SAXSdb — 1w2e

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

ZAPA

PSEUDOMONAS AERUGINOSA

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	Q9HTW3
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–104； UniProt 1–104 Author chain B； PDBConstruct 1–104； UniProt 1–104

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	1w2e
Deposition date deposition_date	2004-07-01
Structure title title	The Crystal Structure of the Bacterial Cell Division Protein ZapA
Keywords keywords	BACTERIAL CELL DIVISION, FTSZ MODULATOR; BACTERIAL CELL DIVISION
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.

1w2e__assembly_1__model_1

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

Download this curve (.dat)

1w2e__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1w2e__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	36.67 Å
Rg (electron density)	37.88 Å
Total Rg	38.08 Å
Atom count	2906
Residues	360
Excluded volume	51100 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1w2e__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) 6 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1w2ea_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.244 — Cell division protein ZapA-like
Superfamily Superfamily superfamily	d.244.1 — Cell division protein ZapA-like
Family Family family	d.244.1.1 — Cell division protein ZapA-like

Domain ID domain_id	d1w2eb_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.244 — Cell division protein ZapA-like
Superfamily Superfamily superfamily	d.244.1 — Cell division protein ZapA-like
Family Family family	d.244.1.1 — Cell division protein ZapA-like

CATH v4.4 (4 domains)

Domain ID domain_id	1w2eA01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	160 — Double Stranded RNA Binding Domain
Homologous superfamily homologous superfamily	880 — Cell division protein ZapA protomer, N-terminal domain

Domain ID domain_id	1w2eA02
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	50 —

Domain ID domain_id	1w2eB01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	160 — Double Stranded RNA Binding Domain
Homologous superfamily homologous superfamily	880 — Cell division protein ZapA protomer, N-terminal domain

Domain ID domain_id	1w2eB02
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	50 —

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Unit-cell length a length_a	105.960 Å
Unit-cell length b length_b	105.960 Å
Unit-cell length c length_c	36.260 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	P 41 21 2
Space-group number int_tables_number	92
Crystal system crystal_system	—

Resolution resolution	2.800 Å
Low-resolution limit resolution_low	74.330 Å
R factor r_factor	0.2400
R_work r_work	0.2400
R_free r_free	0.2888

Description description	ZAPA
Molecular weight formula_weight	11813.8 kDa
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	1465

The Crystal Structure of the Bacterial Cell Division Protein ZapA

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

ZAPA

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

1w2e__assembly_1__model_1

1w2e__assembly_1__model_1 | I(q)

1w2e__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Source organism organism	PSEUDOMONAS AERUGINOSA
NCBI taxonomy ID ncbi_taxonomy_id	287
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	12

The Crystal Structure of the Bacterial Cell Division Protein ZapA

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

ZAPA

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

1w2e__assembly_1__model_1

1w2e__assembly_1__model_1 | I(q)

1w2e__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

CATH v4.4 (4 domains)

7. Citations (1)