1zmb

Crystal Structure of the Putative Acetylxylan Esterase from Clostridium acetobutylicum, Northeast Structural Genomics Target CaR6

Method: X-RAY DIFFRACTION

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

Acetylxylan esterase related enzyme

Clostridium acetobutylicum

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q97LM8_CLOAB
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–282； UniProt 1–282 Author chain B； PDBConstruct 1–282； UniProt 1–282 Author chain C； PDBConstruct 1–282； UniProt 1–282 Author chain D； PDBConstruct 1–282； UniProt 1–282 Author chain E； PDBConstruct 1–282； UniProt 1–282 Author chain F； PDBConstruct 1–282； UniProt 1–282

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	1zmb
Deposition date deposition_date	2005-05-10
Structure title title	Crystal Structure of the Putative Acetylxylan Esterase from Clostridium acetobutylicum, Northeast Structural Genomics Target CaR6
Keywords keywords	;alpha-beta protein, Structural Genomics, PSI, Protein Structure Initiative, Northeast Structural Genomics Consortium, NESG, UNKNOWN FUNCTION ;; STRUCTURAL GENOMICS, UNKNOWN FUNCTION
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.

1zmb__assembly_2__model_1

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

Download this curve (.dat)

1zmb__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1zmb__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	24.98 Å
Rg (electron density)	24.33 Å
Total Rg	24.95 Å
Atom count	4556
Residues	548
Excluded volume	81579 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1zmb__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1zmb__assembly_2__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`1zmb__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 (2)

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6. Fold Classification (SCOP + CATH) 24 domains

SCOP 2.08 (12 domains)

Domain ID domain_id	d1zmba1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.23 — Flavodoxin-like
Superfamily Superfamily superfamily	c.23.10 — SGNH hydrolase
Family Family family	c.23.10.7 — Putative acetylxylan esterase-like

Domain ID domain_id	d1zmba2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d1zmbb2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.23 — Flavodoxin-like
Superfamily Superfamily superfamily	c.23.10 — SGNH hydrolase
Family Family family	c.23.10.7 — Putative acetylxylan esterase-like

Domain ID domain_id	d1zmbb3
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d1zmbc2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.23 — Flavodoxin-like
Superfamily Superfamily superfamily	c.23.10 — SGNH hydrolase
Family Family family	c.23.10.7 — Putative acetylxylan esterase-like

Domain ID domain_id	d1zmbc3
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d1zmbd2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.23 — Flavodoxin-like
Superfamily Superfamily superfamily	c.23.10 — SGNH hydrolase
Family Family family	c.23.10.7 — Putative acetylxylan esterase-like

Domain ID domain_id	d1zmbd3
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d1zmbe2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.23 — Flavodoxin-like
Superfamily Superfamily superfamily	c.23.10 — SGNH hydrolase
Family Family family	c.23.10.7 — Putative acetylxylan esterase-like

Domain ID domain_id	d1zmbe3
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d1zmbf2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.23 — Flavodoxin-like
Superfamily Superfamily superfamily	c.23.10 — SGNH hydrolase
Family Family family	c.23.10.7 — Putative acetylxylan esterase-like

Domain ID domain_id	d1zmbf3
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

CATH v4.4 (12 domains)

Domain ID domain_id	1zmbA01
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	1zmbA02
Class class	6 — Special
Architecture architecture	10 — Helix non-globular
Topology topology	170 — Non-ribosomal Peptide Synthetase Peptidyl Carrier Protein; Chain A
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	1zmbB01
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	1zmbB02
Class class	6 — Special
Architecture architecture	10 — Helix non-globular
Topology topology	170 — Non-ribosomal Peptide Synthetase Peptidyl Carrier Protein; Chain A
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	1zmbC01
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	1zmbC02
Class class	6 — Special
Architecture architecture	10 — Helix non-globular
Topology topology	170 — Non-ribosomal Peptide Synthetase Peptidyl Carrier Protein; Chain A
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	1zmbD01
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	1zmbD02
Class class	6 — Special
Architecture architecture	10 — Helix non-globular
Topology topology	170 — Non-ribosomal Peptide Synthetase Peptidyl Carrier Protein; Chain A
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	1zmbE01
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	1zmbE02
Class class	6 — Special
Architecture architecture	10 — Helix non-globular
Topology topology	170 — Non-ribosomal Peptide Synthetase Peptidyl Carrier Protein; Chain A
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	1zmbF01
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	1zmbF02
Class class	6 — Special
Architecture architecture	10 — Helix non-globular
Topology topology	170 — Non-ribosomal Peptide Synthetase Peptidyl Carrier Protein; Chain A
Homologous superfamily homologous superfamily	10 —

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Unit-cell length a length_a	70.999 Å
Unit-cell length b length_b	87.936 Å
Unit-cell length c length_c	103.510 Å
Unit-cell angle α angle_alpha	106.50 °
Unit-cell angle β angle_beta	100.22 °
Unit-cell angle γ angle_gamma	113.80 °
Molecules per unit cell Z z_pdb	6

Space group space_group	P 1
Space-group number int_tables_number	1
Crystal system crystal_system	—

Resolution resolution	2.610 Å
Low-resolution limit resolution_low	29.310 Å
R factor r_factor	0.2430
R_work r_work	0.2430
R_free r_free	0.2690

Description description	Acetylxylan esterase related enzyme
Molecular weight formula_weight	33720.8 kDa
Source method src_method	man
Copy count entity_count	6

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F
Atom count atom_count	13791

Crystal Structure of the Putative Acetylxylan Esterase from Clostridium acetobutylicum, Northeast Structural Genomics Target CaR6

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

Acetylxylan esterase related enzyme

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

1zmb__assembly_2__model_1

1zmb__assembly_2__model_1 | I(q)

1zmb__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 24 domains

SCOP 2.08 (12 domains)

CATH v4.4 (12 domains)

7. Citations (1)

Source organism organism	Clostridium acetobutylicum
NCBI taxonomy ID ncbi_taxonomy_id	272562
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	123

Crystal Structure of the Putative Acetylxylan Esterase from Clostridium acetobutylicum, Northeast Structural Genomics Target CaR6

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

Acetylxylan esterase related enzyme

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

1zmb__assembly_2__model_1

1zmb__assembly_2__model_1 | I(q)

1zmb__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 24 domains

SCOP 2.08 (12 domains)

CATH v4.4 (12 domains)

7. Citations (1)