1iok

CRYSTAL STRUCTURE OF CHAPERONIN-60 FROM PARACOCCUS DENITRIFICANS

Method: X-RAY DIFFRACTION

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

CHAPERONIN 60

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 7	No other associated polymer	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 14	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CH60_PARDE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–545； UniProt 1–545 Author chain B； PDBConstruct 1–545； UniProt 1–545 Author chain C； PDBConstruct 1–545； UniProt 1–545 Author chain D； PDBConstruct 1–545； UniProt 1–545 Author chain E； PDBConstruct 1–545； UniProt 1–545 Author chain F； PDBConstruct 1–545； UniProt 1–545 Author chain G； PDBConstruct 1–545； UniProt 1–545

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	1iok
Deposition date deposition_date	2001-03-16
Structure title title	CRYSTAL STRUCTURE OF CHAPERONIN-60 FROM PARACOCCUS DENITRIFICANS
Keywords keywords	chaperonin, 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.

1iok__assembly_1__model_1

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

Download this curve (.dat)

1iok__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1iok__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	56.64 Å
Rg (electron density)	55.66 Å
Total Rg	55.82 Å
Atom count	25095
Residues	3374
Excluded volume	446580 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1iok__assembly_1__model_1`	heptameric （7）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1iok__assembly_2__model_1`	tetradecameric （14）	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 (1)

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6. Fold Classification (SCOP + CATH) 42 domains

SCOP 2.08 (21 domains)

Domain ID domain_id	d1ioka1
Class class	a — All alpha proteins
Fold Fold fold	a.129 — GroEL equatorial domain-like
Superfamily Superfamily superfamily	a.129.1 — GroEL equatorial domain-like
Family Family family	a.129.1.1 — GroEL chaperone, ATPase domain

Domain ID domain_id	d1ioka2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.8 — The 'swivelling' beta/beta/alpha domain
Superfamily Superfamily superfamily	c.8.5 — GroEL apical domain-like
Family Family family	c.8.5.1 — GroEL-like chaperone, apical domain

Domain ID domain_id	d1ioka3
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.56 — GroEL-intermediate domain like
Superfamily Superfamily superfamily	d.56.1 — GroEL-intermediate domain like
Family Family family	d.56.1.1 — GroEL-like chaperone, intermediate domain

Domain ID domain_id	d1iokb1
Class class	a — All alpha proteins
Fold Fold fold	a.129 — GroEL equatorial domain-like
Superfamily Superfamily superfamily	a.129.1 — GroEL equatorial domain-like
Family Family family	a.129.1.1 — GroEL chaperone, ATPase domain

Domain ID domain_id	d1iokb2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.8 — The 'swivelling' beta/beta/alpha domain
Superfamily Superfamily superfamily	c.8.5 — GroEL apical domain-like
Family Family family	c.8.5.1 — GroEL-like chaperone, apical domain

Domain ID domain_id	d1iokb3
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.56 — GroEL-intermediate domain like
Superfamily Superfamily superfamily	d.56.1 — GroEL-intermediate domain like
Family Family family	d.56.1.1 — GroEL-like chaperone, intermediate domain

Domain ID domain_id	d1iokc1
Class class	a — All alpha proteins
Fold Fold fold	a.129 — GroEL equatorial domain-like
Superfamily Superfamily superfamily	a.129.1 — GroEL equatorial domain-like
Family Family family	a.129.1.1 — GroEL chaperone, ATPase domain

Domain ID domain_id	d1iokc2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.8 — The 'swivelling' beta/beta/alpha domain
Superfamily Superfamily superfamily	c.8.5 — GroEL apical domain-like
Family Family family	c.8.5.1 — GroEL-like chaperone, apical domain

Domain ID domain_id	d1iokc3
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.56 — GroEL-intermediate domain like
Superfamily Superfamily superfamily	d.56.1 — GroEL-intermediate domain like
Family Family family	d.56.1.1 — GroEL-like chaperone, intermediate domain

Domain ID domain_id	d1iokd1
Class class	a — All alpha proteins
Fold Fold fold	a.129 — GroEL equatorial domain-like
Superfamily Superfamily superfamily	a.129.1 — GroEL equatorial domain-like
Family Family family	a.129.1.1 — GroEL chaperone, ATPase domain

Domain ID domain_id	d1iokd2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.8 — The 'swivelling' beta/beta/alpha domain
Superfamily Superfamily superfamily	c.8.5 — GroEL apical domain-like
Family Family family	c.8.5.1 — GroEL-like chaperone, apical domain

Domain ID domain_id	d1iokd3
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.56 — GroEL-intermediate domain like
Superfamily Superfamily superfamily	d.56.1 — GroEL-intermediate domain like
Family Family family	d.56.1.1 — GroEL-like chaperone, intermediate domain

Domain ID domain_id	d1ioke1
Class class	a — All alpha proteins
Fold Fold fold	a.129 — GroEL equatorial domain-like
Superfamily Superfamily superfamily	a.129.1 — GroEL equatorial domain-like
Family Family family	a.129.1.1 — GroEL chaperone, ATPase domain

Domain ID domain_id	d1ioke2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.8 — The 'swivelling' beta/beta/alpha domain
Superfamily Superfamily superfamily	c.8.5 — GroEL apical domain-like
Family Family family	c.8.5.1 — GroEL-like chaperone, apical domain

Domain ID domain_id	d1ioke3
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.56 — GroEL-intermediate domain like
Superfamily Superfamily superfamily	d.56.1 — GroEL-intermediate domain like
Family Family family	d.56.1.1 — GroEL-like chaperone, intermediate domain

Domain ID domain_id	d1iokf1
Class class	a — All alpha proteins
Fold Fold fold	a.129 — GroEL equatorial domain-like
Superfamily Superfamily superfamily	a.129.1 — GroEL equatorial domain-like
Family Family family	a.129.1.1 — GroEL chaperone, ATPase domain

Domain ID domain_id	d1iokf2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.8 — The 'swivelling' beta/beta/alpha domain
Superfamily Superfamily superfamily	c.8.5 — GroEL apical domain-like
Family Family family	c.8.5.1 — GroEL-like chaperone, apical domain

Domain ID domain_id	d1iokf3
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.56 — GroEL-intermediate domain like
Superfamily Superfamily superfamily	d.56.1 — GroEL-intermediate domain like
Family Family family	d.56.1.1 — GroEL-like chaperone, intermediate domain

Domain ID domain_id	d1iokg1
Class class	a — All alpha proteins
Fold Fold fold	a.129 — GroEL equatorial domain-like
Superfamily Superfamily superfamily	a.129.1 — GroEL equatorial domain-like
Family Family family	a.129.1.1 — GroEL chaperone, ATPase domain

Domain ID domain_id	d1iokg2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.8 — The 'swivelling' beta/beta/alpha domain
Superfamily Superfamily superfamily	c.8.5 — GroEL apical domain-like
Family Family family	c.8.5.1 — GroEL-like chaperone, apical domain

Domain ID domain_id	d1iokg3
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.56 — GroEL-intermediate domain like
Superfamily Superfamily superfamily	d.56.1 — GroEL-intermediate domain like
Family Family family	d.56.1.1 — GroEL-like chaperone, intermediate domain

CATH v4.4 (21 domains)

Domain ID domain_id	1iokA01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	560 — GROEL; domain 1
Homologous superfamily homologous superfamily	10 — GroEL-like equatorial domain

Domain ID domain_id	1iokA02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	260 — GROEL; domain 2
Homologous superfamily homologous superfamily	10 — TCP-1-like chaperonin intermediate domain

Domain ID domain_id	1iokA03
Class class	3 — Alpha Beta
Architecture architecture	50 — 3-Layer(bba) Sandwich
Topology topology	7 — GroEL
Homologous superfamily homologous superfamily	10 — GroEL

Domain ID domain_id	1iokB01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	560 — GROEL; domain 1
Homologous superfamily homologous superfamily	10 — GroEL-like equatorial domain

Domain ID domain_id	1iokB02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	260 — GROEL; domain 2
Homologous superfamily homologous superfamily	10 — TCP-1-like chaperonin intermediate domain

Domain ID domain_id	1iokB03
Class class	3 — Alpha Beta
Architecture architecture	50 — 3-Layer(bba) Sandwich
Topology topology	7 — GroEL
Homologous superfamily homologous superfamily	10 — GroEL

Domain ID domain_id	1iokC01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	560 — GROEL; domain 1
Homologous superfamily homologous superfamily	10 — GroEL-like equatorial domain

Domain ID domain_id	1iokC02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	260 — GROEL; domain 2
Homologous superfamily homologous superfamily	10 — TCP-1-like chaperonin intermediate domain

Domain ID domain_id	1iokC03
Class class	3 — Alpha Beta
Architecture architecture	50 — 3-Layer(bba) Sandwich
Topology topology	7 — GroEL
Homologous superfamily homologous superfamily	10 — GroEL

Domain ID domain_id	1iokD01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	560 — GROEL; domain 1
Homologous superfamily homologous superfamily	10 — GroEL-like equatorial domain

Domain ID domain_id	1iokD02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	260 — GROEL; domain 2
Homologous superfamily homologous superfamily	10 — TCP-1-like chaperonin intermediate domain

Domain ID domain_id	1iokD03
Class class	3 — Alpha Beta
Architecture architecture	50 — 3-Layer(bba) Sandwich
Topology topology	7 — GroEL
Homologous superfamily homologous superfamily	10 — GroEL

Domain ID domain_id	1iokE01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	560 — GROEL; domain 1
Homologous superfamily homologous superfamily	10 — GroEL-like equatorial domain

Domain ID domain_id	1iokE02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	260 — GROEL; domain 2
Homologous superfamily homologous superfamily	10 — TCP-1-like chaperonin intermediate domain

Domain ID domain_id	1iokE03
Class class	3 — Alpha Beta
Architecture architecture	50 — 3-Layer(bba) Sandwich
Topology topology	7 — GroEL
Homologous superfamily homologous superfamily	10 — GroEL

Domain ID domain_id	1iokF01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	560 — GROEL; domain 1
Homologous superfamily homologous superfamily	10 — GroEL-like equatorial domain

Domain ID domain_id	1iokF02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	260 — GROEL; domain 2
Homologous superfamily homologous superfamily	10 — TCP-1-like chaperonin intermediate domain

Domain ID domain_id	1iokF03
Class class	3 — Alpha Beta
Architecture architecture	50 — 3-Layer(bba) Sandwich
Topology topology	7 — GroEL
Homologous superfamily homologous superfamily	10 — GroEL

Domain ID domain_id	1iokG01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	560 — GROEL; domain 1
Homologous superfamily homologous superfamily	10 — GroEL-like equatorial domain

Domain ID domain_id	1iokG02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	260 — GROEL; domain 2
Homologous superfamily homologous superfamily	10 — TCP-1-like chaperonin intermediate domain

Domain ID domain_id	1iokG03
Class class	3 — Alpha Beta
Architecture architecture	50 — 3-Layer(bba) Sandwich
Topology topology	7 — GroEL
Homologous superfamily homologous superfamily	10 — GroEL

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Unit-cell length a length_a	286.355 Å
Unit-cell length b length_b	286.355 Å
Unit-cell length c length_c	153.463 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	56

Space group space_group	P 42 21 2
Space-group number int_tables_number	94
Crystal system crystal_system	—

Resolution resolution	3.200 Å
Low-resolution limit resolution_low	6.000 Å
R factor r_factor	0.2035
R_work r_work	0.2040
R_free r_free	0.2350

Description description	CHAPERONIN 60
Molecular weight formula_weight	57788.0 kDa
Source method src_method	nat
Copy count entity_count	7

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F,G
Atom count atom_count	25095

CRYSTAL STRUCTURE OF CHAPERONIN-60 FROM PARACOCCUS DENITRIFICANS

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

CHAPERONIN 60

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

1iok__assembly_1__model_1

1iok__assembly_1__model_1 | I(q)

1iok__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

6. Fold Classification (SCOP + CATH) 42 domains

SCOP 2.08 (21 domains)

CATH v4.4 (21 domains)

7. Citations (2)

CRYSTAL STRUCTURE OF CHAPERONIN-60 FROM PARACOCCUS DENITRIFICANS

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

CHAPERONIN 60

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

1iok__assembly_1__model_1

1iok__assembly_1__model_1 | I(q)

1iok__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

6. Fold Classification (SCOP + CATH) 42 domains

SCOP 2.08 (21 domains)

CATH v4.4 (21 domains)

7. Citations (2)