SAXSdb — 1j6r

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

METHIONINE SYNTHASE

Thermotoga maritima

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q9WYA6_THEMA
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 13–214； UniProt 1–202 Author chain B； PDBConstruct 13–214； UniProt 1–202

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	1j6r
Deposition date deposition_date	2002-07-10
Structure title title	Crystal structure of Activation (AdoMet binding) domain of Methionine synthase (TM0269) from Thermotoga maritima at 2.2 A resolution
Keywords keywords	;STRUCTURAL GENOMICS, TM0269, ACTIVATION (ADOMET BINDING) DOMAIN OF METHIONINE SYNTHASE, JCSG, PSI, Protein Structure Initiative, Joint Center for Structural Genomics, TRANSFERASE ;; 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.

1j6r__assembly_2__model_1

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

Download this curve (.dat)

1j6r__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1j6r__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	19.51 Å
Rg (electron density)	18.14 Å
Total Rg	19.09 Å
Atom count	1573
Residues	197
Excluded volume	28335 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1j6r__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1j6r__assembly_2__model_1`	monomeric （1）	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)

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1j6ra1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.173 — Methionine synthase activation domain-like
Superfamily Superfamily superfamily	d.173.1 — Methionine synthase activation domain-like
Family Family family	d.173.1.2 — Hypothetical protein TM0269

Domain ID domain_id	d1j6ra2
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	d1j6rb1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.173 — Methionine synthase activation domain-like
Superfamily Superfamily superfamily	d.173.1 — Methionine synthase activation domain-like
Family Family family	d.173.1.2 — Hypothetical protein TM0269

Domain ID domain_id	d1j6rb2
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	1j6rA00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	109 — NADH Oxidase
Homologous superfamily homologous superfamily	40 —

Domain ID domain_id	1j6rB00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	109 — NADH Oxidase
Homologous superfamily homologous superfamily	40 —

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Unit-cell length a length_a	119.396 Å
Unit-cell length b length_b	60.740 Å
Unit-cell length c length_c	81.574 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	99.97 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	8

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	2.300 Å
Low-resolution limit resolution_low	36.220 Å
R factor r_factor	0.2510
R_work r_work	0.2510
R_free r_free	0.2900

Description description	METHIONINE SYNTHASE
Molecular weight formula_weight	24384.0 kDa
EC 编号 ec_number	2.1.1.13
Source method src_method	man
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	3249

Crystal structure of Activation (AdoMet binding) domain of Methionine synthase (TM0269) from Thermotoga maritima at 2.2 A resolution

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

METHIONINE SYNTHASE

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

1j6r__assembly_2__model_1

1j6r__assembly_2__model_1 | I(q)

1j6r__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Source organism organism	Thermotoga maritima
NCBI taxonomy ID ncbi_taxonomy_id	2336
Host organism host_organism	Escherichia coli

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	103

Crystal structure of Activation (AdoMet binding) domain of Methionine synthase (TM0269) from Thermotoga maritima at 2.2 A resolution

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

METHIONINE SYNTHASE

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

1j6r__assembly_2__model_1

1j6r__assembly_2__model_1 | I(q)

1j6r__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

CATH v4.4 (2 domains)

7. Citations (1)