SAXSdb — 3cwq

▼

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

ParA family chromosome partitioning protein

Synechocystis sp.

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	ADENOSINE-5'-DIPHOSPHATE × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q6YRW8_SYNY3
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–201； UniProt 1–201 Author chain B； PDBConstruct 1–201； UniProt 1–201

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.

▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id	3cwq
Deposition date deposition_date	2008-04-22
Structure title title	Crystal structure of chromosome partitioning protein (ParA) in complex with ADP from Synechocystis sp. Northeast Structural Genomics Consortium Target SgR89
Keywords keywords	;alpha-beta protein, Structural Genomics, PSI-2, Protein Structure Initiative, Northeast Structural Genomics Consortium, NESG, UNKNOWN FUNCTION ;; STRUCTURAL GENOMICS, UNKNOWN FUNCTION
Experimental Method method	X-RAY DIFFRACTION

▼

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.

3cwq__assembly_1__model_1

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

Download this curve (.dat)

3cwq__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3cwq__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	24.27 Å
Rg (electron density)	23.74 Å
Total Rg	24.51 Å
Atom count	3128
Residues	399
Excluded volume	56018 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3cwq__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download

▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Description description	ParA family chromosome partitioning protein
Molecular weight formula_weight	22923.8 kDa
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	3167

MIITVASFKGGVGKTTTAVHLSAYLALQGETLLIDGDPNRSATGWGKRGSLPFKVVDERQAAKYAPKYQNIVIDTQARPEDEDLEALADGCDLLVIPSTPDALALDALMLTIETLQKLGNNRFRILLTIIPPYPSKDGDEARQLLTTAGLPLFKRGIKRYSAFQKASLNGVVVSEVSDSKAGIAWSDYKATGKEIVEEILTLEHHHHHH

Source Source

Source organism organism	Synechocystis sp.
NCBI taxonomy ID ncbi_taxonomy_id	1148
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	ADENOSINE-5'-DIPHOSPHATE
Molecular weight formula_weight	427.2 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	39

▼

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	3cwqA00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	3cwqB00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

▶

Unit-cell length a length_a	63.609 Å
Unit-cell length b length_b	70.142 Å
Unit-cell length c length_c	112.209 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 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.470 Å
Low-resolution limit resolution_low	29.620 Å
R factor r_factor	0.2237
R_work r_work	0.2207
R_free r_free	0.2817

Crystal structure of chromosome partitioning protein (ParA) in complex with ADP from Synechocystis sp. Northeast Structural Genomics Consortium Target SgR89

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

ParA family chromosome partitioning protein

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

3cwq__assembly_1__model_1

3cwq__assembly_1__model_1 | I(q)

3cwq__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)

Crystal structure of chromosome partitioning protein (ParA) in complex with ADP from Synechocystis sp. Northeast Structural Genomics Consortium Target SgR89

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

ParA family chromosome partitioning protein

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

3cwq__assembly_1__model_1

3cwq__assembly_1__model_1 | I(q)

3cwq__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)