SAXSdb — 1j3q

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

Phosphoglucose Isomerase

Thermococcus litoralis

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	FE (III) ION × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	G6PI_THELI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–190； UniProt 1–190 Author chain B； PDBConstruct 1–190； UniProt 1–190

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	1j3q
Deposition date deposition_date	2003-02-11
Structure title title	Crystal structure of Thermococcus litoralis phosphogrucose isomerase soaked with FeSO4
Keywords keywords	phosphoglucose isomerase, cupin superfamily, iron ion, archaea, ISOMERASE; ISOMERASE
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.

1j3q__assembly_1__model_1

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

Download this curve (.dat)

1j3q__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1j3q__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	23.55 Å
Rg (electron density)	22.56 Å
Total Rg	23.52 Å
Atom count	2969
Residues	370
Excluded volume	53204 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1j3q__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	Phosphoglucose Isomerase
Molecular weight formula_weight	21749.9 kDa
EC 编号 ec_number	5.3.1.9
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	3205

MKYKEPFGVKLDFETGIIENAKKSVRRLSDMKGYFIDEEAWKKMVEEGDPVVYEVYAIEQEEKEGDLNFATTVLYPGKVGNEFFMTKGHYHSKIDRAEVYFALKGKGGMLLQTPEGEARFIEMEPGTIVYVPPYWAHRTINTGDKPFIFLALYPADAGHDYGTIAEKGFSKIVVEENGKVVVKDNPKWRM

Source Source

Source organism organism	Thermococcus litoralis
NCBI taxonomy ID ncbi_taxonomy_id	2265
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 non-polymer

Description description	FE (III) ION
Molecular weight formula_weight	55.8 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	236

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1j3qa_
Class class	b — All beta proteins
Fold Fold fold	b.82 — Double-stranded beta-helix
Superfamily Superfamily superfamily	b.82.1 — RmlC-like cupins
Family Family family	b.82.1.7 — Glucose-6-phosphate isomerase, GPI

Domain ID domain_id	d1j3qb_
Class class	b — All beta proteins
Fold Fold fold	b.82 — Double-stranded beta-helix
Superfamily Superfamily superfamily	b.82.1 — RmlC-like cupins
Family Family family	b.82.1.7 — Glucose-6-phosphate isomerase, GPI

CATH v4.4 (2 domains)

Domain ID domain_id	1j3qA00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	120 — Jelly Rolls
Homologous superfamily homologous superfamily	10 — Jelly Rolls

Domain ID domain_id	1j3qB00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	120 — Jelly Rolls
Homologous superfamily homologous superfamily	10 — Jelly Rolls

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Unit-cell length a length_a	40.520 Å
Unit-cell length b length_b	81.070 Å
Unit-cell length c length_c	126.939 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	1.850 Å
Low-resolution limit resolution_low	29.270 Å
R factor r_factor	0.2380
R_work r_work	0.2380
R_free r_free	0.2780

Crystal structure of Thermococcus litoralis phosphogrucose isomerase soaked with FeSO4

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

Phosphoglucose Isomerase

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

1j3q__assembly_1__model_1

1j3q__assembly_1__model_1 | I(q)

1j3q__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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (2)

Crystal structure of Thermococcus litoralis phosphogrucose isomerase soaked with FeSO4

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

Phosphoglucose Isomerase

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

1j3q__assembly_1__model_1

1j3q__assembly_1__model_1 | I(q)

1j3q__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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (2)