SAXSdb — 1m41

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

FMNH2-dependent alkanesulfonate monooxygenase

Escherichia coli

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SSUD_ECOLI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–380； UniProt 1–380 Author chain B； PDBConstruct 1–380； UniProt 1–380

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	1m41
Deposition date deposition_date	2002-07-02
Structure title title	Crystal structure of Escherichia coli alkanesulfonate monooxygenase SsuD at 2.3 A resolution
Keywords keywords	;FMNH2-dependent monooxygenase, SsuD, TIM-barrel, sulfate starvation, sulfur assimilation, desulfonation, alkanesulfonate, oxygenase, monooxygenase, Oxidoreductase ;; 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.

1m41__assembly_1__model_1

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

Download this curve (.dat)

1m41__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1m41__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	33.47 Å
Rg (electron density)	32.39 Å
Total Rg	33.05 Å
Atom count	10196
Residues	1312
Excluded volume	181080 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1m41__assembly_1__model_1`	tetrameric （4）	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	d1m41a_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.1 — TIM beta/alpha-barrel
Superfamily Superfamily superfamily	c.1.16 — Bacterial luciferase-like
Family Family family	c.1.16.4 — Ssud-like monoxygenases

Domain ID domain_id	d1m41b_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.1 — TIM beta/alpha-barrel
Superfamily Superfamily superfamily	c.1.16 — Bacterial luciferase-like
Family Family family	c.1.16.4 — Ssud-like monoxygenases

CATH v4.4 (2 domains)

Domain ID domain_id	1m41A00
Class class	3 — Alpha Beta
Architecture architecture	20 — Alpha-Beta Barrel
Topology topology	20 — TIM Barrel
Homologous superfamily homologous superfamily	30 — Luciferase-like domain

Domain ID domain_id	1m41B00
Class class	3 — Alpha Beta
Architecture architecture	20 — Alpha-Beta Barrel
Topology topology	20 — TIM Barrel
Homologous superfamily homologous superfamily	30 — Luciferase-like domain

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Unit-cell length a length_a	116.350 Å
Unit-cell length b length_b	140.760 Å
Unit-cell length c length_c	125.210 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	16

Space group space_group	C 2 2 21
Space-group number int_tables_number	20
Crystal system crystal_system	—

Resolution resolution	2.300 Å
Low-resolution limit resolution_low	25.000 Å
R factor r_factor	0.2360
R_work r_work	0.2350
R_free r_free	0.2750

Description description	FMNH2-dependent alkanesulfonate monooxygenase
Molecular weight formula_weight	41651.9 kDa
EC 编号 ec_number	1.1.-.-
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	5408

Crystal structure of Escherichia coli alkanesulfonate monooxygenase SsuD at 2.3 A resolution

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

FMNH2-dependent alkanesulfonate monooxygenase

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

1m41__assembly_1__model_1

1m41__assembly_1__model_1 | I(q)

1m41__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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
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	310

Crystal structure of Escherichia coli alkanesulfonate monooxygenase SsuD at 2.3 A resolution

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

FMNH2-dependent alkanesulfonate monooxygenase

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

1m41__assembly_1__model_1

1m41__assembly_1__model_1 | I(q)

1m41__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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)