SAXSdb — 4mt2

▼

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

METALLOTHIONEIN ISOFORM II

Rattus rattus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	CADMIUM ION × 10 ZINC ION × 4 SODIUM ION × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	MT2_RAT
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–62； UniProt 1–61

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.

▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id	4mt2
Deposition date deposition_date	1993-02-26
Structure title title	COMPARISON OF THE NMR SOLUTION STRUCTURE AND THE X-RAY CRYSTAL STRUCTURE OF RAT METALLOTHIONEIN-2
Keywords keywords	METALLOTHIONEIN; METALLOTHIONEIN
Experimental Method method	X-RAY DIFFRACTION

▼

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.

4mt2__assembly_1__model_1

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

Download this curve (.dat)

4mt2__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4mt2__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	15.36 Å
Rg (electron density)	15.11 Å
Total Rg	15.43 Å
Atom count	822
Residues	122
Excluded volume	14764 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4mt2__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download

▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (5)

Entity 1 Entity 1 polymer

Description description	METALLOTHIONEIN ISOFORM II
Molecular weight formula_weight	6179.4 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	480

XMDPNCSCATDGSCSCAGSCKCKQCKCTSCKKSCCSCCPVGCAKCSQGCICKEASDKCSCCA

Source Source

Source organism organism	Rattus rattus
Common name common_name	black rat
NCBI taxonomy ID ncbi_taxonomy_id	10117

Entity 2 Entity 2 non-polymer

Description description	CADMIUM ION
Molecular weight formula_weight	112.4 kDa
Source method src_method	syn
Copy count entity_count	5

Entity 3 Entity 3 non-polymer

Description description	ZINC ION
Molecular weight formula_weight	65.4 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 non-polymer

Description description	SODIUM ION
Molecular weight formula_weight	23.0 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	69

▼

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d4mt2a_
Class class	g — Small proteins
Fold Fold fold	g.46 — Metallothionein
Superfamily Superfamily superfamily	g.46.1 — Metallothionein
Family Family family	g.46.1.1 — Metallothionein

CATH v4.4 (1 domains)

Domain ID domain_id	4mt2A00
Class class	4 — Few Secondary Structures
Architecture architecture	10 — Irregular
Topology topology	10 — Metallothionein Isoform II
Homologous superfamily homologous superfamily	10 — Metallothionein Isoform II

▶

Unit-cell length a length_a	30.900 Å
Unit-cell length b length_b	30.900 Å
Unit-cell length c length_c	120.400 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 43 21 2
Space-group number int_tables_number	96
Crystal system crystal_system	—

Resolution resolution	2.000 Å
Low-resolution limit resolution_low	5.000 Å
R factor r_factor	—
R_work r_work	0.1970
R_free r_free	—

COMPARISON OF THE NMR SOLUTION STRUCTURE AND THE X-RAY CRYSTAL STRUCTURE OF RAT METALLOTHIONEIN-2

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

METALLOTHIONEIN ISOFORM II

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

4mt2__assembly_1__model_1

4mt2__assembly_1__model_1 | I(q)

4mt2__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

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) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (4)

COMPARISON OF THE NMR SOLUTION STRUCTURE AND THE X-RAY CRYSTAL STRUCTURE OF RAT METALLOTHIONEIN-2

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

METALLOTHIONEIN ISOFORM II

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

4mt2__assembly_1__model_1

4mt2__assembly_1__model_1 | I(q)

4mt2__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

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) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (4)