SAXSdb — 1krv

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

GALACTOSIDE O-ACETYLTRANSFERASE

Escherichia coli

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 3	4-nitrophenyl beta-D-galactopyranoside × 3 COENZYME A × 3 water × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	THGA_ECOLI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–203； UniProt 1–203 Author chain B； PDBConstruct 1–203； UniProt 1–203 Author chain C； PDBConstruct 1–203； UniProt 1–203

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	1krv
Deposition date deposition_date	2002-01-10
Structure title title	Galactoside Acetyltransferase in Complex with CoA and PNP-beta-Gal
Keywords keywords	Left-Handed Parallel Beta Helix, 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.

1krv__assembly_1__model_1

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

Download this curve (.dat)

1krv__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1krv__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	24.92 Å
Rg (electron density)	23.53 Å
Total Rg	24.47 Å
Atom count	4959
Residues	603
Excluded volume	87564 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1krv__assembly_1__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 (4)

Entity 1 Entity 1 polymer

Description description	GALACTOSIDE O-ACETYLTRANSFERASE
Molecular weight formula_weight	22827.0 kDa
EC 编号 ec_number	2.3.1.18
Source method src_method	man
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C
Atom count atom_count	5029

MNMPMTERIRAGKLFTDMCEGLPEKRLRGKTLMYEFNHSHPSEVEKRESLIKEMFATVGENAWVEPPVYFSYGSNIHIGRNFYANFNLTIVDDYTVTIGDNVLIAPNVTLSVTGHPVHHELRKNGEMYSFPITIGNNVWIGSHVVINPGVTIGDNSVIGAGSIVTKDIPPNVVAAGVPCRVIREINDRDKHYYFKDYKVESSV

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	4-nitrophenyl beta-D-galactopyranoside
Molecular weight formula_weight	301.2 kDa
Source method src_method	man
Copy count entity_count	3

Entity 3 Entity 3 non-polymer

Description description	COENZYME A
Molecular weight formula_weight	767.5 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	70

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

Domain ID domain_id	d1krva_
Class class	b — All beta proteins
Fold Fold fold	b.81 — Single-stranded left-handed beta-helix
Superfamily Superfamily superfamily	b.81.1 — Trimeric LpxA-like enzymes
Family Family family	b.81.1.3 — Galactoside acetyltransferase-like

Domain ID domain_id	d1krvb_
Class class	b — All beta proteins
Fold Fold fold	b.81 — Single-stranded left-handed beta-helix
Superfamily Superfamily superfamily	b.81.1 — Trimeric LpxA-like enzymes
Family Family family	b.81.1.3 — Galactoside acetyltransferase-like

Domain ID domain_id	d1krvc_
Class class	b — All beta proteins
Fold Fold fold	b.81 — Single-stranded left-handed beta-helix
Superfamily Superfamily superfamily	b.81.1 — Trimeric LpxA-like enzymes
Family Family family	b.81.1.3 — Galactoside acetyltransferase-like

CATH v4.4 (3 domains)

Domain ID domain_id	1krvA00
Class class	2 — Mainly Beta
Architecture architecture	160 — 3 Solenoid
Topology topology	10 — UDP N-Acetylglucosamine Acyltransferase; domain 1
Homologous superfamily homologous superfamily	10 — Hexapeptide repeat proteins

Domain ID domain_id	1krvB00
Class class	2 — Mainly Beta
Architecture architecture	160 — 3 Solenoid
Topology topology	10 — UDP N-Acetylglucosamine Acyltransferase; domain 1
Homologous superfamily homologous superfamily	10 — Hexapeptide repeat proteins

Domain ID domain_id	1krvC00
Class class	2 — Mainly Beta
Architecture architecture	160 — 3 Solenoid
Topology topology	10 — UDP N-Acetylglucosamine Acyltransferase; domain 1
Homologous superfamily homologous superfamily	10 — Hexapeptide repeat proteins

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Unit-cell length a length_a	66.300 Å
Unit-cell length b length_b	183.800 Å
Unit-cell length c length_c	121.500 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	24

Space group space_group	C 2 2 21
Space-group number int_tables_number	20
Crystal system crystal_system	—

Resolution resolution	2.800 Å
Low-resolution limit resolution_low	31.000 Å
R factor r_factor	0.1780
R_work r_work	0.1740
R_free r_free	0.2530

Galactoside Acetyltransferase in Complex with CoA and PNP-beta-Gal

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

GALACTOSIDE O-ACETYLTRANSFERASE

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

1krv__assembly_1__model_1

1krv__assembly_1__model_1 | I(q)

1krv__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) 6 domains

SCOP 2.08 (3 domains)

CATH v4.4 (3 domains)

7. Citations (1)

Galactoside Acetyltransferase in Complex with CoA and PNP-beta-Gal

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

GALACTOSIDE O-ACETYLTRANSFERASE

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

1krv__assembly_1__model_1

1krv__assembly_1__model_1 | I(q)

1krv__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) 6 domains

SCOP 2.08 (3 domains)

CATH v4.4 (3 domains)

7. Citations (1)