SAXSdb — 6b7a

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

Phosphopantetheine adenylyltransferase

Escherichia coli (strain K12)

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 6	2-methyl-1H-benzimidazol-7-ol × 6 SULFATE ION × 15 DI(HYDROXYETHYL)ETHER × 9 CHLORIDE ION × 3 PYROPHOSPHATE 2- × 3 water × 6	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	2-methyl-1H-benzimidazol-7-ol × 2 SULFATE ION × 5 DI(HYDROXYETHYL)ETHER × 3 CHLORIDE ION × 1 PYROPHOSPHATE 2- × 1 water × 2	Consistent with protein count
3	Protein homooligomer	Homooligomer	Protein 24	2-methyl-1H-benzimidazol-7-ol × 24 SULFATE ION × 60 DI(HYDROXYETHYL)ETHER × 36 CHLORIDE ION × 12 PYROPHOSPHATE 2- × 12 water × 24	Consistent with protein count
4	Protein homooligomer	Homooligomer	Protein 3	2-methyl-1H-benzimidazol-7-ol × 3 SULFATE ION × 6 DI(HYDROXYETHYL)ETHER × 6 CHLORIDE ION × 3 water × 3	Consistent with protein count
5	Protein homooligomer	Homooligomer	Protein 3	2-methyl-1H-benzimidazol-7-ol × 3 SULFATE ION × 9 DI(HYDROXYETHYL)ETHER × 3 PYROPHOSPHATE 2- × 3 water × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	COAD_ECOLI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–159； UniProt 1–159 Author chain B； PDBConstruct 1–159； UniProt 1–159

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	6b7a
Deposition date deposition_date	2017-10-03
Structure title title	Crystal structure of E.coli Phosphopantetheine Adenylyltransferase (PPAT/CoaD) in complex with 2-methyl-1H-benzo[d]imidazol-4-ol
Keywords keywords	CoaD, TRANSFERASE; TRANSFERASE
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.

6b7a__assembly_3__model_1

Assembly 3 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

6b7a__assembly_3__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

6b7a__assembly_3__model_1 | P(r) · Pending

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

Rg（Guinier）	51.87 Å
Rg (electron density)	51.02 Å
Total Rg	51.37 Å
Atom count	30780
Residues	3816
Excluded volume	546450 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`6b7a__assembly_1__model_1`	hexameric （6）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`6b7a__assembly_2__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`6b7a__assembly_3__model_1`	24-meric （24）	Success	4.1.3-1-20251215 (887e7ef)	View Download
4	1	`6b7a__assembly_4__model_1`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
5	1	`6b7a__assembly_5__model_1`	trimeric （3）	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 (7)

Entity 1 Entity 1 polymer

Description description	Phosphopantetheine adenylyltransferase
Molecular weight formula_weight	18902.7 kDa
EC 编号 ec_number	2.7.7.3
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	3005

MQKRAIYPGTFDPITNGHIDIVTRATQMFDHVILAIAASPSKKPMFTLEERVALAQQATAHLGNVEVVGFSDLMANFARNQHATVLIRGLRAVADFEYEMQLAHMNRHLMPELESVFLMPSKEWSFISSSLVKEVARHQGDVTHFLPENVHQALMAKLAVDHHHHHH

Source Source

Source organism organism	Escherichia coli (strain K12)
NCBI taxonomy ID ncbi_taxonomy_id	83333
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	2-methyl-1H-benzimidazol-7-ol
Molecular weight formula_weight	148.2 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	5

Entity 4 Entity 4 non-polymer

Description description	DI(HYDROXYETHYL)ETHER
Molecular weight formula_weight	106.1 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 5 Entity 5 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 6 Entity 6 non-polymer

Description description	PYROPHOSPHATE 2-
Molecular weight formula_weight	176.0 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 7 Entity 7 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	367

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d6b7aa1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.26 — Adenine nucleotide alpha hydrolase-like
Superfamily Superfamily superfamily	c.26.1 — Nucleotidylyl transferase
Family Family family	c.26.1.3 — Adenylyltransferase

Domain ID domain_id	d6b7aa2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d6b7ab1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.26 — Adenine nucleotide alpha hydrolase-like
Superfamily Superfamily superfamily	c.26.1 — Nucleotidylyl transferase
Family Family family	c.26.1.3 — Adenylyltransferase

Domain ID domain_id	d6b7ab2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

CATH v4.4 (2 domains)

Domain ID domain_id	6b7aA00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	620 — HUPs

Domain ID domain_id	6b7aB00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	620 — HUPs

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Unit-cell length a length_a	134.600 Å
Unit-cell length b length_b	134.600 Å
Unit-cell length c length_c	134.600 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	48

Space group space_group	I 2 3
Space-group number int_tables_number	197
Crystal system crystal_system	—

Resolution resolution	1.991 Å
Low-resolution limit resolution_low	28.697 Å
R factor r_factor	0.1752
R_work r_work	0.1740
R_free r_free	0.1986

Crystal structure of E.coli Phosphopantetheine Adenylyltransferase (PPAT/CoaD) in complex with 2-methyl-1H-benzo[d]imidazol-4-ol

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

Phosphopantetheine adenylyltransferase

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

6b7a__assembly_3__model_1

6b7a__assembly_3__model_1 | I(q)

6b7a__assembly_3__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 (7)

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 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Crystal structure of E.coli Phosphopantetheine Adenylyltransferase (PPAT/CoaD) in complex with 2-methyl-1H-benzo[d]imidazol-4-ol

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

Phosphopantetheine adenylyltransferase

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

6b7a__assembly_3__model_1

6b7a__assembly_3__model_1 | I(q)

6b7a__assembly_3__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 (7)

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 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

CATH v4.4 (2 domains)

7. Citations (1)