SAXSdb — 3qec

▼

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

Putative carbohydrate binding protein

Pseudomonas aeruginosa

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	SULFATE ION × 1 GLYCEROL × 2 DI(HYDROXYETHYL)ETHER × 2 TRIETHYLENE GLYCOL × 1 water × 1	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 3	SULFATE ION × 3 GLYCEROL × 6 DI(HYDROXYETHYL)ETHER × 6 TRIETHYLENE GLYCOL × 3 water × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q9I420_PSEAE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–150； UniProt 22–170

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	3qec
Deposition date deposition_date	2011-01-20
Structure title title	Crystal structure of a putative carbohydrate binding protein (PA1324) from Pseudomonas aeruginosa at 2.61 A resolution
Keywords keywords	;SURAMIN BINDING, HEPARIN BINDING, POSSIBLE CARBOHYDRATE TRANSPORTER, BIOFILM FORMATION, STRUCTURAL GENOMICS, JOINT CENTER FOR STRUCTURAL GENOMICS, JCSG, PROTEIN STRUCTURE INITIATIVE, PSI-BIOLOGY, CARBOHYDRATE- BINDING PROTEIN, CARBOHYDRATE-BINDING PROTEIN ;; CARBOHYDRATE-BINDING PROTEIN
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.

3qec__assembly_2__model_1

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

Download this curve (.dat)

3qec__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3qec__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	25.22 Å
Rg (electron density)	24.03 Å
Total Rg	24.78 Å
Atom count	3434
Residues	432
Excluded volume	60535 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3qec__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3qec__assembly_2__model_1`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download

▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (6)

Entity 1 Entity 1 polymer

Description description	Putative carbohydrate binding protein
Molecular weight formula_weight	16336.8 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	1203

GSNPNDLPDFPEHEYAATQQVGEGVINGDLYLTSASGAIQKGTNTKVALEPATSYMKAYYAKFGNLDAAKRDPDVQPPVLDPRRATYVREATTDQNGRFDFDHIPNGTYYISSELTWSAQSDGKTITEGGTVTKLVTVSGSQPQKVLLTR

Source Source

Source organism organism	Pseudomonas aeruginosa
NCBI taxonomy ID ncbi_taxonomy_id	287
Host organism host_organism	Escherichia Coli

Entity 2 Entity 2 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	GLYCEROL
Molecular weight formula_weight	92.1 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 non-polymer

Description description	DI(HYDROXYETHYL)ETHER
Molecular weight formula_weight	106.1 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 5 Entity 5 non-polymer

Description description	TRIETHYLENE GLYCOL
Molecular weight formula_weight	150.2 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 6 Entity 6 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	39

▶

Unit-cell length a length_a	132.787 Å
Unit-cell length b length_b	132.787 Å
Unit-cell length c length_c	132.787 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 43 3 2
Space-group number int_tables_number	212
Crystal system crystal_system	—

Resolution resolution	2.610 Å
Low-resolution limit resolution_low	29.692 Å
R factor r_factor	0.2106
R_work r_work	0.2099
R_free r_free	0.2256

Crystal structure of a putative carbohydrate binding protein (PA1324) from Pseudomonas aeruginosa at 2.61 A resolution

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

Putative carbohydrate binding 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

3qec__assembly_2__model_1

3qec__assembly_2__model_1 | I(q)

3qec__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 (6)

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 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 water

7. Citations (1)

Crystal structure of a putative carbohydrate binding protein (PA1324) from Pseudomonas aeruginosa at 2.61 A resolution

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

Putative carbohydrate binding 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

3qec__assembly_2__model_1

3qec__assembly_2__model_1 | I(q)

3qec__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 (6)

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 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 water

7. Citations (1)