SAXSdb — 2q4o

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

Uncharacterized protein At2g37210/T2N18.3

Arabidopsis thaliana

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q8L8B8_ARATH
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–215； UniProt 1–215 Author chain B； PDBConstruct 1–215； UniProt 1–215

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	2q4o
Deposition date deposition_date	2007-05-31
Structure title title	Ensemble refinement of the crystal structure of a lysine decarboxylase-like protein from Arabidopsis thaliana gene At2g37210
Keywords keywords	;Ensemble Refinement, Refinement Methodology Development, AT2G37210, LYSINE DECARBOXYLASE-LIKE PROTEIN, Structural Genomics, Protein Structure Initiative, PSI, Center for Eukaryotic Structural Genomics, CESG, 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.

2q4o__assembly_1__model_1

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

Download this curve (.dat)

2q4o__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2q4o__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	21.45 Å
Rg (electron density)	20.26 Å
Total Rg	21.17 Å
Atom count	2647
Residues	340
Excluded volume	47460 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2q4o__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	2	`2q4o__assembly_1__model_2`	dimeric （2）	Excluded	—	—
	Exclusion reason： The official assembly declares water and a ligand or ion, but those components are absent from the generated coordinate model, leaving the structure composition incomplete.
1	3	`2q4o__assembly_1__model_3`	dimeric （2）	Excluded	—	—
	Exclusion reason： The official assembly declares water and a ligand or ion, but those components are absent from the generated coordinate model, leaving the structure composition incomplete.
1	4	`2q4o__assembly_1__model_4`	dimeric （2）	Excluded	—	—
	Exclusion reason： The official assembly declares water and a ligand or ion, but those components are absent from the generated coordinate model, leaving the structure composition incomplete.
1	5	`2q4o__assembly_1__model_5`	dimeric （2）	Excluded	—	—
	Exclusion reason： The official assembly declares water and a ligand or ion, but those components are absent from the generated coordinate model, leaving the structure composition incomplete.
1	6	`2q4o__assembly_1__model_6`	dimeric （2）	Excluded	—	—
	Exclusion reason： The official assembly declares water and a ligand or ion, but those components are absent from the generated coordinate model, leaving the structure composition incomplete.
1	7	`2q4o__assembly_1__model_7`	dimeric （2）	Excluded	—	—
	Exclusion reason： The official assembly declares water and a ligand or ion, but those components are absent from the generated coordinate model, leaving the structure composition incomplete.
1	8	`2q4o__assembly_1__model_8`	dimeric （2）	Excluded	—	—
	Exclusion reason： The official assembly declares water and a ligand or ion, but those components are absent from the generated coordinate model, leaving the structure composition incomplete.

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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	Uncharacterized protein At2g37210/T2N18.3
Molecular weight formula_weight	23916.3 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	22875

MEIKGESMQKSKFRRICVFCGSSQGKKSSYQDAAVDLGNELVSRNIDLVYGGGSIGLMGLVSQAVHDGGRHVIGIIPKTLMPRELTGETVGEVRAVADMHQRKAEMAKHSDAFIALPGGYGTLEELLEVITWAQLGIHDKPVGLLNVDGYYNSLLSFIDKAVEEGFISPTAREIIVSAPTAKELVKKLEEYAPCHERVATKLCWEMERIGYSSEE

Source Source

Source organism organism	Arabidopsis thaliana
Common name common_name	thale cress
NCBI taxonomy ID ncbi_taxonomy_id	3702
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	222

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d2q4oa_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.129 — MCP/YpsA-like
Superfamily Superfamily superfamily	c.129.1 — MCP/YpsA-like
Family Family family	c.129.1.1 — MoCo carrier protein-like

Domain ID domain_id	d2q4ob_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.129 — MCP/YpsA-like
Superfamily Superfamily superfamily	c.129.1 — MCP/YpsA-like
Family Family family	c.129.1.1 — MoCo carrier protein-like

CATH v4.4 (2 domains)

Domain ID domain_id	2q4oA00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	450 —

Domain ID domain_id	2q4oB00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	450 —

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Unit-cell length a length_a	53.403 Å
Unit-cell length b length_b	66.773 Å
Unit-cell length c length_c	98.639 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	1.950 Å
Low-resolution limit resolution_low	46.960 Å
R factor r_factor	0.1680
R_work r_work	0.1680
R_free r_free	0.2240

Ensemble refinement of the crystal structure of a lysine decarboxylase-like protein from Arabidopsis thaliana gene At2g37210

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

Uncharacterized protein At2g37210/T2N18.3

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

2q4o__assembly_1__model_1

2q4o__assembly_1__model_1 | I(q)

2q4o__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (2)

Ensemble refinement of the crystal structure of a lysine decarboxylase-like protein from Arabidopsis thaliana gene At2g37210

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

Uncharacterized protein At2g37210/T2N18.3

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

2q4o__assembly_1__model_1

2q4o__assembly_1__model_1 | I(q)

2q4o__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (2)