SAXSdb — 3dzc

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

UDP-N-acetylglucosamine 2-epimerase

Vibrio cholerae

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 × 2 CHLORIDE ION × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q9KTI5_VIBCH
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 25–396； UniProt 1–372 Author chain B； PDBConstruct 25–396； UniProt 1–372

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	3dzc
Deposition date deposition_date	2008-07-29
Structure title title	2.35 Angstrom resolution structure of WecB (VC0917), a UDP-N-acetylglucosamine 2-epimerase from Vibrio cholerae.
Keywords keywords	;UDP-N-acetylglucosamine 2-epimerase, Structural Genomics, Infectious Diseases, Isomerase, Center for Structural Genomics of Infectious Diseases, CSGID ;; ISOMERASE
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.

3dzc__assembly_1__model_1

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

Download this curve (.dat)

3dzc__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3dzc__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	33.04 Å
Rg (electron density)	32.97 Å
Total Rg	33.42 Å
Atom count	5776
Residues	746
Excluded volume	103290 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3dzc__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 (4)

Entity 1 Entity 1 polymer

Description description	UDP-N-acetylglucosamine 2-epimerase
Molecular weight formula_weight	43823.9 kDa
EC 编号 ec_number	5.1.3.14
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	6616

MHHHHHHSSGVDLGTENLYFQSNAMKKVLIVFGTRPEAIKMAPLVQQLCQDNRFVAKVCVTGQHREMLDQVLELFSITPDFDLNIMEPGQTLNGVTSKILLGMQQVLSSEQPDVVLVHGDTATTFAASLAAYYQQIPVGHVEAGLRTGNIYSPWPEEGNRKLTAALTQYHFAPTDTSRANLLQENYNAENIFVTGNTVIDALLAVREKIHTDMDLQATLESQFPMLDASKKLILVTGHRRESFGGGFERICQALITTAEQHPECQILYPVHLNPNVREPVNKLLKGVSNIVLIEPQQYLPFVYLMDRAHIILTDSGGIQEEAPSLGKPVLVMRETTERPEAVAAGTVKLVGTNQQQICDALSLLLTDPQAYQAMSQAHNPYGDGKACQRIADILAK

Source Source

Source organism organism	Vibrio cholerae
NCBI taxonomy ID ncbi_taxonomy_id	666
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	2

Entity 3 Entity 3 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	488

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d3dzca1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.87 — UDP-Glycosyltransferase/glycogen phosphorylase
Superfamily Superfamily superfamily	c.87.1 — UDP-Glycosyltransferase/glycogen phosphorylase
Family Family family	c.87.1.3 — UDP-N-acetylglucosamine 2-epimerase

Domain ID domain_id	d3dzca2
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	d3dzcb1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.87 — UDP-Glycosyltransferase/glycogen phosphorylase
Superfamily Superfamily superfamily	c.87.1 — UDP-Glycosyltransferase/glycogen phosphorylase
Family Family family	c.87.1.3 — UDP-N-acetylglucosamine 2-epimerase

Domain ID domain_id	d3dzcb2
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 (4 domains)

Domain ID domain_id	3dzcA01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	2000 — Glycogen Phosphorylase B;

Domain ID domain_id	3dzcA02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	2000 — Glycogen Phosphorylase B;

Domain ID domain_id	3dzcB01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	2000 — Glycogen Phosphorylase B;

Domain ID domain_id	3dzcB02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	2000 — Glycogen Phosphorylase B;

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Unit-cell length a length_a	81.391 Å
Unit-cell length b length_b	88.127 Å
Unit-cell length c length_c	132.193 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 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.350 Å
Low-resolution limit resolution_low	30.000 Å
R factor r_factor	0.1754
R_work r_work	0.1724
R_free r_free	0.2338

2.35 Angstrom resolution structure of WecB (VC0917), a UDP-N-acetylglucosamine 2-epimerase from Vibrio cholerae.

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

UDP-N-acetylglucosamine 2-epimerase

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

3dzc__assembly_1__model_1

3dzc__assembly_1__model_1 | I(q)

3dzc__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)

2.35 Angstrom resolution structure of WecB (VC0917), a UDP-N-acetylglucosamine 2-epimerase from Vibrio cholerae.

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

UDP-N-acetylglucosamine 2-epimerase

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

3dzc__assembly_1__model_1

3dzc__assembly_1__model_1 | I(q)

3dzc__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)