SAXSdb — 1vpw

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

PURINE REPRESSOR

Escherichia coli

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–DNA Homooligomer Protein × 2 DNA 2 PDB declaration: tetrameric（4） Consistent with all polymer counts	Chain A； UniProt 1–340	Mutation：L54M	;DNA (5'-D(TPAPCPGPCPAPAPAPCPGPTPTPTPGPCPGPT )-3') ; × 2 HPA* HYPOXANTHINE × 2	X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions	Resolution 2.70 Å

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 1VPW	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
1BDH PURINE REPRESSOR MUTANT-HYPOXANTHINE-PALINDROMIC OPERATOR COMPLEX Deposited 1996-07-25	Different mutation/modification	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 1–340（340 aa）	Mutation：K55A	HPA HYPOXANTHINE × 2	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.70 Å
1BDI PURINE REPRESSOR MUTANT-HYPOXANTHINE-PALINDROMIC OPERATOR COMPLEX Deposited 1996-07-25	Different mutation/modification Different structure-quality metrics	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 1–340（340 aa）	Not recorded	HPA HYPOXANTHINE × 2	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 3.00 Å
1DBQ DNA-BINDING REGULATORY PROTEIN Deposited 1996-02-13	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 52–340（289 aa） Fragment：COREPRESSOR-FREE COREPRESSOR-BINDING DOMAIN Chain B 52–340（289 aa） Fragment：COREPRESSOR-FREE COREPRESSOR-BINDING DOMAIN	Not recorded	MG MAGNESIUM ION × 3	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.20 Å
1JFS PURINE REPRESSOR MUTANT-HYPOXANTHINE-PURF OPERATOR COMPLEX Deposited 2001-06-21	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 1–340（340 aa）	Mutation：W147F	HPA HYPOXANTHINE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；295 K；PEG 4000, ammonium phosphate, ammonium sulfate, cobalt hexammine, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K	Resolution 2.90 Å
1JFT PURINE REPRESSOR MUTANT-HYPOXANTHINE-PURF OPERATOR COMPLEX Deposited 2001-06-21	Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 1–340（340 aa）	Mutation：W147A	PO4 PHOSPHATE ION × 2 HPA HYPOXANTHINE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；PEG 4000, ammonuim sulfate, ammonium phosphate, cobalt hexammine, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.50 Å
1JH9 PURINE REPRESSOR MUTANT-HYPOXANTHINE-PURF OPERATOR COMPLEX Deposited 2001-06-27	Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 1–340（340 aa）	Mutation：W147R	PO4 PHOSPHATE ION × 4 HPA HYPOXANTHINE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；PEG 4000, ammonium sulfate, ammonium phosphate, cobalt hexammine, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.55 Å
1JHZ Purine Repressor Mutant Corepressor Binding Domain Structure Deposited 2001-06-28	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 52–340（289 aa） Fragment：COREPRESSOR-FREE COREPRESSOR BINDING DOMAIN (Residues 53-341) Chain B 52–340（289 aa） Fragment：COREPRESSOR-FREE COREPRESSOR BINDING DOMAIN (Residues 53-341)	Mutation：W147F Mutation：W147F	MG MAGNESIUM ION × 3	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.6；298 K；PEG 600, magnesium chloride, Tris HCl, pH 7.6, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.40 Å
1PNR PURINE REPRESSOR-HYPOXANTHINE-PURF-OPERATOR COMPLEX Deposited 1995-03-29	Different mutation/modification Different experimental conditions	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 1–340（340 aa）	Not recorded	HPA HYPOXANTHINE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；VAPOR DIFFUSION, HANGING DROP, temperature 293.00K	Resolution 2.70 Å
1PRU PURINE REPRESSOR DNA-BINDING DOMAIN DNA BINDING Deposited 1995-05-08	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–55（55 aa） Fragment：DNA-BINDING	Not recorded	No recorded non-water small molecule	SOLUTION NMR mmCIF provides none of the parsed conditions	Resolution not provided
1PRV PURINE REPRESSOR DNA-BINDING DOMAIN DNA BINDING Deposited 1995-05-08	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–55（55 aa） Fragment：DNA-BINDING	Not recorded	No recorded non-water small molecule	SOLUTION NMR mmCIF provides none of the parsed conditions	Resolution not provided
1QP0 PURINE REPRESSOR-HYPOXANTHINE-PALINDROMIC OPERATOR COMPLEX Deposited 1999-06-01	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 1–340（340 aa）	Not recorded	HPA HYPOXANTHINE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；PEG 4000, (NH4)2SO4, [Co(NH3)6]Cl3, Na2SO4, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.90 Å
1QP4 PURINE REPRESSOR-HYPOXANTHINE-PALINDROMIC OPERATOR COMPLEX Deposited 1999-06-01	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 1–340（340 aa）	Not recorded	HPA HYPOXANTHINE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；PEG 4000, (NH4)2SO4, [CO(NH3)6]CL3, NA2SO4, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 3.00 Å
1QP7 PURINE REPRESSOR MUTANT-HYPOXANTHINE-PALINDROMIC OPERATOR COMPLEX Deposited 1999-06-01	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 1–340（340 aa）	Mutation：K55A	HPA HYPOXANTHINE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；PEG 4000, (NH4)3PO4, [CO(NH3)6]CL3, NA2SO4, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.90 Å
1QPZ PURINE REPRESSOR-HYPOXANTHINE-PALINDROMIC OPERATOR COMPLEX Deposited 1999-06-01	Different mutation/modification Different structure-quality metrics	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 1–340（340 aa）	Not recorded	HPA HYPOXANTHINE × 2	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.50 Å
1QQA PURINE REPRESSOR MUTANT-HYPOXANTHINE-PALINDROMIC OPERATOR COMPLEX Deposited 1999-06-01	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 1–340（340 aa）	Mutation：K55A	HPA HYPOXANTHINE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；PEG 4000, (NH4)3PO4, (NH4)2SO4, [CO(NH3)6]CL3, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 3.00 Å
1QQB PURINE REPRESSOR MUTANT-HYPOXANTHINE-PALINDROMIC OPERATOR COMPLEX Deposited 1999-06-01	Different mutation/modification Different experimental conditions	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 1–340（340 aa）	Not recorded	HPA HYPOXANTHINE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；PEG 4000, (NH4)3PO4, (NH4)2SO4, [CO(NH3)6]CL3, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.70 Å
1WET STRUCTURE OF THE PURR-GUANINE-PURF OPERATOR COMPLEX Deposited 1997-04-27	Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 1–340（340 aa）	Not recorded	GUN GUANINE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；pH 7.50, VAPOR DIFFUSION, HANGING DROP	Resolution 2.60 Å
1ZAY PURINE REPRESSOR-HYPOXANTHINE-MODIFIED-PURF-OPERATOR COMPLEX Deposited 1998-12-16	Different mutation/modification Different experimental conditions	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 1–340（340 aa）	Not recorded	HPA HYPOXANTHINE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；pH 7.5, VAPOR DIFFUSION, HANGING DROP	Resolution 2.70 Å
2PUA CRYSTAL STRUCTURE OF THE LACI FAMILY MEMBER, PURR, BOUND TO DNA: MINOR GROOVE BINDING BY ALPHA HELICES Deposited 1997-10-04	Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 1–340（340 aa）	Mutation：R190A	6MP 6-METHYLPURINE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.4；293 K；pH 7.40, VAPOR DIFFUSION, HANGING DROP, temperature 293.00K	Resolution 2.90 Å
2PUB CRYSTAL STRUCTURE OF THE LACI FAMILY MEMBER, PURR, BOUND TO DNA: MINOR GROOVE BINDING BY ALPHA HELICES Deposited 1997-10-04	Different mutation/modification Different ligand/ion Different experimental conditions	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 1–340（340 aa）	Mutation：R190A	ADE ADENINE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.4；293 K；pH 7.40, VAPOR DIFFUSION, HANGING DROP, temperature 293.00K	Resolution 2.70 Å
2PUC CRYSTAL STRUCTURE OF THE LACI FAMILY MEMBER, PURR, BOUND TO DNA: MINOR GROOVE BINDING BY ALPHA HELICES Deposited 1997-10-04	Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 1–340（340 aa）	Mutation：R190A	GUN GUANINE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.4；293 K；pH 7.40, VAPOR DIFFUSION, HANGING DROP, temperature 293.00K	Resolution 2.60 Å
2PUD CRYSTAL STRUCTURE OF THE LACI FAMILY MEMBER, PURR, BOUND TO DNA: MINOR GROOVE BINDING BY ALPHA HELICES Deposited 1997-10-04	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 1–340（340 aa）	Mutation：R190Q	HPA HYPOXANTHINE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；293 K；pH 7.50, VAPOR DIFFUSION, HANGING DROP, temperature 293.00K	Resolution 2.60 Å
2PUE CRYSTAL STRUCTURE OF THE LACI FAMILY MEMBER, PURR, BOUND TO DNA: MINOR GROOVE BINDING BY ALPHA HELICES Deposited 1997-10-04	Different mutation/modification Different ligand/ion Different experimental conditions	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 1–340（340 aa）	Mutation：R190Q	ADE ADENINE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.4；293 K；pH 7.40, VAPOR DIFFUSION, HANGING DROP, temperature 293.00K	Resolution 2.70 Å
2PUF CRYSTAL STRUCTURE OF THE LACI FAMILY MEMBER, PURR, BOUND TO DNA: MINOR GROOVE BINDING BY ALPHA HELICES Deposited 1997-10-04	Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 1–340（340 aa）	Mutation：R190Q	GUN GUANINE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.4；293 K；pH 7.40, VAPOR DIFFUSION, HANGING DROP, temperature 293.00K	Resolution 3.00 Å
2PUG CRYSTAL STRUCTURE OF THE LACI FAMILY MEMBER, PURR, BOUND TO DNA: MINOR GROOVE BINDING BY ALPHA HELICES Deposited 1997-10-04	Different mutation/modification Different experimental conditions	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 1–340（340 aa）	Mutation：R190Q	HPA HYPOXANTHINE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.4；293 K；pH 7.40, VAPOR DIFFUSION, HANGING DROP, temperature 293.00K	Resolution 2.70 Å

25 other PDB entries and 25 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	PURR_ECOLI
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain A； PDBConstruct 1–340； UniProt 1–340

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	1vpw
Deposition date deposition_date	1998-02-27
Structure title title	STRUCTURE OF THE PURR MUTANT, L54M, BOUND TO HYPOXANTHINE AND PURF OPERATOR DNA
Keywords keywords	COMPLEX (DNA-BINDING PROTEIN-DNA), DNA-BINDING REGULATORY PROTEIN, MINOR GROOVE BENDING, TRANSCRIPTION-DNA COMPLEX; TRANSCRIPTION/DNA
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	30.03 Å
Radius of gyration Rg (electron density) rg_electron	28.98 Å
Forward intensity I(0) i0	36824100.00
Molecular weight molecular_weight	43150.0 kDa
Excluded volume excluded_volume	52313 Å³
Envelope volume envelope_volume	69302 Å³
Hydration-shell volume shell_volume	22697 Å³
Envelope diameter envelope_diameter	106.5 Å
Shell Rg shell_rg	32.19 Å
Envelope Rg envelope_rg	29.41 Å
Shape Rg shape_rg	28.93 Å
Total Rg total_rg	29.44 Å
Total atoms total_atoms	3007
Residues n_residues	355
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	100.6 Å
Rg (real space) rg_real	30.39 Å
Rg uncertainty (real space) rg_real_error	0.93 Å
I(0) (real space) i0_real	3.6820e+07
I(0) uncertainty (real space) i0_real_error	6.2020e+05
Rg (reciprocal space) rg_reciprocal	30.24 Å
I(0) (reciprocal space) i0_reciprocal	36820000.0000
Solution quality estimate total_estimate	0.8171
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	2
Primary peak position r_peak_primary	24.7 Å
Skewness Skewness skewness	0.531
Kurtosis Kurtosis kurtosis	-0.499
Angular range angular_range	— – 0.2650 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	5026000.0000
Real-space data points n_real_points	54
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.713; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.564; Smooth: 0.917

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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	;DNA (5'-D(TPAPCPGPCPAPAPAPCPGPTPTPTPGPCPGP*T )-3') ;
Molecular weight formula_weight	5202.4 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polydeoxyribonucleotide
Chain IDs strand_id	B
Atom count atom_count	3057

TACGCAAACGTTTGCGT

Entity 2 Entity 2 polymer

Description description	PURINE REPRESSOR
Molecular weight formula_weight	38109.6 kDa
Mutation mutation	L54M
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A

ATIKDVAKRANVSTTTVSHVINKTRFVAEETRNAVWAAIKELHYSPSAVARSMKVNHTKSIGLLATSSEAAYFAEIIEAVEKNCFQKGYTLILGNAWNNLEKQRAYLSMMAQKRVDGLLVMCSEYPEPLLAMLEEYRHIPMVVMDWGEAKADFTDAVIDNAFEGGYMAGRYLIERGHREIGVIPGPLERNTGAGRLAGFMKAMEEAMIKVPESWIVQGDFEPESGYRAMQQILSQPHRPTAVFCGGDIMAMGALCAADEMGLRVPQDVSLIGYDNVRNARYFTPALTTIHQPKDSLGETAFNMLLDRIVNKREEPQSIEVHPRLIERRSVADGPFRDYRR

来源 Source

来源生物 organism	Escherichia coli
NCBI Class编号 ncbi_taxonomy_id	562
宿主生物 host_organism	Escherichia coli

Entity 3 Entity 3 non-polymer

Description description	HYPOXANTHINE
Molecular weight formula_weight	136.1 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	50

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7. Fold Classification (SCOP + CATH) 5 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1vpwa1
Class class	a — All alpha proteins
Fold Fold fold	a.35 — lambda repressor-like DNA-binding domains
Superfamily Superfamily superfamily	a.35.1 — lambda repressor-like DNA-binding domains
Family Family family	a.35.1.5 — GalR/LacI-like bacterial regulator

Domain ID domain_id	d1vpwa2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.93 — Periplasmic binding protein-like I
Superfamily Superfamily superfamily	c.93.1 — Periplasmic binding protein-like I
Family Family family	c.93.1.1 — L-arabinose binding protein-like

CATH v4.4 (3 domains)

Domain ID domain_id	1vpwA01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	260 — 434 Repressor (Amino-terminal Domain)
Homologous superfamily homologous superfamily	40 — lambda repressor-like DNA-binding domains

Domain ID domain_id	1vpwA02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	2300 — Response regulator

Domain ID domain_id	1vpwA03
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	2300 — Response regulator

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8. Citations (1)

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Unit-cell length a length_a	175.890 Å
Unit-cell length b length_b	94.930 Å
Unit-cell length c length_c	81.900 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	8

Space group space_group	C 2 2 21
Space-group number int_tables_number	20
Crystal system crystal_system	—

Resolution resolution	2.700 Å
Low-resolution limit resolution_low	10.000 Å
R factor r_factor	—
R_work r_work	0.1740
R_free r_free	—

fit	/app/data/saxs_computation/vp/1vpw/1vpw.fit
pddf	/app/data/pr_computation/vp/1vpw/1vpw.pr.out
profile	/app/data/saxs_computation/vp/1vpw/1vpw.dat

STRUCTURE OF THE PURR MUTANT, L54M, BOUND TO HYPOXANTHINE AND PURF OPERATOR DNA

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

PURINE REPRESSOR

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

6. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

来源 Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

7. Fold Classification (SCOP + CATH) 5 domains

SCOP 2.08 (2 domains)

CATH v4.4 (3 domains)

8. Citations (1)

9. Files and Curves (10)

Files (7)

Curves (3)