SAXSdb — 2z02

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

Phosphoribosylaminoimidazole-succinocarboxamide synthase

Methanocaldococcus jannaschii

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	SULFATE ION × 3 ADENOSINE-5'-TRIPHOSPHATE × 2 CITRIC ACID × 1 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PUR7_METJA
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–242； UniProt 1–242 Author chain B； PDBConstruct 1–242； UniProt 1–242

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	2z02
Deposition date deposition_date	2007-05-06
Structure title title	Crystal structure of phosphoribosylaminoimidazolesuccinocarboxamide synthase wit ATP from Methanocaldococcus jannaschii
Keywords keywords	;2-Layer Sandwich, Ligase, Purine biosynthesis, Structural Genomics, NPPSFA, National Project on Protein Structural and Functional Analyses, RIKEN Structural Genomics/Proteomics Initiative, RSGI ;; 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.

2z02__assembly_1__model_1

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

Download this curve (.dat)

2z02__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2z02__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	27.54 Å
Rg (electron density)	27.32 Å
Total Rg	28.04 Å
Atom count	4002
Residues	484
Excluded volume	71974 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2z02__assembly_1__model_1`	dimeric （2）	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 (5)

Entity 1 Entity 1 polymer

Description description	Phosphoribosylaminoimidazole-succinocarboxamide synthase
Molecular weight formula_weight	27803.2 kDa
EC 编号 ec_number	6.3.2.6
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	4301

MEIKLEEILKKQPLYSGKAKSIYEIDDDKVLIEFRDDITAGNGAKHDVKQGKGYLNALISSKLFEALEENGVKTHYIKYIEPRYMIAKKVEIIPIEVIVRNIAAGSLCRRYPFEEGKELPFPIVQFDYKNDEYGDPMLNEDIAVALGLATREELNKIKEIALKVNEVLKKLFDEKGIILVDFKIEIGKDREGNLLVADEISPDTMRLWDKETRDVLDKDVFRKDLGDVIAKYRIVAERLGLL

Source Source

Source organism organism	Methanocaldococcus jannaschii
NCBI taxonomy ID ncbi_taxonomy_id	2190
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	3

Entity 3 Entity 3 non-polymer

Description description	ADENOSINE-5'-TRIPHOSPHATE
Molecular weight formula_weight	507.2 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 non-polymer

Description description	CITRIC ACID
Molecular weight formula_weight	192.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	299

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d2z02a_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.143 — SAICAR synthase-like
Superfamily Superfamily superfamily	d.143.1 — SAICAR synthase-like
Family Family family	d.143.1.0 — automated matches

Domain ID domain_id	d2z02b_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.143 — SAICAR synthase-like
Superfamily Superfamily superfamily	d.143.1 — SAICAR synthase-like
Family Family family	d.143.1.0 — automated matches

CATH v4.4 (4 domains)

Domain ID domain_id	2z02A01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	200 — Phosphorylase Kinase; domain 1
Homologous superfamily homologous superfamily	20 — Phosphorylase Kinase; domain 1

Domain ID domain_id	2z02A02
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	2z02B01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	200 — Phosphorylase Kinase; domain 1
Homologous superfamily homologous superfamily	20 — Phosphorylase Kinase; domain 1

Domain ID domain_id	2z02B02
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

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Unit-cell length a length_a	82.099 Å
Unit-cell length b length_b	82.099 Å
Unit-cell length c length_c	85.152 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	8

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

Resolution resolution	2.030 Å
Low-resolution limit resolution_low	34.330 Å
R factor r_factor	0.2070
R_work r_work	0.2070
R_free r_free	0.2170

Crystal structure of phosphoribosylaminoimidazolesuccinocarboxamide synthase wit ATP from Methanocaldococcus jannaschii

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

Phosphoribosylaminoimidazole-succinocarboxamide synthase

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

2z02__assembly_1__model_1

2z02__assembly_1__model_1 | I(q)

2z02__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 (5)

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 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Crystal structure of phosphoribosylaminoimidazolesuccinocarboxamide synthase wit ATP from Methanocaldococcus jannaschii

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

Phosphoribosylaminoimidazole-succinocarboxamide synthase

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

2z02__assembly_1__model_1

2z02__assembly_1__model_1 | I(q)

2z02__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 (5)

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 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

CATH v4.4 (4 domains)

7. Citations (1)