SAXSdb — 1ah8

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

HEAT SHOCK PROTEIN 90

OrganismNot specified

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	HSP82_YEAST
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–220； UniProt 1–220 Author chain B； PDBConstruct 1–220； UniProt 1–220

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	1ah8
Deposition date deposition_date	1997-04-14
Structure title title	STRUCTURE OF THE ORTHORHOMBIC FORM OF THE N-TERMINAL DOMAIN OF THE YEAST HSP90 CHAPERONE
Keywords keywords	CHAPERONE, ATP-BINDING, HEAT SHOCK; 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.

1ah8__assembly_1__model_1

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

Download this curve (.dat)

1ah8__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1ah8__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	26.11 Å
Rg (electron density)	25.31 Å
Total Rg	26.09 Å
Atom count	3456
Residues	433
Excluded volume	62026 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1ah8__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 (3)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1ah8a_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.122 — ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase
Superfamily Superfamily superfamily	d.122.1 — ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase
Family Family family	d.122.1.1 — Heat shock protein 90, HSP90, N-terminal domain

Domain ID domain_id	d1ah8b_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.122 — ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase
Superfamily Superfamily superfamily	d.122.1 — ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase
Family Family family	d.122.1.1 — Heat shock protein 90, HSP90, N-terminal domain

CATH v4.4 (2 domains)

Domain ID domain_id	1ah8A00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	565 — Heat Shock Protein 90
Homologous superfamily homologous superfamily	10 — Histidine kinase-like ATPase, C-terminal domain

Domain ID domain_id	1ah8B00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	565 — Heat Shock Protein 90
Homologous superfamily homologous superfamily	10 — Histidine kinase-like ATPase, C-terminal domain

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Unit-cell length a length_a	115.540 Å
Unit-cell length b length_b	112.900 Å
Unit-cell length c length_c	44.720 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	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.100 Å
Low-resolution limit resolution_low	8.000 Å
R factor r_factor	0.1960
R_work r_work	0.1960
R_free r_free	0.2550

Description description	HEAT SHOCK PROTEIN 90
Molecular weight formula_weight	24873.4 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	3986

STRUCTURE OF THE ORTHORHOMBIC FORM OF THE N-TERMINAL DOMAIN OF THE YEAST HSP90 CHAPERONE

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

HEAT SHOCK PROTEIN 90

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

1ah8__assembly_1__model_1

1ah8__assembly_1__model_1 | I(q)

1ah8__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (2)

Description description	GLYCEROL
Molecular weight formula_weight	92.1 kDa
Source method src_method	syn
Copy count entity_count	4

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	530

STRUCTURE OF THE ORTHORHOMBIC FORM OF THE N-TERMINAL DOMAIN OF THE YEAST HSP90 CHAPERONE

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

HEAT SHOCK PROTEIN 90

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

1ah8__assembly_1__model_1

1ah8__assembly_1__model_1 | I(q)

1ah8__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (2)