SAXSdb — 3zx6

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

HAMP, METHYL-ACCEPTING CHEMOTAXIS PROTEIN I

ESCHERICHIA COLI K-12

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Homooligomer	Protein 2	CHLORIDE ION × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	O28769_ARCFU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–50； UniProt 278–326 Author chain B； PDBConstruct 2–50； UniProt 278–326

HAMP, METHYL-ACCEPTING CHEMOTAXIS PROTEIN I

ESCHERICHIA COLI K-12

UniProt P02942

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Homooligomer	Protein 2	CHLORIDE ION × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	MCP1_ECOLI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 51–305； UniProt 264–520 Author chain A； PDBConstruct 309–339； UniProt 521–551 Author chain B； PDBConstruct 51–305； UniProt 264–520 Author chain B； PDBConstruct 309–339； UniProt 521–551

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	3zx6
Deposition date deposition_date	2011-08-08
Structure title title	Structure of Hamp(AF1503)-Tsr fusion - Hamp (A291V) mutant
Keywords keywords	SIGNALING, HAMP DOMAIN, TSR RECEPTOR, FUSION; SIGNALING
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.

3zx6__assembly_1__model_1

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

Download this curve (.dat)

3zx6__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3zx6__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	59.63 Å
Rg (electron density)	63.66 Å
Total Rg	62.40 Å
Atom count	4438
Residues	606
Excluded volume	77740 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3zx6__assembly_1__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	HAMP, METHYL-ACCEPTING CHEMOTAXIS PROTEIN I
Molecular weight formula_weight	36136.1 kDa
Mutation mutation	YES
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	4514

MSTITRPIIELSNTVDKIAEGNLEAEVPHQNRADEIGILAKSIERLRRSLMRTVGDVRNGANAIYSGASEIATGNNDLSSRTEQQAASLEETAASMEQLTATVKQNAENARQASHLALSASETAQRGGKVVDNVVQTMRDISTSSQKIADIISVIDGIAFQTNILALNAAVEAARAGEQGRGFAVVAGEVRNLAQRSAQAAREIKSLIEDSVGKVDVGSTLVESAGETMAEIVSAVTRVTDIMGEIASASDEQSRGIDQVGLAVAEMDRVTQQNAALVEESAAAAAALEEQASRLTEAVAVFRIQQQQQQQRETSAVVKTVTPATPRKMAVADSGENWETF

Source Source

Source organism organism	ESCHERICHIA COLI K-12
NCBI taxonomy ID ncbi_taxonomy_id	83333
Host organism host_organism	ESCHERICHIA COLI

Entity 2 Entity 2 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 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	76

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6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	3zx6A00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	287 — Helix Hairpins
Homologous superfamily homologous superfamily	950 — Methyl-accepting chemotaxis protein

Domain ID domain_id	3zx6B00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	287 — Helix Hairpins
Homologous superfamily homologous superfamily	950 — Methyl-accepting chemotaxis protein

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Unit-cell length a length_a	112.220 Å
Unit-cell length b length_b	80.020 Å
Unit-cell length c length_c	139.170 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	110.78 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	8

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	2.650 Å
Low-resolution limit resolution_low	29.480 Å
R factor r_factor	0.2314
R_work r_work	0.2287
R_free r_free	0.2826

Structure of Hamp(AF1503)-Tsr fusion - Hamp (A291V) mutant

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

HAMP, METHYL-ACCEPTING CHEMOTAXIS PROTEIN I

State in the Current Structure

Other States of the Same Protein in the Database

HAMP, METHYL-ACCEPTING CHEMOTAXIS PROTEIN I

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

3zx6__assembly_1__model_1

3zx6__assembly_1__model_1 | I(q)

3zx6__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 (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) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)

Structure of Hamp(AF1503)-Tsr fusion - Hamp (A291V) mutant

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

HAMP, METHYL-ACCEPTING CHEMOTAXIS PROTEIN I

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

HAMP, METHYL-ACCEPTING CHEMOTAXIS PROTEIN I

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

3zx6__assembly_1__model_1

3zx6__assembly_1__model_1 | I(q)

3zx6__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 (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) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)