SAXSdb — 1pg5

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

Aspartate carbamoyltransferase

Sulfolobus acidocaldarius

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 12	Aspartate carbamoyltransferase regulatory chain × 6 （P74766） ZINC ION × 6 water × 12	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PYRB_SULAC
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–299； UniProt 1–299

Aspartate carbamoyltransferase regulatory chain

Sulfolobus acidocaldarius

UniProt P74766

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 12	Aspartate carbamoyltransferase × 6 （Q55338） ZINC ION × 6 water × 12	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PYRI_SULAC
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 5–168； UniProt 1–164

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	1pg5
Deposition date deposition_date	2003-05-27
Structure title title	CRYSTAL STRUCTURE OF THE UNLIGATED (T-STATE) ASPARTATE TRANSCARBAMOYLASE FROM THE EXTREMELY THERMOPHILIC ARCHAEON SULFOLOBUS ACIDOCALDARIUS
Keywords keywords	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.

1pg5__assembly_1__model_1

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

Download this curve (.dat)

1pg5__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1pg5__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	44.96 Å
Rg (electron density)	44.48 Å
Total Rg	44.99 Å
Atom count	21000
Residues	2640
Excluded volume	379880 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1pg5__assembly_1__model_1`	dodecameric （12）	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	Aspartate carbamoyltransferase
Molecular weight formula_weight	34201.2 kDa
EC 编号 ec_number	2.1.3.2
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	3593

LKHIISAYNFSRDELEDIFALTDKYSKNLNDTRKILSGKTISIAFFEPSTRTYLSFQKAIINLGGDVIGFSGEESTSVAKGENLADTIRMLNNYSDGIVMRHKYDGASRFASEISDIPVINAGDGKHEHPTQAVIDIYTINKHFNTIDGLVFALLGDLKYARTVNSLLRILTRFRPKLVYLISPQLLRARKEILDELNYPVKEVENPFEVINEVDVLYVTRIQKERFVDEMEYEKIKGSYIVSLDLANKMKKDSIILHPLPRVNEIDRKVDKTTKAKYFEQASYGVPVRMSILTKIYGE

Source Source

Source organism organism	Sulfolobus acidocaldarius
NCBI taxonomy ID ncbi_taxonomy_id	2285
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	Aspartate carbamoyltransferase regulatory chain
Molecular weight formula_weight	18845.2 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

MEFMMEIQGNRKELMVSKIKNGTVIDHIPAGRAFAVLNVLGIKGHEGFRIALVINVDSKKMGKKDIVKIEDKEISDTEANLITLIAPTATINIVREYEVVKKTKLEVPKVVKGILKCPNPYCITSNDVEAIPTFKTLTEKPLKMRCEYCETIIDENEIMSQILGANNK

Source Source

Source organism organism	Sulfolobus acidocaldarius
NCBI taxonomy ID ncbi_taxonomy_id	2285
Host organism host_organism	Escherichia coli

Entity 3 Entity 3 non-polymer

Description description	ZINC ION
Molecular weight formula_weight	65.4 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	93

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1pg5a1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.78 — ATC-like
Superfamily Superfamily superfamily	c.78.1 — Aspartate/ornithine carbamoyltransferase
Family Family family	c.78.1.1 — Aspartate/ornithine carbamoyltransferase

Domain ID domain_id	d1pg5a2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.78 — ATC-like
Superfamily Superfamily superfamily	c.78.1 — Aspartate/ornithine carbamoyltransferase
Family Family family	c.78.1.1 — Aspartate/ornithine carbamoyltransferase

Domain ID domain_id	d1pg5b1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.58 — Ferredoxin-like
Superfamily Superfamily superfamily	d.58.2 — Aspartate carbamoyltransferase, Regulatory-chain, N-terminal domain
Family Family family	d.58.2.1 — Aspartate carbamoyltransferase, Regulatory-chain, N-terminal domain

Domain ID domain_id	d1pg5b2
Class class	g — Small proteins
Fold Fold fold	g.41 — Rubredoxin-like
Superfamily Superfamily superfamily	g.41.7 — Aspartate carbamoyltransferase, Regulatory-chain, C-terminal domain
Family Family family	g.41.7.1 — Aspartate carbamoyltransferase, Regulatory-chain, C-terminal domain

CATH v4.4 (4 domains)

Domain ID domain_id	1pg5A01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1370 — Aspartate/ornithine carbamoyltransferase

Domain ID domain_id	1pg5A02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1370 — Aspartate/ornithine carbamoyltransferase

Domain ID domain_id	1pg5B01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	140 — Aspartate carbamoyltransferase regulatory subunit, N-terminal domain

Domain ID domain_id	1pg5B02
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	30 — SH3 type barrels.
Homologous superfamily homologous superfamily	20 — Aspartate carbamoyltransferase regulatory subunit, C-terminal domain

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Unit-cell length a length_a	132.853 Å
Unit-cell length b length_b	132.853 Å
Unit-cell length c length_c	140.279 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	12

Space group space_group	P 63 2 2
Space-group number int_tables_number	182
Crystal system crystal_system	—

Resolution resolution	2.600 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	0.1952
R_work r_work	0.1929
R_free r_free	0.2386

CRYSTAL STRUCTURE OF THE UNLIGATED (T-STATE) ASPARTATE TRANSCARBAMOYLASE FROM THE EXTREMELY THERMOPHILIC ARCHAEON SULFOLOBUS ACIDOCALDARIUS

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

Aspartate carbamoyltransferase

State in the Current Structure

Other States of the Same Protein in the Database

Aspartate carbamoyltransferase regulatory chain

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

1pg5__assembly_1__model_1

1pg5__assembly_1__model_1 | I(q)

1pg5__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 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)

CRYSTAL STRUCTURE OF THE UNLIGATED (T-STATE) ASPARTATE TRANSCARBAMOYLASE FROM THE EXTREMELY THERMOPHILIC ARCHAEON SULFOLOBUS ACIDOCALDARIUS

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

Aspartate carbamoyltransferase

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Aspartate carbamoyltransferase regulatory chain

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

1pg5__assembly_1__model_1

1pg5__assembly_1__model_1 | I(q)

1pg5__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 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)