SAXSdb — 2amo

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

Nitric oxide synthase oxygenase

Bacillus subtilis

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	PROTOPORPHYRIN IX CONTAINING FE × 2 water × 2	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	PROTOPORPHYRIN IX CONTAINING FE × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	NOSO_BACSU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 29–362； UniProt 1–336 Author chain B； PDBConstruct 29–362； UniProt 1–336

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	2amo
Deposition date deposition_date	2005-08-09
Structure title title	Loose Dimer of a Bacillus subtilis Nitric Oxide Synthase
Keywords keywords	Loose Dimer, Nitric Oxide Synthase, Non-native structure, Molten Globule, 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.

2amo__assembly_1__model_1

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

Download this curve (.dat)

2amo__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2amo__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	31.00 Å
Rg (electron density)	30.17 Å
Total Rg	30.89 Å
Atom count	5936
Residues	724
Excluded volume	105000 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2amo__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2amo__assembly_2__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)

Entity 1 Entity 1 polymer

Description description	Nitric oxide synthase oxygenase
Molecular weight formula_weight	41476.6 kDa
EC 编号 ec_number	1.14.13.39
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	6103

SHAAILWNEAKAFIAECYAELGKAEEVADRLDSIKSEIDLTGSYVHTKEELEHGAKMAWRNSNRCIGRLFWNSLNVIDRRDVRTKEDVRDALFHHIETATNNGKIRPSITIFPPEEKGEKQVEIWNHQLIRYAGYEAAGEAIGDPASCSLTAACEQLGWRGERTDFDLLPLIFRMKGDEQPVWYELPRSLVIEVPITHPDIEAFSDLELKWYGVPIISDMKLEVGGIHYNAAPFNGWYMGTEIGARNLADEKRYDKLKKVASVIGISTNYNTDLWKDQALVELNKAVLYSYKKQGVSIVDHHTAASQFKRFEEQEEEAGRKLTGDWTWLIPPISPAATHIFHRSYDNSIVKPNYFYQDKPYE

Source Source

Source organism organism	Bacillus subtilis
NCBI taxonomy ID ncbi_taxonomy_id	1423
Host organism host_organism	Escherichia coli BL21

Entity 2 Entity 2 non-polymer

Description description	PROTOPORPHYRIN IX CONTAINING FE
Molecular weight formula_weight	616.5 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	280

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d2amoa_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.174 — Nitric oxide (NO) synthase oxygenase domain
Superfamily Superfamily superfamily	d.174.1 — Nitric oxide (NO) synthase oxygenase domain
Family Family family	d.174.1.1 — Nitric oxide (NO) synthase oxygenase domain

Domain ID domain_id	d2amob_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.174 — Nitric oxide (NO) synthase oxygenase domain
Superfamily Superfamily superfamily	d.174.1 — Nitric oxide (NO) synthase oxygenase domain
Family Family family	d.174.1.1 — Nitric oxide (NO) synthase oxygenase domain

CATH v4.4 (6 domains)

Domain ID domain_id	2amoA01
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	340 — Nitric Oxide Synthase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — Nitric Oxide Synthase; Chain A, domain 1

Domain ID domain_id	2amoA02
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	440 — Nitric Oxide Synthase;Heme Domain; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Nitric Oxide Synthase;Heme Domain;Chain A domain 2

Domain ID domain_id	2amoA03
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	1230 — Bovine Endothelial Nitric Oxide Synthase Heme Domain; Chain: A,domain 3
Homologous superfamily homologous superfamily	10 — Nitric Oxide Synthase; Chain A, domain 3

Domain ID domain_id	2amoB01
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	340 — Nitric Oxide Synthase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — Nitric Oxide Synthase; Chain A, domain 1

Domain ID domain_id	2amoB02
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	440 — Nitric Oxide Synthase;Heme Domain; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Nitric Oxide Synthase;Heme Domain;Chain A domain 2

Domain ID domain_id	2amoB03
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	1230 — Bovine Endothelial Nitric Oxide Synthase Heme Domain; Chain: A,domain 3
Homologous superfamily homologous superfamily	10 — Nitric Oxide Synthase; Chain A, domain 3

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Unit-cell length a length_a	81.314 Å
Unit-cell length b length_b	93.211 Å
Unit-cell length c length_c	118.546 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 2
Space-group number int_tables_number	18
Crystal system crystal_system	—

Resolution resolution	2.600 Å
Low-resolution limit resolution_low	29.620 Å
R factor r_factor	0.2756
R_work r_work	0.2741
R_free r_free	0.2897

Loose Dimer of a Bacillus subtilis Nitric Oxide Synthase

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

Nitric oxide synthase oxygenase

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

2amo__assembly_1__model_1

2amo__assembly_1__model_1 | I(q)

2amo__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (2 domains)

CATH v4.4 (6 domains)

7. Citations (1)

Loose Dimer of a Bacillus subtilis Nitric Oxide Synthase

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

Nitric oxide synthase oxygenase

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

2amo__assembly_1__model_1

2amo__assembly_1__model_1 | I(q)

2amo__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (2 domains)

CATH v4.4 (6 domains)

7. Citations (1)