SAXSdb — 3cb3

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

Mandelate racemase/muconate lactonizing enzyme

Polaromonas sp.

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	MAGNESIUM ION × 4 L-GLUCARIC ACID × 2 water × 2	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	MAGNESIUM ION × 4 L-GLUCARIC ACID × 2 water × 2	Consistent with protein count
3	Protein homooligomer	Homooligomer	Protein 8	MAGNESIUM ION × 16 L-GLUCARIC ACID × 8 water × 8	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q12GE3_POLSJ
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 4–385； UniProt 2–383 Author chain B； PDBConstruct 4–385； UniProt 2–383 Author chain C； PDBConstruct 4–385； UniProt 2–383 Author chain D； PDBConstruct 4–385； UniProt 2–383

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	3cb3
Deposition date deposition_date	2008-02-21
Structure title title	Crystal structure of L-Talarate dehydratase from Polaromonas sp. JS666 complexed with Mg and L-glucarate
Keywords keywords	;Structural genomics, NYSGXRC, target 9382a, L-Talarate dehydratase, L-glucarate, PSI-2, Protein Structure Initiative, New York SGX Research Center for Structural Genomics, ISOMERASE ;; 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.

3cb3__assembly_1__model_1

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

Download this curve (.dat)

3cb3__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3cb3__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	27.98 Å
Rg (electron density)	27.05 Å
Total Rg	27.89 Å
Atom count	5656
Residues	731
Excluded volume	100460 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3cb3__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3cb3__assembly_2__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`3cb3__assembly_3__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 (4)

Entity 1 Entity 1 polymer

Description description	Mandelate racemase/muconate lactonizing enzyme
Molecular weight formula_weight	42991.0 kDa
Source method src_method	man
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	11715

MSLKTTTSSTPSDRITWVRISSCYLPLATPISDAKVLTGRQKPMTEIAILFAEIETAGGHQGLGFSYSKRAGGPGQFAHAREIAPALIGEDPSDIAKLWDKLCWAGASAGRSGLSTQAIGAFDVALWDLKAKRAGLSLAKLLGSYRDSVRCYNTSGGFLHTPIDQLMVNASASIERGIGGIKLKVGQPDGALDIARVTAVRKHLGDAVPLMVDANQQWDRPTAQRMCRIFEPFNLVWIEEPLDAYDHEGHAALALQFDTPIATGEMLTSAAEHGDLIRHRAADYLMPDAPRVGGITPFLKIASLAEHAGLMLAPHFAMELHVHLAAAYPREPWVEHFEWLEPLFNERIEIRDGRMLVPTRPGLGLTLSGQVKAWTREEAQVGTRPEGHHHHHH

Source Source

Source organism organism	Polaromonas sp.
NCBI taxonomy ID ncbi_taxonomy_id	296591
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	8

Entity 3 Entity 3 non-polymer

Description description	L-GLUCARIC ACID
Molecular weight formula_weight	210.1 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	500

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6. Fold Classification (SCOP + CATH) 8 domains

CATH v4.4 (8 domains)

Domain ID domain_id	3cb3A01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	390 — Enolase-like; domain 1
Homologous superfamily homologous superfamily	10 — Enolase-like, N-terminal domain

Domain ID domain_id	3cb3A02
Class class	3 — Alpha Beta
Architecture architecture	20 — Alpha-Beta Barrel
Topology topology	20 — TIM Barrel
Homologous superfamily homologous superfamily	120 — Enolase-like C-terminal domain

Domain ID domain_id	3cb3B01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	390 — Enolase-like; domain 1
Homologous superfamily homologous superfamily	10 — Enolase-like, N-terminal domain

Domain ID domain_id	3cb3B02
Class class	3 — Alpha Beta
Architecture architecture	20 — Alpha-Beta Barrel
Topology topology	20 — TIM Barrel
Homologous superfamily homologous superfamily	120 — Enolase-like C-terminal domain

Domain ID domain_id	3cb3C01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	390 — Enolase-like; domain 1
Homologous superfamily homologous superfamily	10 — Enolase-like, N-terminal domain

Domain ID domain_id	3cb3C02
Class class	3 — Alpha Beta
Architecture architecture	20 — Alpha-Beta Barrel
Topology topology	20 — TIM Barrel
Homologous superfamily homologous superfamily	120 — Enolase-like C-terminal domain

Domain ID domain_id	3cb3D01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	390 — Enolase-like; domain 1
Homologous superfamily homologous superfamily	10 — Enolase-like, N-terminal domain

Domain ID domain_id	3cb3D02
Class class	3 — Alpha Beta
Architecture architecture	20 — Alpha-Beta Barrel
Topology topology	20 — TIM Barrel
Homologous superfamily homologous superfamily	120 — Enolase-like C-terminal domain

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Unit-cell length a length_a	195.466 Å
Unit-cell length b length_b	84.739 Å
Unit-cell length c length_c	118.247 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	126.04 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	16

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	2.000 Å
Low-resolution limit resolution_low	24.910 Å
R factor r_factor	0.2100
R_work r_work	0.2100
R_free r_free	0.2390

Crystal structure of L-Talarate dehydratase from Polaromonas sp. JS666 complexed with Mg and L-glucarate

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

Mandelate racemase/muconate lactonizing 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

3cb3__assembly_1__model_1

3cb3__assembly_1__model_1 | I(q)

3cb3__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

CATH v4.4 (8 domains)

7. Citations (1)

Crystal structure of L-Talarate dehydratase from Polaromonas sp. JS666 complexed with Mg and L-glucarate

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

Mandelate racemase/muconate lactonizing 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

3cb3__assembly_1__model_1

3cb3__assembly_1__model_1 | I(q)

3cb3__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

CATH v4.4 (8 domains)

7. Citations (1)