SAXSdb — 2wjg

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

FERROUS IRON TRANSPORT PROTEIN B HOMOLOG

METHANOCALDOCOCCUS JANNASCHII

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	GUANOSINE-5'-DIPHOSPHATE × 1 water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	GUANOSINE-5'-DIPHOSPHATE × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	FEOB_METJA
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 5–188； UniProt 1–184 Author chain B； PDBConstruct 5–188； UniProt 1–184

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	2wjg
Deposition date deposition_date	2009-05-26
Structure title title	Structure and function of the FeoB G-domain from Methanococcus jannaschii
Keywords keywords	;MEMBRANE G-PROTEINS, FERROUS IRON TRANSPORT, CELL MEMBRANE, ION TRANSPORT, TRANSMEMBRANE, NUCLEOTIDE BINDING MOTIFS, METAL TRANSPORT, IRON, GNBPS, MEMBRANE, TRANSPORT, GTP-BINDING, IRON TRANSPORT, NUCLEOTIDE-BINDING ;; METAL TRANSPORT
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.

2wjg__assembly_1__model_1

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

Download this curve (.dat)

2wjg__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2wjg__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	16.95 Å
Rg (electron density)	15.53 Å
Total Rg	16.74 Å
Atom count	1332
Residues	170
Excluded volume	24104 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2wjg__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2wjg__assembly_2__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`2wjg__assembly_3__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 (4)

Entity 1 Entity 1 polymer

Description description	FERROUS IRON TRANSPORT PROTEIN B HOMOLOG
Molecular weight formula_weight	20770.2 kDa
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	2811

GGSHMKSYEIALIGNPNVGKSTIFNALTGENVYIGNWPGVTVEKKEGEFEYNGEKFKVVDLPGVYSLTANSIDEIIARDYIINEKPDLVVNIVDATALERNLYLTLQLMEMGANLLLALNKMDLAKSLGIEIDVDKLEKILGVKVVPLSAAKKMGIEELKKAISIAVKDKKTAEIKYPNFEPYIKKIT

Source Source

Source organism organism	METHANOCALDOCOCCUS JANNASCHII
NCBI taxonomy ID ncbi_taxonomy_id	2190
Host organism host_organism	ESCHERICHIA COLI

Entity 2 Entity 2 polymer

Description description	POLYALANINE
Molecular weight formula_weight	515.6 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C

AAAAAAA

Entity 3 Entity 3 non-polymer

Description description	GUANOSINE-5'-DIPHOSPHATE
Molecular weight formula_weight	443.2 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	135

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d2wjga_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.0 — automated matches

Domain ID domain_id	d2wjgb_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.0 — automated matches

CATH v4.4 (2 domains)

Domain ID domain_id	2wjgA00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	2wjgB00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

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Unit-cell length a length_a	84.770 Å
Unit-cell length b length_b	84.770 Å
Unit-cell length c length_c	137.900 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	2.200 Å
Low-resolution limit resolution_low	29.287 Å
R factor r_factor	0.2177
R_work r_work	0.2162
R_free r_free	0.2442

Structure and function of the FeoB G-domain from Methanococcus jannaschii

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

FERROUS IRON TRANSPORT PROTEIN B HOMOLOG

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

2wjg__assembly_1__model_1

2wjg__assembly_1__model_1 | I(q)

2wjg__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 polymer

Polymer 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)

Structure and function of the FeoB G-domain from Methanococcus jannaschii

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

FERROUS IRON TRANSPORT PROTEIN B HOMOLOG

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

2wjg__assembly_1__model_1

2wjg__assembly_1__model_1 | I(q)

2wjg__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 polymer

Polymer 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)