SAXSdb — 1z4e

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

transcriptional regulator

Bacillus halodurans

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q9KBG0_BACHD
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–153； UniProt 1–153 Author chain B； PDBConstruct 1–153； UniProt 1–153

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	1z4e
Deposition date deposition_date	2005-03-15
Structure title title	Crystal structure of transcriptional regulator from Bacillus halodurans C-125
Keywords keywords	;NYSGXRC target T2017, GNAT fold, Structural Genomics, PSI, Protein Structure Initiative, New York SGX Research Center for Structural Genomics, NYSGRC, TRANSCRIPTION REGULATOR ;; TRANSCRIPTION REGULATOR
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.

1z4e__assembly_1__model_1

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

Download this curve (.dat)

1z4e__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1z4e__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	20.55 Å
Rg (electron density)	19.50 Å
Total Rg	20.43 Å
Atom count	2416
Residues	300
Excluded volume	42847 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1z4e__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 (2)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1z4ea1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.108 — Acyl-CoA N-acyltransferases (Nat)
Superfamily Superfamily superfamily	d.108.1 — Acyl-CoA N-acyltransferases (Nat)
Family Family family	d.108.1.1 — N-acetyl transferase, NAT

Domain ID domain_id	d1z4eb_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.108 — Acyl-CoA N-acyltransferases (Nat)
Superfamily Superfamily superfamily	d.108.1 — Acyl-CoA N-acyltransferases (Nat)
Family Family family	d.108.1.1 — N-acetyl transferase, NAT

CATH v4.4 (2 domains)

Domain ID domain_id	1z4eA00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	630 — Aminopeptidase
Homologous superfamily homologous superfamily	30 — Gcn5-related N-acetyltransferase (GNAT)

Domain ID domain_id	1z4eB00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	630 — Aminopeptidase
Homologous superfamily homologous superfamily	30 — Gcn5-related N-acetyltransferase (GNAT)

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Unit-cell length a length_a	72.311 Å
Unit-cell length b length_b	80.683 Å
Unit-cell length c length_c	55.099 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 2
Space-group number int_tables_number	18
Crystal system crystal_system	—

Resolution resolution	2.000 Å
Low-resolution limit resolution_low	24.530 Å
R factor r_factor	0.2280
R_work r_work	0.2250
R_free r_free	0.2390

Description description	transcriptional regulator
Molecular weight formula_weight	17575.2 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	2562

Crystal structure of transcriptional regulator from Bacillus halodurans C-125

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

1z4e__assembly_1__model_1

1z4e__assembly_1__model_1 | I(q)

1z4e__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Source organism organism	Bacillus halodurans
NCBI taxonomy ID ncbi_taxonomy_id	272558
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	146

Crystal structure of transcriptional regulator from Bacillus halodurans C-125

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

1z4e__assembly_1__model_1

1z4e__assembly_1__model_1 | I(q)

1z4e__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)