SAXSdb — 1i7f

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

HEAT SHOCK PROTEIN 33

Escherichia coli

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	SULFATE ION × 4 GLYCEROL × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	HSLO_ECOLI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–292； UniProt 1–292

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	1i7f
Deposition date deposition_date	2001-03-09
Structure title title	CRYSTAL STRUCTURE OF THE HSP33 DOMAIN WITH CONSTITUTIVE CHAPERONE ACTIVITY
Keywords keywords	Hsp33, redox sensitive molecular chaperone, CHAPERONE; CHAPERONE
Experimental Method method	X-RAY DIFFRACTION

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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

1i7f__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1i7f__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1i7f__assembly_1__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	25.14 Å
Rg (electron density)	24.02 Å
Total Rg	24.72 Å
Atom count	3602
Residues	446
Excluded volume	63783 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1i7f__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download

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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Description description	HEAT SHOCK PROTEIN 33
Molecular weight formula_weight	32885.5 kDa
Mutation mutation	C141D, C239S
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	1816

MPQHDQLHRYLFENFAVRGELVTVSETLQQILENHDYPQPVKNVLAELLVATSLLTATLKFDGDITVQLQGDGPMNLAVINGNNNQQMRGVARVQGEIPENADLKTLVGNGYVVITITPSEGERYQGVVGLEGDTLAADLEDYFMRSEQLPTRLFIRTGDVDGKPAAGGMLLQVMPAQNAQQDDFDHLATLTETIKTEELLTLPANEVLWRLYHEEEVTVYDPQDVEFKCTCSRERSADALKTLPDEEVDSILAEDGEIDMHCDYCGNHYLFNAMDIAEIRNNASPADPQVH

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli BL21

Entity 2 Entity 2 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 non-polymer

Description description	GLYCEROL
Molecular weight formula_weight	92.1 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	15

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6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1i7fa_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.193 — Hsp33 domain
Superfamily Superfamily superfamily	d.193.1 — Hsp33 domain
Family Family family	d.193.1.1 — Hsp33 domain

CATH v4.4 (2 domains)

Domain ID domain_id	1i7fA01
Class class	3 — Alpha Beta
Architecture architecture	55 — 3-Layer(bab) Sandwich
Topology topology	30 — Hsp33 domain
Homologous superfamily homologous superfamily	10 — Hsp33 domain

Domain ID domain_id	1i7fA02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	287 — Helix Hairpins
Homologous superfamily homologous superfamily	480 — helix hairpin bin

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Unit-cell length a length_a	77.293 Å
Unit-cell length b length_b	77.293 Å
Unit-cell length c length_c	193.893 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	12

Space group space_group	P 65 2 2
Space-group number int_tables_number	179
Crystal system crystal_system	—

Resolution resolution	2.700 Å
Low-resolution limit resolution_low	99.000 Å
R factor r_factor	—
R_work r_work	0.2220
R_free r_free	0.2900

CRYSTAL STRUCTURE OF THE HSP33 DOMAIN WITH CONSTITUTIVE CHAPERONE ACTIVITY

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

HEAT SHOCK PROTEIN 33

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

1i7f__assembly_1__model_1

1i7f__assembly_1__model_1 | I(q)

1i7f__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (1 domains)

CATH v4.4 (2 domains)

7. Citations (1)

CRYSTAL STRUCTURE OF THE HSP33 DOMAIN WITH CONSTITUTIVE CHAPERONE ACTIVITY

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

HEAT SHOCK PROTEIN 33

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

1i7f__assembly_1__model_1

1i7f__assembly_1__model_1 | I(q)

1i7f__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (1 domains)

CATH v4.4 (2 domains)

7. Citations (1)