SAXSdb — 1naq

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

Periplasmic divalent cation tolerance protein cutA

Escherichia coli

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 3	MERCURY (II) ION × 4 MERCURIBENZOIC ACID × 5 water × 3	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 3	MERCURY (II) ION × 4 MERCURIBENZOIC ACID × 5 water × 3	Consistent with protein count
3	Protein homooligomer	Homooligomer	Protein 6	MERCURY (II) ION × 8 MERCURIBENZOIC ACID × 10 water × 6	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

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

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	1naq
Deposition date deposition_date	2002-11-28
Structure title title	Crystal structure of CUTA1 from E.coli at 1.7 A resolution
Keywords keywords	CUTA, copper resistance, Structural Proteomics in Europe, SPINE, Structural Genomics, ELECTRON TRANSPORT; ELECTRON TRANSPORT
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.

1naq__assembly_1__model_1

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

Download this curve (.dat)

1naq__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1naq__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	20.17 Å
Rg (electron density)	18.93 Å
Total Rg	19.64 Å
Atom count	2471
Residues	314
Excluded volume	44615 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1naq__assembly_1__model_1`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1naq__assembly_2__model_1`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`1naq__assembly_3__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 (4)

Entity 1 Entity 1 polymer

Description description	Periplasmic divalent cation tolerance protein cutA
Molecular weight formula_weight	12342.0 kDa
Source method src_method	man
Copy count entity_count	6

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F
Atom count atom_count	5287

MLDEKSSNTASVVVLCTAPDEATAQDLAAKVLAEKLAACATLIPGATSLYYWEGKLEQEYEVQMILKTTVSHQQALLECLKSHHPYQTPELLVLPVTHGDTDYLSWLNASLR

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	MERCURY (II) ION
Molecular weight formula_weight	200.6 kDa
Source method src_method	syn
Copy count entity_count	8

Entity 3 Entity 3 non-polymer

Description description	MERCURIBENZOIC ACID
Molecular weight formula_weight	321.7 kDa
Source method src_method	syn
Copy count entity_count	10

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	343

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6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

Domain ID domain_id	d1naqa_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.58 — Ferredoxin-like
Superfamily Superfamily superfamily	d.58.5 — GlnB-like
Family Family family	d.58.5.2 — Divalent ion tolerance proteins CutA (CutA1)

Domain ID domain_id	d1naqb_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.58 — Ferredoxin-like
Superfamily Superfamily superfamily	d.58.5 — GlnB-like
Family Family family	d.58.5.2 — Divalent ion tolerance proteins CutA (CutA1)

Domain ID domain_id	d1naqc_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.58 — Ferredoxin-like
Superfamily Superfamily superfamily	d.58.5 — GlnB-like
Family Family family	d.58.5.2 — Divalent ion tolerance proteins CutA (CutA1)

Domain ID domain_id	d1naqd_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.58 — Ferredoxin-like
Superfamily Superfamily superfamily	d.58.5 — GlnB-like
Family Family family	d.58.5.2 — Divalent ion tolerance proteins CutA (CutA1)

Domain ID domain_id	d1naqe_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.58 — Ferredoxin-like
Superfamily Superfamily superfamily	d.58.5 — GlnB-like
Family Family family	d.58.5.2 — Divalent ion tolerance proteins CutA (CutA1)

Domain ID domain_id	d1naqf_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.58 — Ferredoxin-like
Superfamily Superfamily superfamily	d.58.5 — GlnB-like
Family Family family	d.58.5.2 — Divalent ion tolerance proteins CutA (CutA1)

CATH v4.4 (6 domains)

Domain ID domain_id	1naqA00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	120 —

Domain ID domain_id	1naqB00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	120 —

Domain ID domain_id	1naqC00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	120 —

Domain ID domain_id	1naqD00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	120 —

Domain ID domain_id	1naqE00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	120 —

Domain ID domain_id	1naqF00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	120 —

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Unit-cell length a length_a	55.989 Å
Unit-cell length b length_b	89.563 Å
Unit-cell length c length_c	122.294 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	1.700 Å
Low-resolution limit resolution_low	19.960 Å
R factor r_factor	0.2070
R_work r_work	0.2025
R_free r_free	0.2554

Crystal structure of CUTA1 from E.coli at 1.7 A resolution

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

Periplasmic divalent cation tolerance protein cutA

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

1naq__assembly_1__model_1

1naq__assembly_1__model_1 | I(q)

1naq__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

CATH v4.4 (6 domains)

7. Citations (2)

Crystal structure of CUTA1 from E.coli at 1.7 A resolution

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

Periplasmic divalent cation tolerance protein cutA

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

1naq__assembly_1__model_1

1naq__assembly_1__model_1 | I(q)

1naq__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

CATH v4.4 (6 domains)

7. Citations (2)