SAXSdb — 2w9x

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

PUTATIVE ACETYL XYLAN ESTERASE

CELLVIBRIO JAPONICUS

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	GLYCEROL × 7 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	B3PDE5_CELJU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–360； UniProt 1–360 Author chain B； PDBConstruct 1–360； UniProt 1–360

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	2w9x
Deposition date deposition_date	2009-01-29
Structure title title	The active site of a carbohydrate esterase displays divergent catalytic and non-catalytic binding functions
Keywords keywords	CARBOHYDRATE ESTERASE FAMILY 2, HYDROLASE, ACETYL XYLAN ESTERASE; 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.

2w9x__assembly_1__model_1

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

Download this curve (.dat)

2w9x__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2w9x__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	30.30 Å
Rg (electron density)	30.05 Å
Total Rg	30.61 Å
Atom count	5139
Residues	641
Excluded volume	91212 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2w9x__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	PUTATIVE ACETYL XYLAN ESTERASE
Molecular weight formula_weight	40906.1 kDa
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	5585

MKPHALIGLLAGMLLSSSLYAADSTKPLPLHIGGRVLVESPANQPVSYTYSWPAVYFETAFKGQSLTLKFDDDQNIFRLIVDDKAPVVINKPGKVDYPVESLAPGKHRVRLEKLTETQSTSGRFLGFYTDPSAKPLALPKRKRQIEFIGDSFTVGYGNTSPSRECTDEELFKTTNSQMAFGPLTAKAFDADYQINASSGFGIVRNYNGTSPDKSLLSLYPYTLNNPDQLYHNKHWKPQVIVIGLGTNDFSTALNDNERWKTREALHADYVANYVKFVKQLHSNNARAQFILMNSDQSNGEIAEQVGKVVAQLKGGGLHQVEQIVFKGLDYSGCHWHPSANDDQLLANLLITHLQQKKGIWLEHHHH

Source Source

Source organism organism	CELLVIBRIO JAPONICUS
NCBI taxonomy ID ncbi_taxonomy_id	155077
Host organism host_organism	ESCHERICHIA COLI

Entity 2 Entity 2 non-polymer

Description description	GLYCEROL
Molecular weight formula_weight	92.1 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	418

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6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

Domain ID domain_id	2w9xA01
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	120 — Jelly Rolls
Homologous superfamily homologous superfamily	260 — Galactose-binding domain-like

Domain ID domain_id	2w9xA02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1110 — SGNH hydrolase

Domain ID domain_id	2w9xB01
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	120 — Jelly Rolls
Homologous superfamily homologous superfamily	260 — Galactose-binding domain-like

Domain ID domain_id	2w9xB02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1110 — SGNH hydrolase

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Unit-cell length a length_a	75.274 Å
Unit-cell length b length_b	75.274 Å
Unit-cell length c length_c	141.620 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
Space-group number int_tables_number	78
Crystal system crystal_system	—

Resolution resolution	2.000 Å
Low-resolution limit resolution_low	50.000 Å
R factor r_factor	0.1930
R_work r_work	0.1910
R_free r_free	0.2310

The active site of a carbohydrate esterase displays divergent catalytic and non-catalytic binding functions

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

PUTATIVE ACETYL XYLAN ESTERASE

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

2w9x__assembly_1__model_1

2w9x__assembly_1__model_1 | I(q)

2w9x__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

CATH v4.4 (4 domains)

7. Citations (1)

The active site of a carbohydrate esterase displays divergent catalytic and non-catalytic binding functions

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

PUTATIVE ACETYL XYLAN ESTERASE

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

2w9x__assembly_1__model_1

2w9x__assembly_1__model_1 | I(q)

2w9x__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

CATH v4.4 (4 domains)

7. Citations (1)