SAXSdb — 2qea

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

Putative general stress protein 26

Jannaschia sp.

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	CALCIUM ION × 4 water × 2	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	CALCIUM ION × 6 water × 2	Consistent with protein count
3	Protein homooligomer	Homooligomer	Protein 6	CALCIUM ION × 14 water × 6	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q28TU0_JANSC
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–160； UniProt 1–159 Author chain B； PDBConstruct 2–160； UniProt 1–159 Author chain C； PDBConstruct 2–160； UniProt 1–159

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	2qea
Deposition date deposition_date	2007-06-25
Structure title title	CRYSTAL STRUCTURE OF A PUTATIVE GENERAL STRESS PROTEIN 26 (JANN_0955) FROM JANNASCHIA SP. CCS1 AT 2.46 A RESOLUTION
Keywords keywords	;PUTATIVE GENERAL STRESS PROTEIN 26, STRUCTURAL GENOMICS, JOINT CENTER FOR STRUCTURAL GENOMICS, JCSG, PROTEIN STRUCTURE INITIATIVE, PSI-2, OXIDOREDUCTASE ;; OXIDOREDUCTASE
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.

2qea__assembly_2__model_1

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

Download this curve (.dat)

2qea__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2qea__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	21.46 Å
Rg (electron density)	20.47 Å
Total Rg	21.18 Å
Atom count	2406
Residues	310
Excluded volume	42424 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2qea__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2qea__assembly_2__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`2qea__assembly_3__model_1`	hexameric （6）	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	Putative general stress protein 26
Molecular weight formula_weight	17457.6 kDa
Source method src_method	man
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C
Atom count atom_count	3708

GMADLTHEFWDRLEDVRSGMLGIKGQGRLIPMSPQTDDDAPGAIWFITAKGTDLAKGVAAGPQPAQFVVSDDGEGLYADLDGTLERSTDREALDEFWSFVADAWFDGGQHDPDVCLLKFTPASGEISITEGGGARFLYEIAKAHLTDETPDMGEQATVTF

Source Source

Source organism organism	Jannaschia sp.
NCBI taxonomy ID ncbi_taxonomy_id	290400
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	syn
Copy count entity_count	7

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	115

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6. Fold Classification (SCOP + CATH) 3 domains

CATH v4.4 (3 domains)

Domain ID domain_id	2qeaA00
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	110 — Pnp Oxidase; Chain A
Homologous superfamily homologous superfamily	10 — Electron Transport, Fmn-binding Protein; Chain A

Domain ID domain_id	2qeaB00
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	110 — Pnp Oxidase; Chain A
Homologous superfamily homologous superfamily	10 — Electron Transport, Fmn-binding Protein; Chain A

Domain ID domain_id	2qeaC00
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	110 — Pnp Oxidase; Chain A
Homologous superfamily homologous superfamily	10 — Electron Transport, Fmn-binding Protein; Chain A

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Unit-cell length a length_a	73.673 Å
Unit-cell length b length_b	73.673 Å
Unit-cell length c length_c	367.524 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	36

Space group space_group	P 61 2 2
Space-group number int_tables_number	178
Crystal system crystal_system	—

Resolution resolution	2.460 Å
Low-resolution limit resolution_low	29.604 Å
R factor r_factor	0.2330
R_work r_work	0.2310
R_free r_free	0.2750

CRYSTAL STRUCTURE OF A PUTATIVE GENERAL STRESS PROTEIN 26 (JANN_0955) FROM JANNASCHIA SP. CCS1 AT 2.46 A RESOLUTION

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

Putative general stress protein 26

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

2qea__assembly_2__model_1

2qea__assembly_2__model_1 | I(q)

2qea__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 (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) 3 domains

CATH v4.4 (3 domains)

7. Citations (1)

CRYSTAL STRUCTURE OF A PUTATIVE GENERAL STRESS PROTEIN 26 (JANN_0955) FROM JANNASCHIA SP. CCS1 AT 2.46 A RESOLUTION

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

Putative general stress protein 26

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

2qea__assembly_2__model_1

2qea__assembly_2__model_1 | I(q)

2qea__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 (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) 3 domains

CATH v4.4 (3 domains)

7. Citations (1)