SAXSdb — 3vpn

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

Ribonucleoside-diphosphate reductase subunit M2

Homo sapiens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	FE (III) ION × 2 MAGNESIUM ION × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RIR2_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–286； UniProt 66–350 Author chain B； PDBConstruct 2–286； UniProt 66–350

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	3vpn
Deposition date deposition_date	2012-03-05
Structure title title	Crystal structure of human ribonucleotide reductase subunit M2 (hRRM2) mutant
Keywords keywords	Metal-binding, OXIDOREDUCTASE; OXIDOREDUCTASE
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.

3vpn__assembly_1__model_1

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

Download this curve (.dat)

3vpn__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3vpn__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	26.52 Å
Rg (electron density)	25.78 Å
Total Rg	26.73 Å
Atom count	4736
Residues	572
Excluded volume	85001 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3vpn__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	Ribonucleoside-diphosphate reductase subunit M2
Molecular weight formula_weight	33605.7 kDa
EC 编号 ec_number	1.17.4.1
Mutation mutation	E106D
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	4960

MGVEDEPLLRENPRRFVIFPIEYHDIWQMYKKAEASFWTAEDVDLSKDIQHWESLKPEERYFISHVLAFFAASDGIVNENLVERFSQEVQITEARCFYGFQIAMENIHSEMYSLLIDTYIKDPKEREFLFNAIETMPCVKKKADWALRWIGDKEATYGERVVAFAAVEGIFFSGSFASIFWLKKRGLMPGLTFSNELISRDEGLHCDFACLMFKHLVHKPSEERVREIIINAVRIEQEFLTEALPVKLIGMNCTLMKQYIEFVADRLMLELGFSKVFRVENPFDFM

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	FE (III) ION
Molecular weight formula_weight	55.8 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
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	210

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d3vpna1
Class class	a — All alpha proteins
Fold Fold fold	a.25 — Ferritin-like
Superfamily Superfamily superfamily	a.25.1 — Ferritin-like
Family Family family	a.25.1.2 — Ribonucleotide reductase-like

Domain ID domain_id	d3vpna2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d3vpnb1
Class class	a — All alpha proteins
Fold Fold fold	a.25 — Ferritin-like
Superfamily Superfamily superfamily	a.25.1 — Ferritin-like
Family Family family	a.25.1.2 — Ribonucleotide reductase-like

Domain ID domain_id	d3vpnb2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

CATH v4.4 (2 domains)

Domain ID domain_id	3vpnA00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	620 — Ribonucleotide Reductase, subunit A
Homologous superfamily homologous superfamily	20 — Ribonucleotide Reductase, subunit A

Domain ID domain_id	3vpnB00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	620 — Ribonucleotide Reductase, subunit A
Homologous superfamily homologous superfamily	20 — Ribonucleotide Reductase, subunit A

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Unit-cell length a length_a	109.082 Å
Unit-cell length b length_b	109.082 Å
Unit-cell length c length_c	176.523 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 43 21 2
Space-group number int_tables_number	96
Crystal system crystal_system	—

Resolution resolution	2.250 Å
Low-resolution limit resolution_low	35.340 Å
R factor r_factor	0.2134
R_work r_work	0.2116
R_free r_free	0.2467

Crystal structure of human ribonucleotide reductase subunit M2 (hRRM2) mutant

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

Ribonucleoside-diphosphate reductase subunit M2

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

3vpn__assembly_1__model_1

3vpn__assembly_1__model_1 | I(q)

3vpn__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) 6 domains

SCOP 2.08 (4 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Crystal structure of human ribonucleotide reductase subunit M2 (hRRM2) mutant

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

Ribonucleoside-diphosphate reductase subunit M2

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

3vpn__assembly_1__model_1

3vpn__assembly_1__model_1 | I(q)

3vpn__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) 6 domains

SCOP 2.08 (4 domains)

CATH v4.4 (2 domains)

7. Citations (1)