SAXSdb — 2guw

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

AMP nucleosidase

Salmonella typhimurium

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 6	water × 6	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	water × 2	Consistent with protein count
3	Protein homooligomer	Homooligomer	Protein 2	water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q8ZNS0_SALTY
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–484； UniProt 1–484 Author chain B； PDBConstruct 1–484； UniProt 1–484 Author chain C； PDBConstruct 1–484； UniProt 1–484

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	2guw
Deposition date deposition_date	2006-05-01
Structure title title	Crystal structure of AMP Nucleosidase from Salmonella typhimurium LT2
Keywords keywords	;AMP Nucleosidase, Molecular Replacement, Structural Genomics, PSI, Protein Structure Initiative, New York SGX Research Center for Structural Genomics, NYSGXRC, HYDROLASE ;; HYDROLASE
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.

2guw__assembly_3__model_1

Assembly 3 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

2guw__assembly_3__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2guw__assembly_3__model_1 | P(r) · Pending

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

Rg（Guinier）	29.34 Å
Rg (electron density)	28.44 Å
Total Rg	29.09 Å
Atom count	5928
Residues	788
Excluded volume	104700 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2guw__assembly_1__model_1`	hexameric （6）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2guw__assembly_2__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`2guw__assembly_3__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 (2)

Entity 1 Entity 1 polymer

Description description	AMP nucleosidase
Molecular weight formula_weight	54067.8 kDa
EC 编号 ec_number	3.2.2.4
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	9415

MENKGTNLTPEQALDRLEELYEQSVNALREAIADYVDNGTLPDPHARLNGLFVYPSLSVSWDGATPNPPKTRAFGRFTHPGCYTTTVTRPALFRAYLLEQLNLVYHDYGAHIAVEASHHEIPYPYVIDGSALTLDRSMSAGLTRHFPTTELAQIGDETADGLFHPGEFYPLSHFDARRVDFSLARLRHYTGTPVEHFQPFVLFTNYTRYVDEFVRWGCSQILDPDSPYIALSCAGGIWITAETEAPEEAISDLAWKKHQMPAWHLVTADGQGITLVNIGVGPSNAKTICDHLAVLRPDVWLMIGHCGGLRESQAIGDYVLAHAYLRDDHVLDAVLPPDIPIPSIAEVQRALYDATKAVSGMPGEEVKQRLRTGTVVTTDDRNWELRYSASALRFNLSRAVAIDMESATIAAQGYRFRVPYGTLLCVSDKPLHGEIKLPGQANRFYEGAISEHLQIGIRAIDLLRAEGDRLHSRKLRTFNEPPFR

Source Source

Source organism organism	Salmonella typhimurium
NCBI taxonomy ID ncbi_taxonomy_id	99287
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	29

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6. Fold Classification (SCOP + CATH) 9 domains

SCOP 2.08 (3 domains)

Domain ID domain_id	d2guwa_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.56 — Phosphorylase/hydrolase-like
Superfamily Superfamily superfamily	c.56.2 — Purine and uridine phosphorylases
Family Family family	c.56.2.1 — Purine and uridine phosphorylases

Domain ID domain_id	d2guwb_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.56 — Phosphorylase/hydrolase-like
Superfamily Superfamily superfamily	c.56.2 — Purine and uridine phosphorylases
Family Family family	c.56.2.1 — Purine and uridine phosphorylases

Domain ID domain_id	d2guwc_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.56 — Phosphorylase/hydrolase-like
Superfamily Superfamily superfamily	c.56.2 — Purine and uridine phosphorylases
Family Family family	c.56.2.1 — Purine and uridine phosphorylases

CATH v4.4 (6 domains)

Domain ID domain_id	2guwA01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1730 — amp nucleosidase, domain 1
Homologous superfamily homologous superfamily	10 — AMP nucleoside phosphorylase, N-terminal domain

Domain ID domain_id	2guwA02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1580 — Nucleoside phosphorylase domain

Domain ID domain_id	2guwB01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1730 — amp nucleosidase, domain 1
Homologous superfamily homologous superfamily	10 — AMP nucleoside phosphorylase, N-terminal domain

Domain ID domain_id	2guwB02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1580 — Nucleoside phosphorylase domain

Domain ID domain_id	2guwC01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1730 — amp nucleosidase, domain 1
Homologous superfamily homologous superfamily	10 — AMP nucleoside phosphorylase, N-terminal domain

Domain ID domain_id	2guwC02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1580 — Nucleoside phosphorylase domain

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Unit-cell length a length_a	116.493 Å
Unit-cell length b length_b	170.284 Å
Unit-cell length c length_c	204.105 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	I 2 2 2
Space-group number int_tables_number	23
Crystal system crystal_system	—

Resolution resolution	2.640 Å
Low-resolution limit resolution_low	45.070 Å
R factor r_factor	0.2440
R_work r_work	0.2440
R_free r_free	0.2820

Crystal structure of AMP Nucleosidase from Salmonella typhimurium LT2

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

AMP nucleosidase

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

2guw__assembly_3__model_1

2guw__assembly_3__model_1 | I(q)

2guw__assembly_3__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 9 domains

SCOP 2.08 (3 domains)

CATH v4.4 (6 domains)

7. Citations (1)

Crystal structure of AMP Nucleosidase from Salmonella typhimurium LT2

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

AMP nucleosidase

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

2guw__assembly_3__model_1

2guw__assembly_3__model_1 | I(q)

2guw__assembly_3__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 9 domains

SCOP 2.08 (3 domains)

CATH v4.4 (6 domains)

7. Citations (1)