SAXSdb — 2cwl

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

manganese-free pseudocatalase

Thermus thermophilus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 6	water × 6	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q5SM21_THET8
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–302； UniProt 1–302 Author chain B； PDBConstruct 1–302； UniProt 1–302

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	2cwl
Deposition date deposition_date	2005-06-21
Structure title title	Crystal structure of manganese-free form of pseudocatalase from Thermus thermophilus HB8
Keywords keywords	;oxidoreductase, Structural Genomics, NPPSFA, National Project on Protein Structural and Functional Analyses, RIKEN Structural Genomics/Proteomics Initiative, RSGI ;; OXIDOREDUCTASE
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.

2cwl__assembly_1__model_1

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

Download this curve (.dat)

2cwl__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2cwl__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	33.19 Å
Rg (electron density)	32.21 Å
Total Rg	32.95 Å
Atom count	13923
Residues	1791
Excluded volume	248550 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2cwl__assembly_1__model_1`	hexameric （6）	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 (2)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d2cwla1
Class class	a — All alpha proteins
Fold Fold fold	a.25 — Ferritin-like
Superfamily Superfamily superfamily	a.25.1 — Ferritin-like
Family Family family	a.25.1.3 — Manganese catalase (T-catalase)

Domain ID domain_id	d2cwlb_
Class class	a — All alpha proteins
Fold Fold fold	a.25 — Ferritin-like
Superfamily Superfamily superfamily	a.25.1 — Ferritin-like
Family Family family	a.25.1.3 — Manganese catalase (T-catalase)

CATH v4.4 (2 domains)

Domain ID domain_id	2cwlA01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1260 — Ferritin
Homologous superfamily homologous superfamily	10 — Ferritin, core subunit, four-helix bundle

Domain ID domain_id	2cwlB01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1260 — Ferritin
Homologous superfamily homologous superfamily	10 — Ferritin, core subunit, four-helix bundle

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Unit-cell length a length_a	131.360 Å
Unit-cell length b length_b	131.360 Å
Unit-cell length c length_c	131.360 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	24

Space group space_group	P 21 3
Space-group number int_tables_number	198
Crystal system crystal_system	—

Resolution resolution	1.650 Å
Low-resolution limit resolution_low	43.790 Å
R factor r_factor	0.1660
R_work r_work	0.1660
R_free r_free	0.1810

Description description	manganese-free pseudocatalase
Molecular weight formula_weight	33373.1 kDa
EC 编号 ec_number	1.11.1.6
Source method src_method	man
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	5083

Crystal structure of manganese-free form of pseudocatalase from Thermus thermophilus HB8

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

manganese-free pseudocatalase

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

2cwl__assembly_1__model_1

2cwl__assembly_1__model_1 | I(q)

2cwl__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Source organism organism	Thermus thermophilus
NCBI taxonomy ID ncbi_taxonomy_id	300852
Host organism host_organism	Escherichia coli BL21(DE3)

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	442

Crystal structure of manganese-free form of pseudocatalase from Thermus thermophilus HB8

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

manganese-free pseudocatalase

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

2cwl__assembly_1__model_1

2cwl__assembly_1__model_1 | I(q)

2cwl__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)