SAXSdb — 1ic0

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

Nitrosocyanin

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 3	COPPER (II) ION × 3 water × 3	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 3	COPPER (II) ION × 3 water × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q820S6_NITEU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–112； UniProt 25–136 Author chain B； PDBConstruct 1–112； UniProt 25–136 Author chain C； PDBConstruct 1–112； UniProt 25–136 Author chain D； PDBConstruct 1–112； UniProt 25–136 Author chain E； PDBConstruct 1–112； UniProt 25–136 Author chain F； PDBConstruct 1–112； UniProt 25–136

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	1ic0
Deposition date deposition_date	2001-03-29
Structure title title	RED COPPER PROTEIN NITROSOCYANIN FROM NITROSOMONAS EUROPAEA
Keywords keywords	red copper, cupredoxin, beta hairpin, nitrosocyanin, Nitrosomonas europaea, Cu-MAD, METAL BINDING PROTEIN; METAL BINDING PROTEIN
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.

1ic0__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1ic0__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1ic0__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	20.24 Å
Rg (electron density)	19.16 Å
Total Rg	20.17 Å
Atom count	2555
Residues	332
Excluded volume	45949 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1ic0__assembly_1__model_1`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1ic0__assembly_2__model_1`	trimeric （3）	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)

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6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

Domain ID domain_id	d1ic0a_
Class class	b — All beta proteins
Fold Fold fold	b.6 — Cupredoxin-like
Superfamily Superfamily superfamily	b.6.1 — Cupredoxins
Family Family family	b.6.1.4 — Nitrosocyanin

Domain ID domain_id	d1ic0b_
Class class	b — All beta proteins
Fold Fold fold	b.6 — Cupredoxin-like
Superfamily Superfamily superfamily	b.6.1 — Cupredoxins
Family Family family	b.6.1.4 — Nitrosocyanin

Domain ID domain_id	d1ic0c_
Class class	b — All beta proteins
Fold Fold fold	b.6 — Cupredoxin-like
Superfamily Superfamily superfamily	b.6.1 — Cupredoxins
Family Family family	b.6.1.4 — Nitrosocyanin

Domain ID domain_id	d1ic0d_
Class class	b — All beta proteins
Fold Fold fold	b.6 — Cupredoxin-like
Superfamily Superfamily superfamily	b.6.1 — Cupredoxins
Family Family family	b.6.1.4 — Nitrosocyanin

Domain ID domain_id	d1ic0e_
Class class	b — All beta proteins
Fold Fold fold	b.6 — Cupredoxin-like
Superfamily Superfamily superfamily	b.6.1 — Cupredoxins
Family Family family	b.6.1.4 — Nitrosocyanin

Domain ID domain_id	d1ic0f_
Class class	b — All beta proteins
Fold Fold fold	b.6 — Cupredoxin-like
Superfamily Superfamily superfamily	b.6.1 — Cupredoxins
Family Family family	b.6.1.4 — Nitrosocyanin

CATH v4.4 (6 domains)

Domain ID domain_id	1ic0A00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	420 — Cupredoxins - blue copper proteins

Domain ID domain_id	1ic0B00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	420 — Cupredoxins - blue copper proteins

Domain ID domain_id	1ic0C00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	420 — Cupredoxins - blue copper proteins

Domain ID domain_id	1ic0D00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	420 — Cupredoxins - blue copper proteins

Domain ID domain_id	1ic0E00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	420 — Cupredoxins - blue copper proteins

Domain ID domain_id	1ic0F00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	420 — Cupredoxins - blue copper proteins

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Unit-cell length a length_a	90.903 Å
Unit-cell length b length_b	92.708 Å
Unit-cell length c length_c	97.201 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 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.100 Å
Low-resolution limit resolution_low	29.260 Å
R factor r_factor	0.2150
R_work r_work	0.2150
R_free r_free	0.2470

Description description	Nitrosocyanin
Molecular weight formula_weight	12231.9 kDa
Source method src_method	nat
Copy count entity_count	6

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F
Atom count atom_count	5358

RED COPPER PROTEIN NITROSOCYANIN FROM NITROSOMONAS EUROPAEA

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

Nitrosocyanin

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

1ic0__assembly_2__model_1

1ic0__assembly_2__model_1 | I(q)

1ic0__assembly_2__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

CATH v4.4 (6 domains)

7. Citations (1)

Description description	COPPER (II) ION
Molecular weight formula_weight	63.5 kDa
Source method src_method	syn
Copy count entity_count	6

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	248

RED COPPER PROTEIN NITROSOCYANIN FROM NITROSOMONAS EUROPAEA

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

Nitrosocyanin

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

1ic0__assembly_2__model_1

1ic0__assembly_2__model_1 | I(q)

1ic0__assembly_2__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

CATH v4.4 (6 domains)

7. Citations (1)