SAXSdb — 1qi2

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

ENDOGLUCANASE B

Bacillus agaradhaerens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Monomer	Protein 1 其他Polymer 1	beta-D-glucopyranose-(1-4)-beta-D-glucopyranose-(1-4)-2-deoxy-2-fluoro-alpha-D-glucopyranose × 1 CALCIUM ION × 5 water × 1	Consistent with protein count
2	Other combination	Homooligomer	Protein 2 其他Polymer 2	beta-D-glucopyranose-(1-4)-beta-D-glucopyranose-(1-4)-2-deoxy-2-fluoro-alpha-D-glucopyranose × 2 CALCIUM ION × 10 water × 2	Consistent with protein count
3	Other combination	Homooligomer	Protein 2 其他Polymer 2	beta-D-glucopyranose-(1-4)-beta-D-glucopyranose-(1-4)-2-deoxy-2-fluoro-alpha-D-glucopyranose × 2 CALCIUM ION × 10 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	GUN2_BACS4
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–305； UniProt 27–331

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	1qi2
Deposition date deposition_date	1999-06-02
Structure title title	ENDOGLUCANASE CEL5A FROM BACILLUS AGARADHAERENS IN THE TETRAGONAL CRYSTAL FORM IN COMPLEX WITH 2',4'-DINITROPHENYL 2-DEOXY-2-FLUORO-B-D-CELLOTRIOSIDE
Keywords keywords	HYDROLASE, CELLULOSE DEGRADATION, ENDOGLUCANASE, GLYCOSHYDROLASE FAMILY 5; 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.

1qi2__assembly_2__model_1

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

Download this curve (.dat)

1qi2__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1qi2__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	30.53 Å
Rg (electron density)	29.80 Å
Total Rg	30.26 Å
Atom count	4852
Residues	604
Excluded volume	84997 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1qi2__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1qi2__assembly_2__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`1qi2__assembly_3__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 (4)

Entity 1 Entity 1 polymer

Description description	ENDOGLUCANASE B
Molecular weight formula_weight	34156.2 kDa
EC 编号 ec_number	3.2.1.4
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	2813

DNDSVVEEHGQLSISNGELVNERGEQVQLKGMSSHGLQWYGQFVNYESMKWLRDDWGINVFRAAMYTSSGGYIDDPSVKEKVKEAVEAAIDLDIYVIIDWHILSDNDPNIYKEEAKDFFDEMSELYGDYPNVIYEIANEPNGSDVTWGNQIKPYAEEVIPIIRNNDPNNIIIVGTGTWSQDVHHAADNQLADPNVMYAFHFYAGTHGQNLRDQVDYALDQGAAIFVSEWGTSAATGDGGVFLDEAQVWIDFMDERNLSWANWSLTHKDESSAALMPGANPTGGWTEAELSPSGTFVREKIRESAS

Source Source

Source organism organism	Bacillus agaradhaerens
NCBI taxonomy ID ncbi_taxonomy_id	76935
Host organism host_organism	Bacillus subtilis

Entity 2 Entity 2 branched

Description description	beta-D-glucopyranose-(1-4)-beta-D-glucopyranose-(1-4)-2-deoxy-2-fluoro-alpha-D-glucopyranose
Molecular weight formula_weight	506.4 kDa
Source method src_method	man
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	syn
Copy count entity_count	5

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	381

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6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1qi2a_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.1 — TIM beta/alpha-barrel
Superfamily Superfamily superfamily	c.1.8 — (Trans)glycosidases
Family Family family	c.1.8.3 — beta-glycanases

CATH v4.4 (1 domains)

Domain ID domain_id	1qi2A00
Class class	3 — Alpha Beta
Architecture architecture	20 — Alpha-Beta Barrel
Topology topology	20 — TIM Barrel
Homologous superfamily homologous superfamily	80 — Glycosidases

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Unit-cell length a length_a	74.540 Å
Unit-cell length b length_b	74.540 Å
Unit-cell length c length_c	135.930 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 43 21 2
Space-group number int_tables_number	96
Crystal system crystal_system	—

Resolution resolution	1.750 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	0.1700
R_work r_work	0.1770
R_free r_free	0.2100

ENDOGLUCANASE CEL5A FROM BACILLUS AGARADHAERENS IN THE TETRAGONAL CRYSTAL FORM IN COMPLEX WITH 2',4'-DINITROPHENYL 2-DEOXY-2-FLUORO-B-D-CELLOTRIOSIDE

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

ENDOGLUCANASE B

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

1qi2__assembly_2__model_1

1qi2__assembly_2__model_1 | I(q)

1qi2__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 branched

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (1)

ENDOGLUCANASE CEL5A FROM BACILLUS AGARADHAERENS IN THE TETRAGONAL CRYSTAL FORM IN COMPLEX WITH 2',4'-DINITROPHENYL 2-DEOXY-2-FLUORO-B-D-CELLOTRIOSIDE

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

ENDOGLUCANASE B

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

1qi2__assembly_2__model_1

1qi2__assembly_2__model_1 | I(q)

1qi2__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 branched

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (1)