SAXSdb — 1l3a

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

p24: plant transcriptional regulator PBF-2

Solanum tuberosum

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 4	water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q9LL85_SOLTU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 14–219； UniProt 68–273 Author chain B； PDBConstruct 14–219； UniProt 68–273 Author chain C； PDBConstruct 14–219； UniProt 68–273 Author chain D； PDBConstruct 14–219； UniProt 68–273

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	1l3a
Deposition date deposition_date	2002-02-26
Structure title title	Structure of the plant transcriptional regulator PBF-2
Keywords keywords	PBF-2, single strand DNA binding protein, plant, whirly, transcriptionnal activator, cyclic C4 symmetry, DNA BINDING PROTEIN; DNA BINDING PROTEIN
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.

1l3a__assembly_1__model_1

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

Download this curve (.dat)

1l3a__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1l3a__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	29.22 Å
Rg (electron density)	27.55 Å
Total Rg	28.45 Å
Atom count	5435
Residues	689
Excluded volume	97263 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1l3a__assembly_1__model_1`	tetrameric （4）	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) 9 domains

SCOP 2.08 (5 domains)

Domain ID domain_id	d1l3aa_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.18 — ssDNA-binding transcriptional regulator domain
Superfamily Superfamily superfamily	d.18.1 — ssDNA-binding transcriptional regulator domain
Family Family family	d.18.1.2 — Plant transcriptional regulator PBF-2

Domain ID domain_id	d1l3ab_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.18 — ssDNA-binding transcriptional regulator domain
Superfamily Superfamily superfamily	d.18.1 — ssDNA-binding transcriptional regulator domain
Family Family family	d.18.1.2 — Plant transcriptional regulator PBF-2

Domain ID domain_id	d1l3ac1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.18 — ssDNA-binding transcriptional regulator domain
Superfamily Superfamily superfamily	d.18.1 — ssDNA-binding transcriptional regulator domain
Family Family family	d.18.1.2 — Plant transcriptional regulator PBF-2

Domain ID domain_id	d1l3ac2
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	d1l3ad_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.18 — ssDNA-binding transcriptional regulator domain
Superfamily Superfamily superfamily	d.18.1 — ssDNA-binding transcriptional regulator domain
Family Family family	d.18.1.2 — Plant transcriptional regulator PBF-2

CATH v4.4 (4 domains)

Domain ID domain_id	1l3aA00
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	31 — Transcriptional Co-activator pc4; Chain A
Homologous superfamily homologous superfamily	10 — Transcriptional Coactivator Pc4; Chain A

Domain ID domain_id	1l3aB00
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	31 — Transcriptional Co-activator pc4; Chain A
Homologous superfamily homologous superfamily	10 — Transcriptional Coactivator Pc4; Chain A

Domain ID domain_id	1l3aC00
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	31 — Transcriptional Co-activator pc4; Chain A
Homologous superfamily homologous superfamily	10 — Transcriptional Coactivator Pc4; Chain A

Domain ID domain_id	1l3aD00
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	31 — Transcriptional Co-activator pc4; Chain A
Homologous superfamily homologous superfamily	10 — Transcriptional Coactivator Pc4; Chain A

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Unit-cell length a length_a	69.869 Å
Unit-cell length b length_b	89.807 Å
Unit-cell length c length_c	144.390 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	16

Space group space_group	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.300 Å
Low-resolution limit resolution_low	42.420 Å
R factor r_factor	0.2160
R_work r_work	0.2160
R_free r_free	0.2670

Description description	p24: plant transcriptional regulator PBF-2
Molecular weight formula_weight	25413.4 kDa
Source method src_method	man
Copy count entity_count	4

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	5912

Structure of the plant transcriptional regulator PBF-2

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

p24: plant transcriptional regulator PBF-2

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

1l3a__assembly_1__model_1

1l3a__assembly_1__model_1 | I(q)

1l3a__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 9 domains

SCOP 2.08 (5 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Source organism organism	Solanum tuberosum
Common name common_name	potato
NCBI taxonomy ID ncbi_taxonomy_id	4113
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	477

Structure of the plant transcriptional regulator PBF-2

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

p24: plant transcriptional regulator PBF-2

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

1l3a__assembly_1__model_1

1l3a__assembly_1__model_1 | I(q)

1l3a__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 9 domains

SCOP 2.08 (5 domains)

CATH v4.4 (4 domains)

7. Citations (1)