, 100 mM Na citrate and 200 mM K/Na tartrate, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.00 Å R-free 0.253
2QQG Hst2 bound to ADP-HPD, acetyllated histone H4 and nicotinamide Deposited 2007-07-26	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 1–294（294 aa）	Not recorded	ZN ZINC ION × 1 A1R 5'-O-[(S)-{[(S)-{[(2R,3R,4S)-3,4-DIHYDROXYPYRROLIDIN-2-YL]METHOXY}(HYDROXY)PHOSPHORYL]OXY}(HYDROXY)PHOSPHORYL]ADENOSINE × 1 NCA NICOTINAMIDE × 1	X-RAY DIFFRACTION X-ray crystallization conditions pH 5.6；298 K；2.0 M Ammonium Sulfate, 100 mM Na citrate, pH 5.6, 200 mM K/Na tartrate, VAPOR DIFFUSION, HANGING DROP, temperature 298K, pH 5.60	Resolution 2.05 Å R-free 0.245
2QQG Hst2 bound to ADP-HPD, acetyllated histone H4 and nicotinamide Deposited 2007-07-26	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 1–294（294 aa）	Not recorded	ZN ZINC ION × 2 A1R 5'-O-[(S)-{[(S)-{[(2R,3R,4S)-3,4-DIHYDROXYPYRROLIDIN-2-YL]METHOXY}(HYDROXY)PHOSPHORYL]OXY}(HYDROXY)PHOSPHORYL]ADENOSINE × 2 NCA NICOTINAMIDE × 2	X-RAY DIFFRACTION X-ray crystallization conditions pH 5.6；298 K；2.0 M Ammonium Sulfate, 100 mM Na citrate, pH 5.6, 200 mM K/Na tartrate, VAPOR DIFFUSION, HANGING DROP, temperature 298K, pH 5.60	Resolution 2.05 Å R-free 0.245
7F4E Crystal structure of Hst2 in complex with H3K9bz peptide Deposited 2021-06-18	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 8–294（287 aa）	Not recorded	ZN ZINC ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；289 K；25% (w/v) PEG 1500, 0.1M MMT/Sodium hydroxide	Resolution 1.78 Å R-free 0.216
7F51 Crystal structure of Hst2 in complex with 2'-O-Benzoyl ADP Ribose Deposited 2021-06-21	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 8–294（287 aa）	Not recorded	ZN ZINC ION × 1 BA7 [(2R,3R,4R,5R)-5-[[[[(2R,3S,4R,5R)-5-(6-aminopurin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methoxy-oxidanyl-phosphoryl]oxy-oxidanyl-phosphoryl]oxymethyl]-2,4-bis(oxidanyl)oxolan-3-yl] benzoate × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；289 K；0.2 M Ammonium fluoride, 20% w/v Polyethylene glycol 3350	Resolution 1.98 Å R-free 0.220

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 5–361； UniProt 1–357

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.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	1q14
Deposition date deposition_date	2003-07-18
Structure title title	Structure and autoregulation of the yeast Hst2 homolog of Sir2
Keywords keywords	histone deacetylase, HYDROLASE; HYDROLASE
Experimental Method method	X-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier	21.46 Å
Radius of gyration Rg (electron density) rg_electron	20.47 Å
Forward intensity I(0) i0	17712700.00
Molecular weight molecular_weight	32678.0 kDa
Excluded volume excluded_volume	41265 Å³
Envelope volume envelope_volume	48271 Å³
Hydration-shell volume shell_volume	20219 Å³
Envelope diameter envelope_diameter	77.5 Å
Shell Rg shell_rg	26.53 Å
Envelope Rg envelope_rg	20.70 Å
Shape Rg shape_rg	20.40 Å
Total Rg total_rg	21.56 Å
Total atoms total_atoms	2298
Residues n_residues	289
Spherical-harmonic order n_harmonics	20
q range q_range	— – 0.5000 Å⁻¹
Data points n_points	101
Shell type shell_type	directional
Solvent electron density solvent_density	0.3340 e/Å³
Shell contrast contrast_shell	0.0300 e/Å³
CRYSOL version crysol_version	4.1.3

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

Maximum dimension Dmax dmax	72.2 Å
Rg (real space) rg_real	21.45 Å
Rg uncertainty (real space) rg_real_error	0.52 Å
I(0) (real space) i0_real	1.7710e+07
I(0) uncertainty (real space) i0_real_error	2.4010e+05
Rg (reciprocal space) rg_reciprocal	21.45 Å
I(0) (reciprocal space) i0_reciprocal	17710000.0000
Solution quality estimate total_estimate	0.7886
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	3
Primary peak position r_peak_primary	25.5 Å
Skewness Skewness skewness	0.378
Kurtosis Kurtosis kurtosis	-0.274
Angular range angular_range	— – 0.3700 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	3943000.0000
Real-space data points n_real_points	69
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.756; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.980; Smooth: 0.000

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Description description	HST2 protein
Molecular weight formula_weight	40378.7 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	2411

GMASMSVSTASTEMSVRKIAAHMKSNPNAKVIFMVGAGISTSCGIPDFRSPGTGLYHNLARLKLPYPEAVFDVDFFQSDPLPFYTLAKELYPGNFRPSKFHYLLKLFQDKDVLKRVYTQNIDTLERQAGVKDDLIIEAHGSFAHCHCIGCGKVYPPQVFKSKLAEHPIKDFVKCDVCGELVKPAIVFFGEDLPDSFSETWLNDSEWLREKITTSGKHPQQPLVIVVGTSLAVYPFASLPEEIPRKVKRVLCNLETVGDFKANKRPTDLIVHQYSDEFAEQLVEELGWQEDFEKILTAQGGMGDNSKEQLLEIVHDLENLSLDQSEHESADKKDKKLQRLNGHDSDEDGASNSSSSQKAAKE

来源 Source

来源生物 organism	Saccharomyces cerevisiae
通用名 common_name	;baker's yeast ;
NCBI Class编号 ncbi_taxonomy_id	4932
宿主生物 host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 non-polymer

Description description	ZINC ION
Molecular weight formula_weight	65.4 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	113

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7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1q14a1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.31 — DHS-like NAD/FAD-binding domain
Superfamily Superfamily superfamily	c.31.1 — DHS-like NAD/FAD-binding domain
Family Family family	c.31.1.5 — Sir2 family of transcriptional regulators

Domain ID domain_id	d1q14a2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

CATH v4.4 (2 domains)

Domain ID domain_id	1q14A01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1220 — TPP-binding domain

Domain ID domain_id	1q14A02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1600 — SIR2/SIRT2 'Small Domain'
Homologous superfamily homologous superfamily	10 — SIR2/SIRT2 'Small Domain'

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8. Citations (1)

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Unit-cell length a length_a	103.554 Å
Unit-cell length b length_b	103.554 Å
Unit-cell length c length_c	177.346 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	18

Space group space_group	H 3 2
Space-group number int_tables_number	155
Crystal system crystal_system	—

Resolution resolution	2.500 Å
Low-resolution limit resolution_low	50.000 Å
R factor r_factor	0.2390
R_work r_work	0.2190
R_free r_free	0.2510

fit	/app/data/saxs_computation/q1/1q14/1q14.fit
pddf	/app/data/pr_computation/q1/1q14/1q14.pr.out
profile	/app/data/saxs_computation/q1/1q14/1q14.dat

Structure and autoregulation of the yeast Hst2 homolog of Sir2

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

HST2 protein

State in the Current Structure

Other States of the Same Protein in the Database

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution

2. Structure Basics 2. Structure Basics

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

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

5. Crystallography and Experiment 5. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction