SAXSdb — 6yxa

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

GTP pyrophosphokinase

Bacillus subtilis subsp. subtilis str. 168

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	MANGANESE (II) ION × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RELA_BACSU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–556； UniProt 1–556

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	6yxa
Deposition date deposition_date	2020-04-30
Structure title title	Structure of the bifunctional Rel enzyme from B. subtilis
Keywords keywords	bifunctional (p)ppGpp synthease/hydrolase, stringent response, ribosome interacting, 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.

6yxa__assembly_1__model_1

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

Download this curve (.dat)

6yxa__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

6yxa__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	37.91 Å
Rg (electron density)	37.67 Å
Total Rg	38.02 Å
Atom count	8738
Residues	1072
Excluded volume	156130 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`6yxa__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)

Entity 1 Entity 1 polymer

Description description	GTP pyrophosphokinase
Molecular weight formula_weight	65279.6 kDa
EC 编号 ec_number	2.7.6.5
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	4369

MANEQVLTAEQVIDKARSYLSDEHIAFVEKAYLYAEDAHREQYRKSGEPYIIHPIQVAGILVDLEMDPSTIAGGFLHDVVEDTDVTLDDLKEAFSEEVAMLVDGVTKLGKIKYKSQEEQQAENHRKMFVAMAQDIRVILIKLADRLHNMRTLKHLPQEKQRRISNETLEIFAPLAHRLGISKIKWELEDTALRYLNPQQYYRIVNLMKKKRAERELYVDEVVNEVKKRVEEVNIKADFSGRPKHIYSIYRKMVLQNKQFNEIYDLLAVRILVNSIKDCYAVLGIIHTCWKPMPGRFKDYIAMPKPNMYQSLHTTVIGPKGDPLEVQIRTFEMHEIAEYGVAAHWAYKEGKAANEGATFEKKLSWFREILEFQNESTDAEEFMESLKIDLFSDMVYVFTPKGDVIELPSGSVPIDFSYRIHSEIGNKTIGAKVNGKMVTLDHKLRTGDIVEILTSKHSYGPSQDWVKLAQTSQAKHKIRQFFKKQRREENVEKGRELVEKEIKNLDFELKDVLTPENIQKVADKFNFSNEEDMYAAVGYNGITALQVANRLTEKERKHHHHHH

Source Source

Source organism organism	Bacillus subtilis subsp. subtilis str. 168
NCBI taxonomy ID ncbi_taxonomy_id	224308
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 non-polymer

Description description	MANGANESE (II) ION
Molecular weight formula_weight	54.9 kDa
Source method src_method	syn
Copy count entity_count	1

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6. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

Domain ID domain_id	6yxaA01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	3210 — Hypothetical protein af1432
Homologous superfamily homologous superfamily	10 — Hypothetical protein af1432

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Unit-cell length a length_a	130.152 Å
Unit-cell length b length_b	130.152 Å
Unit-cell length c length_c	157.621 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 43 21 2
Space-group number int_tables_number	96
Crystal system crystal_system	—

Resolution resolution	3.950 Å
Low-resolution limit resolution_low	48.720 Å
R factor r_factor	0.2655
R_work r_work	0.2635
R_free r_free	0.2839

Structure of the bifunctional Rel enzyme from B. subtilis

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

GTP pyrophosphokinase

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

6yxa__assembly_1__model_1

6yxa__assembly_1__model_1 | I(q)

6yxa__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

6. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

7. Citations (1)

Structure of the bifunctional Rel enzyme from B. subtilis

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

GTP pyrophosphokinase

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

6yxa__assembly_1__model_1

6yxa__assembly_1__model_1 | I(q)

6yxa__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

6. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

7. Citations (1)