SAXSdb — 3bhq

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

Transcriptional regulator

Mesorhizobium loti

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	CHLORIDE ION × 3 1,2-ETHANEDIOL × 14 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q98D70_RHILO
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–211； UniProt 1–210 Author chain B； PDBConstruct 2–211； UniProt 1–210

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	3bhq
Deposition date deposition_date	2007-11-28
Structure title title	CRYSTAL STRUCTURE OF A PUTATIVE TETR-FAMILY TRANSCRIPTIONAL REGULATOR (MLR_4833) FROM MESORHIZOBIUM LOTI MAFF303099 AT 1.54 A RESOLUTION
Keywords keywords	;PUTATIVE TETR-FAMILY TRANSCRIPTIONAL REGULATOR, BACTERIAL REGULATORY PROTEINS, STRUCTURAL GENOMICS, JOINT CENTER FOR STRUCTURAL GENOMICS, JCSG, PROTEIN STRUCTURE INITIATIVE, PSI-2, DNA-BINDING, TRANSCRIPTION REGULATION, TRANSCRIPTION ;; TRANSCRIPTION
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.

3bhq__assembly_1__model_1

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

Download this curve (.dat)

3bhq__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3bhq__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	23.76 Å
Rg (electron density)	22.90 Å
Total Rg	23.59 Å
Atom count	3189
Residues	388
Excluded volume	57348 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3bhq__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 (4)

Entity 1 Entity 1 polymer

Description description	Transcriptional regulator
Molecular weight formula_weight	23865.0 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	3817

GMKIDGETRSARKDREIIQAATAAFISKGYDGTSMEEIATKAGASKQTVYKHFTDKETLFGEVVLSTASQVNDIIESVTTLLSEAIFMEGGLQQLARRLIAVLMDEELLKLRRLIIANADRMPQLGRAWYEKGFERMLASTASCFQKLTNRGLIQTGDPYLAASHLFGMLLWIPMNEAMFTGSNRRSKAELERHADASVEAFLAVYGVQPK

Source Source

Source organism organism	Mesorhizobium loti
NCBI taxonomy ID ncbi_taxonomy_id	266835
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 3 Entity 3 non-polymer

Description description	1,2-ETHANEDIOL
Molecular weight formula_weight	62.1 kDa
Source method src_method	syn
Copy count entity_count	14

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	435

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6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	3bhqA00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	357 — Tetracycline Repressor; domain 2
Homologous superfamily homologous superfamily	10 — Tetracycline Repressor, domain 2

Domain ID domain_id	3bhqB00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	357 — Tetracycline Repressor; domain 2
Homologous superfamily homologous superfamily	10 — Tetracycline Repressor, domain 2

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Unit-cell length a length_a	54.534 Å
Unit-cell length b length_b	64.221 Å
Unit-cell length c length_c	142.613 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	1.540 Å
Low-resolution limit resolution_low	29.841 Å
R factor r_factor	0.1740
R_work r_work	0.1730
R_free r_free	0.1940

CRYSTAL STRUCTURE OF A PUTATIVE TETR-FAMILY TRANSCRIPTIONAL REGULATOR (MLR_4833) FROM MESORHIZOBIUM LOTI MAFF303099 AT 1.54 A RESOLUTION

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

Transcriptional regulator

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

3bhq__assembly_1__model_1

3bhq__assembly_1__model_1 | I(q)

3bhq__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 (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) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)

CRYSTAL STRUCTURE OF A PUTATIVE TETR-FAMILY TRANSCRIPTIONAL REGULATOR (MLR_4833) FROM MESORHIZOBIUM LOTI MAFF303099 AT 1.54 A RESOLUTION

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

Transcriptional regulator

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

3bhq__assembly_1__model_1

3bhq__assembly_1__model_1 | I(q)

3bhq__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 (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) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)