SAXSdb — 2h1y

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

Malonyl coenzyme A-acyl carrier protein transacylase

Helicobacter pylori

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q56S05_HELPY
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 13–321； UniProt 1–309 Author chain B； PDBConstruct 13–321； UniProt 1–309

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	2h1y
Deposition date deposition_date	2006-05-17
Structure title title	Crystal structure of malonyl-CoA:Acyl carrier protein transacylase (MCAT) from Helicobacter pylori
Keywords keywords	FabD, MCAT, 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.

2h1y__assembly_1__model_1

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

Download this curve (.dat)

2h1y__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2h1y__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	20.02 Å
Rg (electron density)	19.01 Å
Total Rg	19.99 Å
Atom count	2414
Residues	310
Excluded volume	43430 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2h1y__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2h1y__assembly_2__model_1`	monomeric （1）	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

CATH v4.4 (4 domains)

Domain ID domain_id	2h1yA01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	366 — Malonyl-Coenzyme A Acyl Carrier Protein; domain 2
Homologous superfamily homologous superfamily	10 — Malonyl-Coenzyme A Acyl Carrier Protein, domain 2

Domain ID domain_id	2h1yA02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	250 — Malonyl-CoA ACP transacylase, ACP-binding

Domain ID domain_id	2h1yB01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	366 — Malonyl-Coenzyme A Acyl Carrier Protein; domain 2
Homologous superfamily homologous superfamily	10 — Malonyl-Coenzyme A Acyl Carrier Protein, domain 2

Domain ID domain_id	2h1yB02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	250 — Malonyl-CoA ACP transacylase, ACP-binding

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Unit-cell length a length_a	43.616 Å
Unit-cell length b length_b	76.175 Å
Unit-cell length c length_c	99.768 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	101.22 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	2.500 Å
Low-resolution limit resolution_low	36.700 Å
R factor r_factor	—
R_work r_work	0.2150
R_free r_free	0.2620

Description description	Malonyl coenzyme A-acyl carrier protein transacylase
Molecular weight formula_weight	35803.3 kDa
EC 编号 ec_number	2.3.1.39
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	4878

Crystal structure of malonyl-CoA:Acyl carrier protein transacylase (MCAT) from Helicobacter pylori

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

Malonyl coenzyme A-acyl carrier protein transacylase

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

2h1y__assembly_1__model_1

2h1y__assembly_1__model_1 | I(q)

2h1y__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 water

6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

7. Citations (1)

Source organism organism	Helicobacter pylori
NCBI taxonomy ID ncbi_taxonomy_id	102617
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	26

Crystal structure of malonyl-CoA:Acyl carrier protein transacylase (MCAT) from Helicobacter pylori

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

Malonyl coenzyme A-acyl carrier protein transacylase

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

2h1y__assembly_1__model_1

2h1y__assembly_1__model_1 | I(q)

2h1y__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 water

6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

7. Citations (1)