SAXSdb — 2c40

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

INOSINE-URIDINE PREFERRING NUCLEOSIDE HYDROLASE FAMILY PROTEIN

BACILLUS ANTHRACIS

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	CALCIUM ION × 2 alpha-D-ribofuranose × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q81QM4_BACAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–312； UniProt 1–312 Author chain B； PDBConstruct 1–312； UniProt 1–312

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	2c40
Deposition date deposition_date	2005-10-13
Structure title title	CRYSTAL STRUCTURE OF INOSINE-URIDINE PREFERRING NUCLEOSIDE HYDROLASE FROM BACILLUS ANTHRACIS AT 2.2A RESOLUTION
Keywords keywords	HYDROLASE, NUCLEOSIDE HYDROLASE, SPINE; 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.

2c40__assembly_1__model_1

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

Download this curve (.dat)

2c40__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2c40__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	28.01 Å
Rg (electron density)	27.14 Å
Total Rg	27.90 Å
Atom count	4711
Residues	602
Excluded volume	84081 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2c40__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 (4)

Entity 1 Entity 1 polymer

Description description	INOSINE-URIDINE PREFERRING NUCLEOSIDE HYDROLASE FAMILY PROTEIN
Molecular weight formula_weight	35266.1 kDa
EC 编号 ec_number	3.2.2.1
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	4867

MKKVYFNHDGGVDDLVSLFLLLQMDNVELTGVSVIPADCYLEPAMSASRKIIDRFGKNTIEVAASNSRGKNPFPKDWRMHAFYVDALPILNESGKVVTHVAAKPAHHHLIETLLQTEEKTTLLFTGPLTDLARALYEAPIIENKIKRLVWMGGTFRTAGNVHEPEHDGTAEWNSFWDPEAVARVWEANIEIDLITLESTNQVPLTIDIREQWAKERKYIGIDFLGQCYAIVPPLVHFAKNSTYYLWDVLTAAFVGKADLAKVQTINSIVHTYGPSQGRTVETDDGRPVHVVYDVNHDRFFDYITRLAKKVST

Source Source

Source organism organism	BACILLUS ANTHRACIS
NCBI taxonomy ID ncbi_taxonomy_id	198094
Host organism host_organism	ESCHERICHIA COLI

Entity 2 Entity 2 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 non-polymer

Description description	alpha-D-ribofuranose
Molecular weight formula_weight	150.1 kDa
Source method src_method	man
Copy count entity_count	2

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	125

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d2c40a_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.70 — Nucleoside hydrolase
Superfamily Superfamily superfamily	c.70.1 — Nucleoside hydrolase
Family Family family	c.70.1.0 — automated matches

Domain ID domain_id	d2c40b_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.70 — Nucleoside hydrolase
Superfamily Superfamily superfamily	c.70.1 — Nucleoside hydrolase
Family Family family	c.70.1.0 — automated matches

CATH v4.4 (2 domains)

Domain ID domain_id	2c40A00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	245 — Inosine-uridine Nucleoside N-ribohydrolase; Chain A
Homologous superfamily homologous superfamily	10 — Ribonucleoside hydrolase-like

Domain ID domain_id	2c40B00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	245 — Inosine-uridine Nucleoside N-ribohydrolase; Chain A
Homologous superfamily homologous superfamily	10 — Ribonucleoside hydrolase-like

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Unit-cell length a length_a	78.154 Å
Unit-cell length b length_b	78.154 Å
Unit-cell length c length_c	203.626 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 32 2 1
Space-group number int_tables_number	154
Crystal system crystal_system	—

Resolution resolution	2.200 Å
Low-resolution limit resolution_low	67.880 Å
R factor r_factor	0.2070
R_work r_work	0.2050
R_free r_free	0.2420

CRYSTAL STRUCTURE OF INOSINE-URIDINE PREFERRING NUCLEOSIDE HYDROLASE FROM BACILLUS ANTHRACIS AT 2.2A RESOLUTION

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

INOSINE-URIDINE PREFERRING NUCLEOSIDE HYDROLASE FAMILY PROTEIN

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

2c40__assembly_1__model_1

2c40__assembly_1__model_1 | I(q)

2c40__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)

CRYSTAL STRUCTURE OF INOSINE-URIDINE PREFERRING NUCLEOSIDE HYDROLASE FROM BACILLUS ANTHRACIS AT 2.2A RESOLUTION

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

INOSINE-URIDINE PREFERRING NUCLEOSIDE HYDROLASE FAMILY PROTEIN

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

2c40__assembly_1__model_1

2c40__assembly_1__model_1 | I(q)

2c40__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)