SAXSdb — 3co8

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

Alanine racemase

Oenococcus oeni

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	PYRIDOXAL-5'-PHOSPHATE × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q04HB7_OENOB
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 4–372； UniProt 3–371 Author chain B； PDBConstruct 4–372； UniProt 3–371

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	3co8
Deposition date deposition_date	2008-03-27
Structure title title	Crystal structure of alanine racemase from Oenococcus oeni
Keywords keywords	;Alanine racemase, Protein Structure Initiative II, PSI-II, NYSGXRC, 11082i, PLP, TIM barrel, Structural Genomics, New York SGX Research Center for Structural Genomics, Isomerase, Pyridoxal phosphate ;; 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.

3co8__assembly_1__model_1

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

Download this curve (.dat)

3co8__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3co8__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	28.24 Å
Rg (electron density)	27.48 Å
Total Rg	28.18 Å
Atom count	5578
Residues	689
Excluded volume	100280 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3co8__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	Alanine racemase
Molecular weight formula_weight	42946.5 kDa
EC 编号 ec_number	5.1.1.1
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	6204

MSLEAIHRSTRIEFSKSSLAYNVQYTKQVSGAKTLWLAVKSNAYGHGLLQVSKIARECGVDGLAVSVLDEGIAIRQAGIDDFILILGPIDVKYAPIASKYHFLTTVSSLDWLKSADKILGKEKLSVNLAVDTGMNRIGVRSKKDLKDEIEFLQEHSDHFSYDGIFTHFASSDNPDDHYFQRQKNRWYELIDGLIMPRYVHVMNSGAAMYHSKELPGCNSIARVGTVVYGVEPSEGVLGPIDKLKPVFELKSALTFVKKIPAGEGISYGSKFVTSRDTWIGTLPIGYGDGWLAEYQDFQLLIDGQKCRQVGQIAMDQMMVALPHEYPIGTEVTLIGKSGKYENTLYDLHKHSGVPPWKITVAFSDRLKRMVVDEGHHHHHH

Source Source

Source organism organism	Oenococcus oeni
NCBI taxonomy ID ncbi_taxonomy_id	203123
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 non-polymer

Description description	PYRIDOXAL-5'-PHOSPHATE
Molecular weight formula_weight	247.1 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	626

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6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

Domain ID domain_id	3co8A01
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	37 — Lyase, Ornithine Decarboxylase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — Lyase, Ornithine Decarboxylase; Chain A, domain 1

Domain ID domain_id	3co8A02
Class class	3 — Alpha Beta
Architecture architecture	20 — Alpha-Beta Barrel
Topology topology	20 — TIM Barrel
Homologous superfamily homologous superfamily	10 — Alanine racemase

Domain ID domain_id	3co8B01
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	37 — Lyase, Ornithine Decarboxylase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — Lyase, Ornithine Decarboxylase; Chain A, domain 1

Domain ID domain_id	3co8B02
Class class	3 — Alpha Beta
Architecture architecture	20 — Alpha-Beta Barrel
Topology topology	20 — TIM Barrel
Homologous superfamily homologous superfamily	10 — Alanine racemase

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Unit-cell length a length_a	47.397 Å
Unit-cell length b length_b	99.639 Å
Unit-cell length c length_c	84.670 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	103.26 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	1.700 Å
Low-resolution limit resolution_low	38.080 Å
R factor r_factor	0.2470
R_work r_work	0.2470
R_free r_free	0.2590

Crystal structure of alanine racemase from Oenococcus oeni

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

Alanine racemase

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

3co8__assembly_1__model_1

3co8__assembly_1__model_1 | I(q)

3co8__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)

Crystal structure of alanine racemase from Oenococcus oeni

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

Alanine racemase

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

3co8__assembly_1__model_1

3co8__assembly_1__model_1 | I(q)

3co8__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)