1c3o

CRYSTAL STRUCTURE OF THE CARBAMOYL PHOSPHATE SYNTHETASE: SMALL SUBUNIT MUTANT C269S WITH BOUND GLUTAMINE

Method: X-RAY DIFFRACTION

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

CARBAMOYL PHOSPHATE SYNTHETASE: LARGE SUBUNIT

Escherichia coli

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 8	CARBAMOYL PHOSPHATE SYNTHETASE: SMALL SUBUNIT × 4 （P00907） MANGANESE (II) ION × 12 POTASSIUM ION × 32 CHLORIDE ION × 16 PHOSPHATE ION × 5 ADENOSINE-5'-DIPHOSPHATE × 8 L-ornithine × 4 GLUTAMINE × 8 TETRAETHYLAMMONIUM ION × 4 water × 8	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CARB_ECOLI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–1073； UniProt 1–1073 Author chain C； PDBConstruct 1–1073； UniProt 1–1073 Author chain E； PDBConstruct 1–1073； UniProt 1–1073 Author chain G； PDBConstruct 1–1073； UniProt 1–1073

CARBAMOYL PHOSPHATE SYNTHETASE: SMALL SUBUNIT

Escherichia coli

UniProt P00907

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 8	CARBAMOYL PHOSPHATE SYNTHETASE: LARGE SUBUNIT × 4 （P00968） MANGANESE (II) ION × 12 POTASSIUM ION × 32 CHLORIDE ION × 16 PHOSPHATE ION × 5 ADENOSINE-5'-DIPHOSPHATE × 8 L-ornithine × 4 GLUTAMINE × 8 TETRAETHYLAMMONIUM ION × 4 water × 8	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CARA_ECOLI
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–382； UniProt 1–382 Author chain D； PDBConstruct 1–382； UniProt 1–382 Author chain F； PDBConstruct 1–382； UniProt 1–382 Author chain H； PDBConstruct 1–382； UniProt 1–382

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	1c3o
Deposition date deposition_date	1999-07-28
Structure title title	CRYSTAL STRUCTURE OF THE CARBAMOYL PHOSPHATE SYNTHETASE: SMALL SUBUNIT MUTANT C269S WITH BOUND GLUTAMINE
Keywords keywords	AMIDOTRANSFERASE, MICHAELIS COMPLEX, ATP-GRASP, LIGASE; LIGASE
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.

1c3o__assembly_1__model_1

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

Download this curve (.dat)

1c3o__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1c3o__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	72.27 Å
Rg (electron density)	72.33 Å
Total Rg	72.25 Å
Atom count	44673
Residues	5748
Excluded volume	796150 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1c3o__assembly_1__model_1`	octameric （8）	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 (11)

Entity 1 Entity 1 polymer

Description description	CARBAMOYL PHOSPHATE SYNTHETASE: LARGE SUBUNIT
Molecular weight formula_weight	117981.8 kDa
EC 编号 ec_number	6.3.5.5
Source method src_method	man
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,C,E,G
Atom count atom_count	48477

MPKRTDIKSILILGAGPIVIGQACEFDYSGAQACKALREEGYRVILVNSNPATIMTDPEMADATYIEPIHWEVVRKIIEKERPDAVLPTMGGQTALNCALELERQGVLEEFGVTMIGATADAIDKAEDRRRFDVAMKKIGLETARSGIAHTMEEALAVAADVGFPCIIRPSFTMGGSGGGIAYNREEFEEICARGLDLSPTKELLIDESLIGWKEYEMEVVRDKNDNCIIVCSIENFDAMGIHTGDSITVAPAQTLTDKEYQIMRNASMAVLREIGVETGGSNVQFAVNPKNGRLIVIEMNPRVSRSSALASKATGFPIAKVAAKLAVGYTLDELMNDITGGRTPASFEPSIDYVVTKIPRFNFEKFAGANDRLTTQMKSVGEVMAIGRTQQESLQKALRGLEVGATGFDPKVSLDDPEALTKIRRELKDAGADRIWYIADAFRAGLSVDGVFNLTNIDRWFLVQIEELVRLEEKVAEVGITGLNADFLRQLKRKGFADARLAKLAGVREAEIRKLRDQYDLHPVYKRVDTCAAEFATDTAYMYSTYEEECEANPSTDREKIMVLGGGPNRIGQGIEFDYCCVHASLALREDGYETIMVNCNPETVSTDYDTSDRLYFEPVTLEDVLEIVRIEKPKGVIVQYGGQTPLKLARALEAAGVPVIGTSPDAIDRAEDRERFQHAVERLKLKQPANATVTAIEMAVEKAKEIGYPLVVRPSYVLGGRAMEIVYDEADLRRYFQTAVSVSNDAPVLLDHFLDDAVEVDVDAICDGEMVLIGGIMEHIEQAGVHSGDSACSLPAYTLSQEIQDVMRQQVQKLAFELQVRGLMNVQFAVKNNEVYLIEVNPRAARTVPFVSKATGVPLAKVAARVMAGKSLAEQGVTKEVIPPYYSVKEVVLPFNKFPGVDPLLGPEMRSTGEVMGVGRTFAEAFAKAQLGSNSTMKKHGRALLSVREGDKERVVDLAAKLLKQGFELDATHGTAIVLGEAGINPRLVNKVHEGRPHIQDRIKNGEYTYIINTTSGRRAIEDSRVIRRSALQYKVHYDTTLNGGFATAMALNADATEKVISVQEMHAQIK

Source Source

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

Entity 2 Entity 2 polymer

Description description	CARBAMOYL PHOSPHATE SYNTHETASE: SMALL SUBUNIT
Molecular weight formula_weight	41465.8 kDa
EC 编号 ec_number	6.3.5.5
Mutation mutation	C269S
Source method src_method	man
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B,D,F,H

MIKSALLVLEDGTQFHGRAIGATGSAVGEVVFNTSMTGYQEILTDPSYSRQIVTLTYPHIGNVGTNDADEESSQVHAQGLVIRDLPLIASNFRNTEDLSSYLKRHNIVAIADIDTRKLTRLLREKGAQNGCIIAGDNPDAALALEKARAFPGLNGMDLAKEVTTAEAYSWTQGSWTLTGGLPEAKKEDELPFHVVAYDFGAKRNILRMLVDRGCRLTIVPAQTSAEDVLKMNPDGIFLSNGPGDPAPCDYAITAIQKFLETDIPVFGISLGHQLLALASGAKTVKMKFGHHGGNHPVKDVEKNVVMITAQNHGFAVDEATLPANLRVTHKSLFDGTLQGIHRTDKPAFSFQGHPEASPGPHDAAPLFDHFIELIEQYRKTAK

Source Source

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

Entity 3 Entity 3 non-polymer

Description description	MANGANESE (II) ION
Molecular weight formula_weight	54.9 kDa
Source method src_method	syn
Copy count entity_count	12

Entity 4 Entity 4 non-polymer

Description description	POTASSIUM ION
Molecular weight formula_weight	39.1 kDa
Source method src_method	syn
Copy count entity_count	32

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	16

Entity 6 Entity 6 non-polymer

Description description	PHOSPHATE ION
Molecular weight formula_weight	95.0 kDa
Source method src_method	syn
Copy count entity_count	5

Entity 7 Entity 7 non-polymer

Description description	ADENOSINE-5'-DIPHOSPHATE
Molecular weight formula_weight	427.2 kDa
Source method src_method	syn
Copy count entity_count	8

Entity 8 Entity 8 non-polymer

Description description	L-ornithine
Molecular weight formula_weight	132.2 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 9 Entity 9 non-polymer

Description description	GLUTAMINE
Molecular weight formula_weight	146.1 kDa
Source method src_method	syn
Copy count entity_count	8

Entity 10 Entity 10 non-polymer

Description description	TETRAETHYLAMMONIUM ION
Molecular weight formula_weight	130.3 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 11 Entity 11 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	3666

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6. Fold Classification (SCOP + CATH) 72 domains

SCOP 2.08 (32 domains)

Domain ID domain_id	d1c3oa1
Class class	a — All alpha proteins
Fold Fold fold	a.92 — Carbamoyl phosphate synthetase, large subunit connection domain
Superfamily Superfamily superfamily	a.92.1 — Carbamoyl phosphate synthetase, large subunit connection domain
Family Family family	a.92.1.1 — Carbamoyl phosphate synthetase, large subunit connection domain

Domain ID domain_id	d1c3oa2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.24 — Methylglyoxal synthase-like
Superfamily Superfamily superfamily	c.24.1 — Methylglyoxal synthase-like
Family Family family	c.24.1.1 — Carbamoyl phosphate synthetase, large subunit allosteric, C-terminal domain

Domain ID domain_id	d1c3oa3
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.30 — PreATP-grasp domain
Superfamily Superfamily superfamily	c.30.1 — PreATP-grasp domain
Family Family family	c.30.1.1 — BC N-terminal domain-like

Domain ID domain_id	d1c3oa4
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.30 — PreATP-grasp domain
Superfamily Superfamily superfamily	c.30.1 — PreATP-grasp domain
Family Family family	c.30.1.1 — BC N-terminal domain-like

Domain ID domain_id	d1c3oa5
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.142 — ATP-grasp
Superfamily Superfamily superfamily	d.142.1 — Glutathione synthetase ATP-binding domain-like
Family Family family	d.142.1.2 — BC ATP-binding domain-like

Domain ID domain_id	d1c3oa6
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.142 — ATP-grasp
Superfamily Superfamily superfamily	d.142.1 — Glutathione synthetase ATP-binding domain-like
Family Family family	d.142.1.2 — BC ATP-binding domain-like

Domain ID domain_id	d1c3ob1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.8 — The 'swivelling' beta/beta/alpha domain
Superfamily Superfamily superfamily	c.8.3 — Carbamoyl phosphate synthetase, small subunit N-terminal domain
Family Family family	c.8.3.1 — Carbamoyl phosphate synthetase, small subunit N-terminal domain

Domain ID domain_id	d1c3ob2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.23 — Flavodoxin-like
Superfamily Superfamily superfamily	c.23.16 — Class I glutamine amidotransferase-like
Family Family family	c.23.16.1 — Class I glutamine amidotransferases (GAT)

Domain ID domain_id	d1c3oc1
Class class	a — All alpha proteins
Fold Fold fold	a.92 — Carbamoyl phosphate synthetase, large subunit connection domain
Superfamily Superfamily superfamily	a.92.1 — Carbamoyl phosphate synthetase, large subunit connection domain
Family Family family	a.92.1.1 — Carbamoyl phosphate synthetase, large subunit connection domain

Domain ID domain_id	d1c3oc2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.24 — Methylglyoxal synthase-like
Superfamily Superfamily superfamily	c.24.1 — Methylglyoxal synthase-like
Family Family family	c.24.1.1 — Carbamoyl phosphate synthetase, large subunit allosteric, C-terminal domain

Domain ID domain_id	d1c3oc3
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.30 — PreATP-grasp domain
Superfamily Superfamily superfamily	c.30.1 — PreATP-grasp domain
Family Family family	c.30.1.1 — BC N-terminal domain-like

Domain ID domain_id	d1c3oc4
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.30 — PreATP-grasp domain
Superfamily Superfamily superfamily	c.30.1 — PreATP-grasp domain
Family Family family	c.30.1.1 — BC N-terminal domain-like

Domain ID domain_id	d1c3oc5
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.142 — ATP-grasp
Superfamily Superfamily superfamily	d.142.1 — Glutathione synthetase ATP-binding domain-like
Family Family family	d.142.1.2 — BC ATP-binding domain-like

Domain ID domain_id	d1c3oc6
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.142 — ATP-grasp
Superfamily Superfamily superfamily	d.142.1 — Glutathione synthetase ATP-binding domain-like
Family Family family	d.142.1.2 — BC ATP-binding domain-like

Domain ID domain_id	d1c3od1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.8 — The 'swivelling' beta/beta/alpha domain
Superfamily Superfamily superfamily	c.8.3 — Carbamoyl phosphate synthetase, small subunit N-terminal domain
Family Family family	c.8.3.1 — Carbamoyl phosphate synthetase, small subunit N-terminal domain

Domain ID domain_id	d1c3od2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.23 — Flavodoxin-like
Superfamily Superfamily superfamily	c.23.16 — Class I glutamine amidotransferase-like
Family Family family	c.23.16.1 — Class I glutamine amidotransferases (GAT)

Domain ID domain_id	d1c3oe1
Class class	a — All alpha proteins
Fold Fold fold	a.92 — Carbamoyl phosphate synthetase, large subunit connection domain
Superfamily Superfamily superfamily	a.92.1 — Carbamoyl phosphate synthetase, large subunit connection domain
Family Family family	a.92.1.1 — Carbamoyl phosphate synthetase, large subunit connection domain

Domain ID domain_id	d1c3oe2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.24 — Methylglyoxal synthase-like
Superfamily Superfamily superfamily	c.24.1 — Methylglyoxal synthase-like
Family Family family	c.24.1.1 — Carbamoyl phosphate synthetase, large subunit allosteric, C-terminal domain

Domain ID domain_id	d1c3oe3
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.30 — PreATP-grasp domain
Superfamily Superfamily superfamily	c.30.1 — PreATP-grasp domain
Family Family family	c.30.1.1 — BC N-terminal domain-like

Domain ID domain_id	d1c3oe4
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.30 — PreATP-grasp domain
Superfamily Superfamily superfamily	c.30.1 — PreATP-grasp domain
Family Family family	c.30.1.1 — BC N-terminal domain-like

Domain ID domain_id	d1c3oe5
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.142 — ATP-grasp
Superfamily Superfamily superfamily	d.142.1 — Glutathione synthetase ATP-binding domain-like
Family Family family	d.142.1.2 — BC ATP-binding domain-like

Domain ID domain_id	d1c3oe6
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.142 — ATP-grasp
Superfamily Superfamily superfamily	d.142.1 — Glutathione synthetase ATP-binding domain-like
Family Family family	d.142.1.2 — BC ATP-binding domain-like

Domain ID domain_id	d1c3of1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.8 — The 'swivelling' beta/beta/alpha domain
Superfamily Superfamily superfamily	c.8.3 — Carbamoyl phosphate synthetase, small subunit N-terminal domain
Family Family family	c.8.3.1 — Carbamoyl phosphate synthetase, small subunit N-terminal domain

Domain ID domain_id	d1c3of2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.23 — Flavodoxin-like
Superfamily Superfamily superfamily	c.23.16 — Class I glutamine amidotransferase-like
Family Family family	c.23.16.1 — Class I glutamine amidotransferases (GAT)

Domain ID domain_id	d1c3og1
Class class	a — All alpha proteins
Fold Fold fold	a.92 — Carbamoyl phosphate synthetase, large subunit connection domain
Superfamily Superfamily superfamily	a.92.1 — Carbamoyl phosphate synthetase, large subunit connection domain
Family Family family	a.92.1.1 — Carbamoyl phosphate synthetase, large subunit connection domain

Domain ID domain_id	d1c3og2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.24 — Methylglyoxal synthase-like
Superfamily Superfamily superfamily	c.24.1 — Methylglyoxal synthase-like
Family Family family	c.24.1.1 — Carbamoyl phosphate synthetase, large subunit allosteric, C-terminal domain

Domain ID domain_id	d1c3og3
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.30 — PreATP-grasp domain
Superfamily Superfamily superfamily	c.30.1 — PreATP-grasp domain
Family Family family	c.30.1.1 — BC N-terminal domain-like

Domain ID domain_id	d1c3og4
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.30 — PreATP-grasp domain
Superfamily Superfamily superfamily	c.30.1 — PreATP-grasp domain
Family Family family	c.30.1.1 — BC N-terminal domain-like

Domain ID domain_id	d1c3og5
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.142 — ATP-grasp
Superfamily Superfamily superfamily	d.142.1 — Glutathione synthetase ATP-binding domain-like
Family Family family	d.142.1.2 — BC ATP-binding domain-like

Domain ID domain_id	d1c3og6
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.142 — ATP-grasp
Superfamily Superfamily superfamily	d.142.1 — Glutathione synthetase ATP-binding domain-like
Family Family family	d.142.1.2 — BC ATP-binding domain-like

Domain ID domain_id	d1c3oh1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.8 — The 'swivelling' beta/beta/alpha domain
Superfamily Superfamily superfamily	c.8.3 — Carbamoyl phosphate synthetase, small subunit N-terminal domain
Family Family family	c.8.3.1 — Carbamoyl phosphate synthetase, small subunit N-terminal domain

Domain ID domain_id	d1c3oh2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.23 — Flavodoxin-like
Superfamily Superfamily superfamily	c.23.16 — Class I glutamine amidotransferase-like
Family Family family	c.23.16.1 — Class I glutamine amidotransferases (GAT)

CATH v4.4 (40 domains)

Domain ID domain_id	1c3oA01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	1c3oA02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	470 — D-amino Acid Aminotransferase; Chain A, domain 1
Homologous superfamily homologous superfamily	20 — ATP-grasp fold, B domain

Domain ID domain_id	1c3oA03
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1490 — Dna Ligase; domain 1
Homologous superfamily homologous superfamily	20 — ATP-grasp fold, A domain

Domain ID domain_id	1c3oA04
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	1030 — Carbamoyl Phosphate Synthetase; Chain A, domain 4
Homologous superfamily homologous superfamily	10 — Carbamoyl-phosphate synthetase, large subunit oligomerisation domain

Domain ID domain_id	1c3oA05
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	1c3oA06
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	470 — D-amino Acid Aminotransferase; Chain A, domain 1
Homologous superfamily homologous superfamily	20 — ATP-grasp fold, B domain

Domain ID domain_id	1c3oA07
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1490 — Dna Ligase; domain 1
Homologous superfamily homologous superfamily	20 — ATP-grasp fold, A domain

Domain ID domain_id	1c3oA08
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1380 — Methylglyoxal synthase-like domain

Domain ID domain_id	1c3oB01
Class class	3 — Alpha Beta
Architecture architecture	50 — 3-Layer(bba) Sandwich
Topology topology	30 — Glucose Oxidase; domain 1
Homologous superfamily homologous superfamily	20 — Carbamoyl-phosphate synthase small subunit, N-terminal domain

Domain ID domain_id	1c3oB02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	880 — Class I glutamine amidotransferase (GATase) domain

Domain ID domain_id	1c3oC01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	1c3oC02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	470 — D-amino Acid Aminotransferase; Chain A, domain 1
Homologous superfamily homologous superfamily	20 — ATP-grasp fold, B domain

Domain ID domain_id	1c3oC03
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1490 — Dna Ligase; domain 1
Homologous superfamily homologous superfamily	20 — ATP-grasp fold, A domain

Domain ID domain_id	1c3oC04
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	1030 — Carbamoyl Phosphate Synthetase; Chain A, domain 4
Homologous superfamily homologous superfamily	10 — Carbamoyl-phosphate synthetase, large subunit oligomerisation domain

Domain ID domain_id	1c3oC05
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	1c3oC06
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	470 — D-amino Acid Aminotransferase; Chain A, domain 1
Homologous superfamily homologous superfamily	20 — ATP-grasp fold, B domain

Domain ID domain_id	1c3oC07
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1490 — Dna Ligase; domain 1
Homologous superfamily homologous superfamily	20 — ATP-grasp fold, A domain

Domain ID domain_id	1c3oC08
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1380 — Methylglyoxal synthase-like domain

Domain ID domain_id	1c3oD01
Class class	3 — Alpha Beta
Architecture architecture	50 — 3-Layer(bba) Sandwich
Topology topology	30 — Glucose Oxidase; domain 1
Homologous superfamily homologous superfamily	20 — Carbamoyl-phosphate synthase small subunit, N-terminal domain

Domain ID domain_id	1c3oD02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	880 — Class I glutamine amidotransferase (GATase) domain

Domain ID domain_id	1c3oE01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	1c3oE02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	470 — D-amino Acid Aminotransferase; Chain A, domain 1
Homologous superfamily homologous superfamily	20 — ATP-grasp fold, B domain

Domain ID domain_id	1c3oE03
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1490 — Dna Ligase; domain 1
Homologous superfamily homologous superfamily	20 — ATP-grasp fold, A domain

Domain ID domain_id	1c3oE04
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	1030 — Carbamoyl Phosphate Synthetase; Chain A, domain 4
Homologous superfamily homologous superfamily	10 — Carbamoyl-phosphate synthetase, large subunit oligomerisation domain

Domain ID domain_id	1c3oE05
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	1c3oE06
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	470 — D-amino Acid Aminotransferase; Chain A, domain 1
Homologous superfamily homologous superfamily	20 — ATP-grasp fold, B domain

Domain ID domain_id	1c3oE07
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1490 — Dna Ligase; domain 1
Homologous superfamily homologous superfamily	20 — ATP-grasp fold, A domain

Domain ID domain_id	1c3oE08
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1380 — Methylglyoxal synthase-like domain

Domain ID domain_id	1c3oF01
Class class	3 — Alpha Beta
Architecture architecture	50 — 3-Layer(bba) Sandwich
Topology topology	30 — Glucose Oxidase; domain 1
Homologous superfamily homologous superfamily	20 — Carbamoyl-phosphate synthase small subunit, N-terminal domain

Domain ID domain_id	1c3oF02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	880 — Class I glutamine amidotransferase (GATase) domain

Domain ID domain_id	1c3oG01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	1c3oG02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	470 — D-amino Acid Aminotransferase; Chain A, domain 1
Homologous superfamily homologous superfamily	20 — ATP-grasp fold, B domain

Domain ID domain_id	1c3oG03
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1490 — Dna Ligase; domain 1
Homologous superfamily homologous superfamily	20 — ATP-grasp fold, A domain

Domain ID domain_id	1c3oG04
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	1030 — Carbamoyl Phosphate Synthetase; Chain A, domain 4
Homologous superfamily homologous superfamily	10 — Carbamoyl-phosphate synthetase, large subunit oligomerisation domain

Domain ID domain_id	1c3oG05
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	1c3oG06
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	470 — D-amino Acid Aminotransferase; Chain A, domain 1
Homologous superfamily homologous superfamily	20 — ATP-grasp fold, B domain

Domain ID domain_id	1c3oG07
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1490 — Dna Ligase; domain 1
Homologous superfamily homologous superfamily	20 — ATP-grasp fold, A domain

Domain ID domain_id	1c3oG08
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1380 — Methylglyoxal synthase-like domain

Domain ID domain_id	1c3oH01
Class class	3 — Alpha Beta
Architecture architecture	50 — 3-Layer(bba) Sandwich
Topology topology	30 — Glucose Oxidase; domain 1
Homologous superfamily homologous superfamily	20 — Carbamoyl-phosphate synthase small subunit, N-terminal domain

Domain ID domain_id	1c3oH02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	880 — Class I glutamine amidotransferase (GATase) domain

▶

Unit-cell length a length_a	152.500 Å
Unit-cell length b length_b	164.400 Å
Unit-cell length c length_c	332.600 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	16

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

Resolution resolution	2.100 Å
Low-resolution limit resolution_low	30.000 Å
R factor r_factor	0.1890
R_work r_work	0.1880
R_free r_free	0.2580

CRYSTAL STRUCTURE OF THE CARBAMOYL PHOSPHATE SYNTHETASE: SMALL SUBUNIT MUTANT C269S WITH BOUND GLUTAMINE

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

CARBAMOYL PHOSPHATE SYNTHETASE: LARGE SUBUNIT

State in the Current Structure

Other States of the Same Protein in the Database

CARBAMOYL PHOSPHATE SYNTHETASE: SMALL SUBUNIT

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

1c3o__assembly_1__model_1

1c3o__assembly_1__model_1 | I(q)

1c3o__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 (11)

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 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 non-polymer

Entity 8 Entity 8 non-polymer

Entity 9 Entity 9 non-polymer

Entity 10 Entity 10 non-polymer

Entity 11 Entity 11 water

6. Fold Classification (SCOP + CATH) 72 domains

SCOP 2.08 (32 domains)

CATH v4.4 (40 domains)

7. Citations (1)

CRYSTAL STRUCTURE OF THE CARBAMOYL PHOSPHATE SYNTHETASE: SMALL SUBUNIT MUTANT C269S WITH BOUND GLUTAMINE

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

CARBAMOYL PHOSPHATE SYNTHETASE: LARGE SUBUNIT

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

CARBAMOYL PHOSPHATE SYNTHETASE: SMALL SUBUNIT

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

1c3o__assembly_1__model_1

1c3o__assembly_1__model_1 | I(q)

1c3o__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 (11)

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 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 non-polymer

Entity 8 Entity 8 non-polymer

Entity 9 Entity 9 non-polymer

Entity 10 Entity 10 non-polymer

Entity 11 Entity 11 water

6. Fold Classification (SCOP + CATH) 72 domains

SCOP 2.08 (32 domains)

CATH v4.4 (40 domains)

7. Citations (1)