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1lq1

DNA Complexed Structure of the Key Transcription Factor Initiating Development in Sporulation Bacteria

Method: X-RAY DIFFRACTION
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1. Protein Identity and Related Structures Protein Identity & Related Structures

Stage 0 sporulation protein A

Bacillus subtilis

UniProt P06534

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Homooligomer Protein 2 DNA 2 5'-D(*TP*TP*CP*GP*TP*GP*TP*CP*GP*AP*AP*TP*TP*TP*TP*G)-3' × 1 5'-D(*AP*CP*AP*AP*AP*AP*TP*TP*CP*GP*AP*CP*AP*CP*GP*A)-3' × 1 water × 4 Consistent with all polymers
2 Protein–DNA Homooligomer Protein 2 DNA 2 5'-D(*TP*TP*CP*GP*TP*GP*TP*CP*GP*AP*AP*TP*TP*TP*TP*G)-3' × 1 5'-D(*AP*CP*AP*AP*AP*AP*TP*TP*CP*GP*AP*CP*AP*CP*GP*A)-3' × 1 water × 4 Consistent with all polymers

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1lq1 1lq1

2 assemblies

View Construct and Data Evidence
UniProt name SP0A_BACSU
Isoform —
PDB entities 3
Chains and sequence ranges Author chain A； PDBConstruct 1–120； UniProt 148–267 Author chain B； PDBConstruct 1–120； UniProt 148–267 Author chain C； PDBConstruct 1–120； UniProt 148–267 Author chain D； PDBConstruct 1–120； UniProt 148–267

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_id1lq1
Deposition date deposition_date2002-05-08
Structure title titleDNA Complexed Structure of the Key Transcription Factor Initiating Development in Sporulation Bacteria
Keywords keywordsSpo0A, transcriptional activation and repression, 0A box, DNA complexed structure, TRANSCRIPTION-DNA COMPLEX; TRANSCRIPTION/DNA
Experimental Method methodX-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.

1lq1__assembly_1__model_1

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

Download this curve (.dat)

1lq1__assembly_1__model_1 | I(q)

10-2 10-1 105 106 107 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

1lq1__assembly_1__model_1 | P(r) · Pending

The new assembly/model P(r) has not been calculated yet This placeholder does not display legacy data r (Angstrom) P(r)
P(r) will be calculated and displayed separately for the same assembly/model.
Rg（Guinier）21.41 Å
Rg (electron density)20.36 Å
Total Rg21.25 Å
Atom count2365
Residues251
Excluded volume40442 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1lq1__assembly_1__model_1 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 1lq1__assembly_2__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 (4)

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd1lq1a_
Class classa — All alpha proteins
Fold Fold folda.4 — DNA/RNA-binding 3-helical bundle
Superfamily Superfamily superfamilya.4.6 — C-terminal effector domain of the bipartite response regulators
Family Family familya.4.6.3 — Spo0A
Domain ID domain_idd1lq1b_
Class classa — All alpha proteins
Fold Fold folda.4 — DNA/RNA-binding 3-helical bundle
Superfamily Superfamily superfamilya.4.6 — C-terminal effector domain of the bipartite response regulators
Family Family familya.4.6.3 — Spo0A
Domain ID domain_idd1lq1c_
Class classa — All alpha proteins
Fold Fold folda.4 — DNA/RNA-binding 3-helical bundle
Superfamily Superfamily superfamilya.4.6 — C-terminal effector domain of the bipartite response regulators
Family Family familya.4.6.3 — Spo0A
Domain ID domain_idd1lq1d_
Class classa — All alpha proteins
Fold Fold folda.4 — DNA/RNA-binding 3-helical bundle
Superfamily Superfamily superfamilya.4.6 — C-terminal effector domain of the bipartite response regulators
Family Family familya.4.6.3 — Spo0A

CATH v4.4 (4 domains)

Domain ID domain_id1lq1A00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily10 — Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain
Domain ID domain_id1lq1B00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily10 — Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain
Domain ID domain_id1lq1C00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily10 — Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain
Domain ID domain_id1lq1D00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily10 — Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain
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7. Citations (1)