3e0o

Crystal structure of MsrB

Method: X-RAY DIFFRACTION

▼

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

Peptide methionine sulfoxide reductase msrB

Bacillus subtilis

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
2	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count
3	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count
4	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count
5	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count
6	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count
7	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	MSRB_BACSU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–144； UniProt 1–143 Author chain B； PDBConstruct 2–144； UniProt 1–143 Author chain C； PDBConstruct 2–144； UniProt 1–143 Author chain D； PDBConstruct 2–144； UniProt 1–143 Author chain E； PDBConstruct 2–144； UniProt 1–143 Author chain F； PDBConstruct 2–144； UniProt 1–143

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.

▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id	3e0o
Deposition date deposition_date	2008-07-31
Structure title title	Crystal structure of MsrB
Keywords keywords	msrB, Oxidoreductase; OXIDOREDUCTASE
Experimental Method method	X-RAY DIFFRACTION

▼

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.

3e0o__assembly_1__model_1

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

Download this curve (.dat)

3e0o__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3e0o__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	35.42 Å
Rg (electron density)	34.76 Å
Total Rg	35.30 Å
Atom count	6907
Residues	844
Excluded volume	121320 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3e0o__assembly_1__model_1`	hexameric （6）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3e0o__assembly_2__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`3e0o__assembly_3__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
4	1	`3e0o__assembly_4__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
5	1	`3e0o__assembly_5__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
6	1	`3e0o__assembly_6__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
7	1	`3e0o__assembly_7__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download

▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (2)

▼

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

Domain ID domain_id	d3e0oa_
Class class	b — All beta proteins
Fold Fold fold	b.88 — Mss4-like
Superfamily Superfamily superfamily	b.88.1 — Mss4-like
Family Family family	b.88.1.3 — SelR domain

Domain ID domain_id	d3e0ob_
Class class	b — All beta proteins
Fold Fold fold	b.88 — Mss4-like
Superfamily Superfamily superfamily	b.88.1 — Mss4-like
Family Family family	b.88.1.3 — SelR domain

Domain ID domain_id	d3e0oc_
Class class	b — All beta proteins
Fold Fold fold	b.88 — Mss4-like
Superfamily Superfamily superfamily	b.88.1 — Mss4-like
Family Family family	b.88.1.3 — SelR domain

Domain ID domain_id	d3e0od_
Class class	b — All beta proteins
Fold Fold fold	b.88 — Mss4-like
Superfamily Superfamily superfamily	b.88.1 — Mss4-like
Family Family family	b.88.1.3 — SelR domain

Domain ID domain_id	d3e0oe_
Class class	b — All beta proteins
Fold Fold fold	b.88 — Mss4-like
Superfamily Superfamily superfamily	b.88.1 — Mss4-like
Family Family family	b.88.1.3 — SelR domain

Domain ID domain_id	d3e0of_
Class class	b — All beta proteins
Fold Fold fold	b.88 — Mss4-like
Superfamily Superfamily superfamily	b.88.1 — Mss4-like
Family Family family	b.88.1.3 — SelR domain

CATH v4.4 (6 domains)

Domain ID domain_id	3e0oA00
Class class	2 — Mainly Beta
Architecture architecture	170 — Beta Complex
Topology topology	150 — Metal Binding Protein, Guanine Nucleotide Exchange Factor; Chain A
Homologous superfamily homologous superfamily	20 — Peptide methionine sulfoxide reductase.

Domain ID domain_id	3e0oB00
Class class	2 — Mainly Beta
Architecture architecture	170 — Beta Complex
Topology topology	150 — Metal Binding Protein, Guanine Nucleotide Exchange Factor; Chain A
Homologous superfamily homologous superfamily	20 — Peptide methionine sulfoxide reductase.

Domain ID domain_id	3e0oC00
Class class	2 — Mainly Beta
Architecture architecture	170 — Beta Complex
Topology topology	150 — Metal Binding Protein, Guanine Nucleotide Exchange Factor; Chain A
Homologous superfamily homologous superfamily	20 — Peptide methionine sulfoxide reductase.

Domain ID domain_id	3e0oD00
Class class	2 — Mainly Beta
Architecture architecture	170 — Beta Complex
Topology topology	150 — Metal Binding Protein, Guanine Nucleotide Exchange Factor; Chain A
Homologous superfamily homologous superfamily	20 — Peptide methionine sulfoxide reductase.

Domain ID domain_id	3e0oE00
Class class	2 — Mainly Beta
Architecture architecture	170 — Beta Complex
Topology topology	150 — Metal Binding Protein, Guanine Nucleotide Exchange Factor; Chain A
Homologous superfamily homologous superfamily	20 — Peptide methionine sulfoxide reductase.

Domain ID domain_id	3e0oF00
Class class	2 — Mainly Beta
Architecture architecture	170 — Beta Complex
Topology topology	150 — Metal Binding Protein, Guanine Nucleotide Exchange Factor; Chain A
Homologous superfamily homologous superfamily	20 — Peptide methionine sulfoxide reductase.

▶

Unit-cell length a length_a	136.114 Å
Unit-cell length b length_b	136.114 Å
Unit-cell length c length_c	61.925 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	18

Space group space_group	P 3
Space-group number int_tables_number	143
Crystal system crystal_system	—

Resolution resolution	2.600 Å
Low-resolution limit resolution_low	19.790 Å
R factor r_factor	0.2350
R_work r_work	0.2350
R_free r_free	0.2940

Description description	Peptide methionine sulfoxide reductase msrB
Molecular weight formula_weight	16757.7 kDa
EC 编号 ec_number	1.8.4.12
Source method src_method	man
Copy count entity_count	6

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F
Atom count atom_count	7294

Crystal structure of MsrB

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

Peptide methionine sulfoxide reductase msrB

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

3e0o__assembly_1__model_1

3e0o__assembly_1__model_1 | I(q)

3e0o__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

CATH v4.4 (6 domains)

7. Citations (1)

Source organism organism	Bacillus subtilis
NCBI taxonomy ID ncbi_taxonomy_id	1423
Host organism host_organism	Escherichia coli

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	387

Crystal structure of MsrB

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

Peptide methionine sulfoxide reductase msrB

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

3e0o__assembly_1__model_1

3e0o__assembly_1__model_1 | I(q)

3e0o__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

CATH v4.4 (6 domains)

7. Citations (1)