2ab6

HUMAN GLUTATHIONE S-TRANSFERASE M2-2 (E.C.2.5.1.18) complexed with S-METHYLGLUTATHIONE

Method: X-RAY DIFFRACTION

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

Glutathione S-transferase Mu 2

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	L-GAMMA-GLUTAMYL-S-METHYLCYSTEINYLGLYCINE × 2 water × 2	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	L-GAMMA-GLUTAMYL-S-METHYLCYSTEINYLGLYCINE × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	GSTM2_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–217； UniProt 1–217 Author chain B； PDBConstruct 1–217； UniProt 1–217 Author chain C； PDBConstruct 1–217； UniProt 1–217 Author chain D； PDBConstruct 1–217； UniProt 1–217

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	2ab6
Deposition date deposition_date	2005-07-14
Structure title title	HUMAN GLUTATHIONE S-TRANSFERASE M2-2 (E.C.2.5.1.18) complexed with S-METHYLGLUTATHIONE
Keywords keywords	TRANSFERASE, S-METHYLGLUTATHIONE, CONJUGATION, DETOXIFICATION; TRANSFERASE
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.

2ab6__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

2ab6__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2ab6__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	22.51 Å
Rg (electron density)	21.40 Å
Total Rg	22.29 Å
Atom count	3656
Residues	434
Excluded volume	65548 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2ab6__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2ab6__assembly_2__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 (3)

Entity 1 Entity 1 polymer

Description description	Glutathione S-transferase Mu 2
Molecular weight formula_weight	25645.5 kDa
EC 编号 ec_number	2.5.1.18
Source method src_method	man
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	7515

PMTLGYWNIRGLAHSIRLLLEYTDSSYEEKKYTMGDAPDYDRSQWLNEKFKLGLDFPNLPYLIDGTHKITQSNAILRYIARKHNLCGESEKEQIREDILENQFMDSRMQLAKLCYDPDFEKLKPEYLQALPEMLKLYSQFLGKQPWFLGDKITFVDFIAYDVLERNQVFEPSCLDAFPNLKDFISRFEGLEKISAYMKSSRFLPRPVFTKMAVWGNK

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 BL21(DE3)

Entity 2 Entity 2 non-polymer

Description description	L-GAMMA-GLUTAMYL-S-METHYLCYSTEINYLGLYCINE
Molecular weight formula_weight	321.4 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	203

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6. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (8 domains)

Domain ID domain_id	d2ab6a1
Class class	a — All alpha proteins
Fold Fold fold	a.45 — GST C-terminal domain-like
Superfamily Superfamily superfamily	a.45.1 — GST C-terminal domain-like
Family Family family	a.45.1.1 — Glutathione S-transferase (GST), C-terminal domain

Domain ID domain_id	d2ab6a2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.5 — Glutathione S-transferase (GST), N-terminal domain

Domain ID domain_id	d2ab6b1
Class class	a — All alpha proteins
Fold Fold fold	a.45 — GST C-terminal domain-like
Superfamily Superfamily superfamily	a.45.1 — GST C-terminal domain-like
Family Family family	a.45.1.1 — Glutathione S-transferase (GST), C-terminal domain

Domain ID domain_id	d2ab6b2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.5 — Glutathione S-transferase (GST), N-terminal domain

Domain ID domain_id	d2ab6c1
Class class	a — All alpha proteins
Fold Fold fold	a.45 — GST C-terminal domain-like
Superfamily Superfamily superfamily	a.45.1 — GST C-terminal domain-like
Family Family family	a.45.1.1 — Glutathione S-transferase (GST), C-terminal domain

Domain ID domain_id	d2ab6c2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.5 — Glutathione S-transferase (GST), N-terminal domain

Domain ID domain_id	d2ab6d1
Class class	a — All alpha proteins
Fold Fold fold	a.45 — GST C-terminal domain-like
Superfamily Superfamily superfamily	a.45.1 — GST C-terminal domain-like
Family Family family	a.45.1.1 — Glutathione S-transferase (GST), C-terminal domain

Domain ID domain_id	d2ab6d2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.5 — Glutathione S-transferase (GST), N-terminal domain

CATH v4.4 (8 domains)

Domain ID domain_id	2ab6A01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	2ab6A02
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1050 — Glutathione S-transferase Yfyf (Class Pi); Chain A, domain 2
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2ab6B01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	2ab6B02
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1050 — Glutathione S-transferase Yfyf (Class Pi); Chain A, domain 2
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2ab6C01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	2ab6C02
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1050 — Glutathione S-transferase Yfyf (Class Pi); Chain A, domain 2
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2ab6D01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	2ab6D02
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1050 — Glutathione S-transferase Yfyf (Class Pi); Chain A, domain 2
Homologous superfamily homologous superfamily	10 —

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Unit-cell length a length_a	56.120 Å
Unit-cell length b length_b	76.716 Å
Unit-cell length c length_c	212.449 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 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.500 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	0.2303
R_work r_work	0.2287
R_free r_free	0.2796

HUMAN GLUTATHIONE S-TRANSFERASE M2-2 (E.C.2.5.1.18) complexed with S-METHYLGLUTATHIONE

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

Glutathione S-transferase Mu 2

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

2ab6__assembly_2__model_1

2ab6__assembly_2__model_1 | I(q)

2ab6__assembly_2__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (8 domains)

CATH v4.4 (8 domains)

7. Citations (4)

HUMAN GLUTATHIONE S-TRANSFERASE M2-2 (E.C.2.5.1.18) complexed with S-METHYLGLUTATHIONE

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

Glutathione S-transferase Mu 2

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

2ab6__assembly_2__model_1

2ab6__assembly_2__model_1 | I(q)

2ab6__assembly_2__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (8 domains)

CATH v4.4 (8 domains)

7. Citations (4)