1lfb

THE X-RAY STRUCTURE OF AN ATYPICAL HOMEODOMAIN PRESENT IN THE RAT LIVER TRANSCRIPTION FACTOR LFB1(SLASH)HNF1 AND IMPLICATIONS FOR DNA BINDING

Method: X-RAY DIFFRACTION

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

LIVER TRANSCRIPTION FACTOR (LFB1)

Rattus norvegicus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	HNF1A_MOUSE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 5–96； UniProt 195–286

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	1lfb
Deposition date deposition_date	1993-06-28
Structure title title	THE X-RAY STRUCTURE OF AN ATYPICAL HOMEODOMAIN PRESENT IN THE RAT LIVER TRANSCRIPTION FACTOR LFB1(SLASH)HNF1 AND IMPLICATIONS FOR DNA BINDING
Keywords keywords	TRANSCRIPTION REGULATION; TRANSCRIPTION REGULATION
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.

1lfb__assembly_1__model_1

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

Download this curve (.dat)

1lfb__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1lfb__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	17.72 Å
Rg (electron density)	16.56 Å
Total Rg	17.61 Å
Atom count	1282
Residues	156
Excluded volume	22280 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1lfb__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 (1)

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6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1lfba_
Class class	a — All alpha proteins
Fold Fold fold	a.4 — DNA/RNA-binding 3-helical bundle
Superfamily Superfamily superfamily	a.4.1 — Homeodomain-like
Family Family family	a.4.1.1 — Homeodomain

CATH v4.4 (1 domains)

Domain ID domain_id	1lfbA00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily	60 — Homeodomain-like

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Unit-cell length a length_a	81.030 Å
Unit-cell length b length_b	81.030 Å
Unit-cell length c length_c	85.180 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	12

Space group space_group	P 61 2 2
Space-group number int_tables_number	178
Crystal system crystal_system	—

Resolution resolution	2.800 Å
Low-resolution limit resolution_low	6.000 Å
R factor r_factor	0.2120
R_work r_work	0.2120
R_free r_free	0.3640

Description description	LIVER TRANSCRIPTION FACTOR (LFB1)
Molecular weight formula_weight	11677.2 kDa
Source method src_method	man
Copy count entity_count	1

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	641

THE X-RAY STRUCTURE OF AN ATYPICAL HOMEODOMAIN PRESENT IN THE RAT LIVER TRANSCRIPTION FACTOR LFB1(SLASH)HNF1 AND IMPLICATIONS FOR DNA BINDING

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

LIVER TRANSCRIPTION FACTOR (LFB1)

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

1lfb__assembly_1__model_1

1lfb__assembly_1__model_1 | I(q)

1lfb__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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (1)

Source organism organism	Rattus norvegicus
Common name common_name	Norway rat
NCBI taxonomy ID ncbi_taxonomy_id	10116

THE X-RAY STRUCTURE OF AN ATYPICAL HOMEODOMAIN PRESENT IN THE RAT LIVER TRANSCRIPTION FACTOR LFB1(SLASH)HNF1 AND IMPLICATIONS FOR DNA BINDING

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

LIVER TRANSCRIPTION FACTOR (LFB1)

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

1lfb__assembly_1__model_1

1lfb__assembly_1__model_1 | I(q)

1lfb__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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (1)