SAXSdb — 2q8m

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

Fructose-bisphosphatase

Shigella boydii

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 4	6-O-phosphono-beta-D-glucopyranose × 2 1,6-di-O-phosphono-beta-D-fructofuranose × 4 MAGNESIUM ION × 8 CHLORIDE ION × 6 ADENOSINE MONOPHOSPHATE × 4 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q31TG8_SHIBS
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–332； UniProt 1–332 Author chain B； PDBConstruct 1–332； UniProt 1–332

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	2q8m
Deposition date deposition_date	2007-06-11
Structure title title	T-like Fructose-1,6-bisphosphatase from Escherichia coli with AMP, Glucose 6-phosphate, and Fructose 1,6-bisphosphate bound
Keywords keywords	;GLYCOLYSIS, GLUCONEOGENESIS, BACTERIA, CARBOHYDRATE METABOLISM, DIABETES, PROTEIN-PROTEIN INTERACTIONS, PROTEOBACTERIA, GRAM-NEGATIVE, PROTEIN CRYSTALLOGRAPHY, HETEROTROPHIC, ALLOSTERIC REGULATION, Hydrolase ;; HYDROLASE
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.

2q8m__assembly_1__model_1

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

Download this curve (.dat)

2q8m__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2q8m__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	35.25 Å
Rg (electron density)	34.62 Å
Total Rg	34.82 Å
Atom count	9954
Residues	1216
Excluded volume	177070 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2q8m__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 (7)

Entity 1 Entity 1 polymer

Description description	Fructose-bisphosphatase
Molecular weight formula_weight	37161.2 kDa
EC 编号 ec_number	3.1.3.11
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	5305

MKTLGEFIVEKQHEFSHATGELTALLSAIKLGAKIIHRDINKAGLVDILGASGAENVQGEVQQKLDLFANEKLKAALKARDIVAGIASEEEDEIVVFEGCEHAKYVVLMDPLDGSSNIDVNVSVGTIFSIYRRVTPVGTPVTEEDFLQPGNKQVAAGYVVYGSSTMLVYTTGCGVHAFTYDPSLGVFCLCQERMRFPEKGKTYSINEGNYIKFPNGVKKYIKFCQEEDKSTNRPYTSRYIGSLVADFHRNLLKGGIYLYPSTASHPDGKLRLLYECNPMAFLAEQAGGKASDGKERILDIIPETLHQRRSFFVGNDHMVEDVERFIREFPDA

Source Source

Source organism organism	Shigella boydii
NCBI taxonomy ID ncbi_taxonomy_id	621
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	6-O-phosphono-beta-D-glucopyranose
Molecular weight formula_weight	260.1 kDa
Source method src_method	man
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	1,6-di-O-phosphono-beta-D-fructofuranose
Molecular weight formula_weight	340.1 kDa
Source method src_method	man
Copy count entity_count	2

Entity 4 Entity 4 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 5 Entity 5 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 6 Entity 6 non-polymer

Description description	ADENOSINE MONOPHOSPHATE
Molecular weight formula_weight	347.2 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 7 Entity 7 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	312

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d2q8ma_
Class class	e — Multi-domain proteins (alpha and beta)
Fold Fold fold	e.7 — Carbohydrate phosphatase
Superfamily Superfamily superfamily	e.7.1 — Carbohydrate phosphatase
Family Family family	e.7.1.1 — Inositol monophosphatase/fructose-1,6-bisphosphatase-like

Domain ID domain_id	d2q8mb_
Class class	e — Multi-domain proteins (alpha and beta)
Fold Fold fold	e.7 — Carbohydrate phosphatase
Superfamily Superfamily superfamily	e.7.1 — Carbohydrate phosphatase
Family Family family	e.7.1.1 — Inositol monophosphatase/fructose-1,6-bisphosphatase-like

CATH v4.4 (4 domains)

Domain ID domain_id	2q8mA01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	540 — Fructose-1,6-Bisphosphatase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — Fructose-1,6-Bisphosphatase, subunit A, domain 1

Domain ID domain_id	2q8mA02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	190 — D-Maltodextrin-Binding Protein; domain 2
Homologous superfamily homologous superfamily	80 —

Domain ID domain_id	2q8mB01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	540 — Fructose-1,6-Bisphosphatase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — Fructose-1,6-Bisphosphatase, subunit A, domain 1

Domain ID domain_id	2q8mB02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	190 — D-Maltodextrin-Binding Protein; domain 2
Homologous superfamily homologous superfamily	80 —

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Unit-cell length a length_a	124.640 Å
Unit-cell length b length_b	124.640 Å
Unit-cell length c length_c	132.280 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 2 2
Space-group number int_tables_number	91
Crystal system crystal_system	—

Resolution resolution	2.050 Å
Low-resolution limit resolution_low	37.770 Å
R factor r_factor	0.2120
R_work r_work	0.2090
R_free r_free	0.2350

T-like Fructose-1,6-bisphosphatase from Escherichia coli with AMP, Glucose 6-phosphate, and Fructose 1,6-bisphosphate bound

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

Fructose-bisphosphatase

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

2q8m__assembly_1__model_1

2q8m__assembly_1__model_1 | I(q)

2q8m__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 (7)

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 non-polymer

Entity 7 Entity 7 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

CATH v4.4 (4 domains)

7. Citations (1)

T-like Fructose-1,6-bisphosphatase from Escherichia coli with AMP, Glucose 6-phosphate, and Fructose 1,6-bisphosphate bound

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

Fructose-bisphosphatase

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

2q8m__assembly_1__model_1

2q8m__assembly_1__model_1 | I(q)

2q8m__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 (7)

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 non-polymer

Entity 7 Entity 7 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

CATH v4.4 (4 domains)

7. Citations (1)