SAXSdb — 9sfa

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

Putative regulatory protein

Bdellovibrio bacteriovorus HD100

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	Q6MJA2_BDEBA
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–380； UniProt 1–380 Author chain B； PDBConstruct 1–380； UniProt 1–380

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	9sfa
Deposition date deposition_date	2025-08-19
Structure title title	Cyclic nucleotide binding transcription factor Bd2879 - apo form
Keywords keywords	Cyclic nucleotide binding, Transcription factor, Dimer, Complex, Helix-turn-helix, SIGNALING PROTEIN; SIGNALING 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.

9sfa__assembly_1__model_1

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

Download this curve (.dat)

9sfa__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

9sfa__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	31.36 Å
Rg (electron density)	30.87 Å
Total Rg	31.46 Å
Atom count	5314
Residues	667
Excluded volume	95451 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`9sfa__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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Unit-cell length a length_a	86.912 Å
Unit-cell length b length_b	100.016 Å
Unit-cell length c length_c	198.918 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	C 2 2 21
Space-group number int_tables_number	20
Crystal system crystal_system	—

Resolution resolution	2.880 Å
Low-resolution limit resolution_low	48.500 Å
R factor r_factor	0.2388
R_work r_work	0.2370
R_free r_free	0.2731

Description description	Putative regulatory protein
Molecular weight formula_weight	43589.2 kDa
Source method src_method	man
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	5314

Cyclic nucleotide binding transcription factor Bd2879 - apo form

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

Putative regulatory protein

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

9sfa__assembly_1__model_1

9sfa__assembly_1__model_1 | I(q)

9sfa__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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

7. Citations (1)

Source organism organism	Bdellovibrio bacteriovorus HD100
NCBI taxonomy ID ncbi_taxonomy_id	264462
Host organism host_organism	Escherichia coli BL21(DE3)

Cyclic nucleotide binding transcription factor Bd2879 - apo form

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

Putative regulatory protein

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

9sfa__assembly_1__model_1

9sfa__assembly_1__model_1 | I(q)

9sfa__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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

7. Citations (1)