SAXSdb — 1iuq

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

Glycerol-3-Phosphate Acyltransferase

Cucurbita moschata

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	SULFATE ION × 5 GLYCEROL × 6 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PLSB_CUCMO
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 3–367； UniProt 32–396

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	1iuq
Deposition date deposition_date	2002-03-06
Structure title title	The 1.55 A Crystal Structure of Glycerol-3-Phosphate Acyltransferase
Keywords keywords	OPEN TWISTED ALPHA/BETA, FOUR HELIX BUNDLE, 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.

1iuq__assembly_1__model_1

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

Download this curve (.dat)

1iuq__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1iuq__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	22.01 Å
Rg (electron density)	20.88 Å
Total Rg	21.77 Å
Atom count	2857
Residues	350
Excluded volume	50894 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1iuq__assembly_1__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 (4)

Entity 1 Entity 1 polymer

Description description	Glycerol-3-Phosphate Acyltransferase
Molecular weight formula_weight	41165.6 kDa
EC 编号 ec_number	2.3.1.15
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	3247

ASHSRKFLDVRSEEELLSCIKKETEAGKLPPNVAAGMEELYQNYRNAVIESGNPKADEIVLSNMTVALDRILLDVEDPFVFSSHHKAIREPFDYYIFGQNYIRPLIDFGNSFVGNLSLFKDIEEKLQQGHNVVLISNHQTEADPAIISLLLEKTNPYIAENTIFVAGDRVLADPLCKPFSIGRNLICVYSKKHMFDIPELTETKRKANTRSLKEMALLLRGGSQLIWIAPSGGRDRPDPSTGEWYPAPFDASSVDNMRRLIQHSDVPGHLFPLALLCHDIMPPPSQVEIEIGEKRVIAFNGAGLSVAPEISFEEIAATHKNPEEVREAYSKALFDSVAMQYNVLKTAISGKQGLGASTADVSLSQPW

Source Source

Source organism organism	Cucurbita moschata
Common name common_name	crookneck pumpkin
NCBI taxonomy ID ncbi_taxonomy_id	3662
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

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

Entity 3 Entity 3 non-polymer

Description description	GLYCEROL
Molecular weight formula_weight	92.1 kDa
Source method src_method	syn
Copy count entity_count	6

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	390

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1iuqa1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.112 — Glycerol-3-phosphate (1)-acyltransferase
Superfamily Superfamily superfamily	c.112.1 — Glycerol-3-phosphate (1)-acyltransferase
Family Family family	c.112.1.1 — Glycerol-3-phosphate (1)-acyltransferase

Domain ID domain_id	d1iuqa2
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	1iuqA01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	1200 — Non-ribosomal Peptide Synthetase Peptidyl Carrier Protein; Chain A
Homologous superfamily homologous superfamily	50 — Glycerol-3-phosphate acyltransferase, alpha helical bundle, N-terminal

Domain ID domain_id	1iuqA02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	1130 — Glycerol-3-phosphate (1)-acyltransferase
Homologous superfamily homologous superfamily	10 — Glycerol-3-phosphate (1)-acyltransferase

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Unit-cell length a length_a	58.138 Å
Unit-cell length b length_b	63.604 Å
Unit-cell length c length_c	115.862 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	4

Space group space_group	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	1.550 Å
Low-resolution limit resolution_low	15.000 Å
R factor r_factor	0.2022
R_work r_work	0.2012
R_free r_free	0.2191

The 1.55 A Crystal Structure of Glycerol-3-Phosphate Acyltransferase

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

Glycerol-3-Phosphate Acyltransferase

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

1iuq__assembly_1__model_1

1iuq__assembly_1__model_1 | I(q)

1iuq__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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

The 1.55 A Crystal Structure of Glycerol-3-Phosphate Acyltransferase

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

Glycerol-3-Phosphate Acyltransferase

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

1iuq__assembly_1__model_1

1iuq__assembly_1__model_1 | I(q)

1iuq__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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)