3aj1

The structure of AxCeSD octamer (N-terminal HIS-tag) from Acetobacter xylinum

Method: X-RAY DIFFRACTION

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

Cellulose synthase operon protein D

ACETOBACTER XYLINUS

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 8	water × 8	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ACSD_ACEXY
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 12–167； UniProt 1–156 Author chain B； PDBConstruct 12–167； UniProt 1–156 Author chain C； PDBConstruct 12–167； UniProt 1–156 Author chain D； PDBConstruct 12–167； UniProt 1–156 Author chain E； PDBConstruct 12–167； UniProt 1–156 Author chain F； PDBConstruct 12–167； UniProt 1–156 Author chain G； PDBConstruct 12–167； UniProt 1–156 Author chain H； PDBConstruct 12–167； UniProt 1–156

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	3aj1
Deposition date deposition_date	2010-05-20
Structure title title	The structure of AxCeSD octamer (N-terminal HIS-tag) from Acetobacter xylinum
Keywords keywords	;ALPHA AND BETA FOLD, OCTAMER, TETRAMER OF DIMERS, MOLECULE RING, CELLULOSE BIOSYNTHESIS, BIOSYNTHETIC PROTEIN, STRUCTURAL GENOMICS, NPPSFA, NATIONAL PROJECT ON PROTEIN STRUCTURAL AND FUNCTIONAL ANALYSES ;; BIOSYNTHETIC PROTEIN
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.

3aj1__assembly_1__model_1

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

Download this curve (.dat)

3aj1__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3aj1__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	33.86 Å
Rg (electron density)	32.40 Å
Total Rg	33.07 Å
Atom count	9539
Residues	1188
Excluded volume	170830 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3aj1__assembly_1__model_1`	octameric （8）	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 (2)

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6. Fold Classification (SCOP + CATH) 16 domains

CATH v4.4 (16 domains)

Domain ID domain_id	3aj1A01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	3790 —

Domain ID domain_id	3aj1A02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	2590 —

Domain ID domain_id	3aj1B01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	3790 —

Domain ID domain_id	3aj1B02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	2590 —

Domain ID domain_id	3aj1C01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	3790 —

Domain ID domain_id	3aj1C02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	2590 —

Domain ID domain_id	3aj1D01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	3790 —

Domain ID domain_id	3aj1D02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	2590 —

Domain ID domain_id	3aj1E01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	3790 —

Domain ID domain_id	3aj1E02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	2590 —

Domain ID domain_id	3aj1F01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	3790 —

Domain ID domain_id	3aj1F02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	2590 —

Domain ID domain_id	3aj1G01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	3790 —

Domain ID domain_id	3aj1G02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	2590 —

Domain ID domain_id	3aj1H01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	3790 —

Domain ID domain_id	3aj1H02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	2590 —

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Unit-cell length a length_a	77.700 Å
Unit-cell length b length_b	77.700 Å
Unit-cell length c length_c	213.924 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	24

Space group space_group	P 32
Space-group number int_tables_number	145
Crystal system crystal_system	—

Resolution resolution	2.500 Å
Low-resolution limit resolution_low	19.870 Å
R factor r_factor	0.2086
R_work r_work	0.2033
R_free r_free	0.2571

Description description	Cellulose synthase operon protein D
Molecular weight formula_weight	18988.7 kDa
Source method src_method	man
Copy count entity_count	8

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F,G,H
Atom count atom_count	9931

The structure of AxCeSD octamer (N-terminal HIS-tag) from Acetobacter xylinum

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

Cellulose synthase operon protein D

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

3aj1__assembly_1__model_1

3aj1__assembly_1__model_1 | I(q)

3aj1__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 16 domains

CATH v4.4 (16 domains)

7. Citations (2)

Source organism organism	ACETOBACTER XYLINUS
Common name common_name	Gluconacetobacter xylinus
NCBI taxonomy ID ncbi_taxonomy_id	28448
Host organism host_organism	Escherichia coli

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	392

The structure of AxCeSD octamer (N-terminal HIS-tag) from Acetobacter xylinum

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

Cellulose synthase operon protein D

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

3aj1__assembly_1__model_1

3aj1__assembly_1__model_1 | I(q)

3aj1__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 16 domains

CATH v4.4 (16 domains)

7. Citations (2)