SAXSdb — 2v2k

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

FERREDOXIN

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	FE3-S4 CLUSTER × 2 water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	FE3-S4 CLUSTER × 2 ACETATE ION × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	FER_MYCSM
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–105； UniProt 1–105 Author chain B； PDBConstruct 1–105； UniProt 1–105

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	2v2k
Deposition date deposition_date	2007-06-06
Structure title title	THE CRYSTAL STRUCTURE OF FDXA, A 7FE FERREDOXIN FROM MYCOBACTERIUM SMEGMATIS
Keywords keywords	;IRON, TRANSPORT, IRON-SULFUR, MYCOBACTERIUM TUBERCULOSIS, FE-S CLUSTER, METAL-BINDING, 7FE FERREDOXIN, ELECTRON TRANSFER, ELECTRON TRANSPORT, MYCOBACTERIUM SMEGMATIS, 4FE-4S CLUSTER INSTABILITY ;; ELECTRON 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.

2v2k__assembly_2__model_1

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

Download this curve (.dat)

2v2k__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2v2k__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	13.36 Å
Rg (electron density)	12.18 Å
Total Rg	13.15 Å
Atom count	800
Residues	102
Excluded volume	14154 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2v2k__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2v2k__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 (4)

Entity 1 Entity 1 polymer

Description description	FERREDOXIN
Molecular weight formula_weight	11432.6 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	1754

TYVIAEPCVDVKDKACIEECPVDCIYEGARMLYIHPDECVDCGACEPVCPVEAIYYEDDVPDQWSSYAQANADFFAELGSPGGASKVGQTDNDPQAIKDLPPQGE

Entity 2 Entity 2 non-polymer

Description description	FE3-S4 CLUSTER
Molecular weight formula_weight	295.8 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 3 Entity 3 non-polymer

Description description	ACETATE ION
Molecular weight formula_weight	59.0 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	118

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6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	2v2kA00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	2v2kB00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	20 —

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Unit-cell length a length_a	54.581 Å
Unit-cell length b length_b	54.526 Å
Unit-cell length c length_c	135.382 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	C 2 2 21
Space-group number int_tables_number	20
Crystal system crystal_system	—

Resolution resolution	1.600 Å
Low-resolution limit resolution_low	67.730 Å
R factor r_factor	0.1670
R_work r_work	0.1650
R_free r_free	0.2020

THE CRYSTAL STRUCTURE OF FDXA, A 7FE FERREDOXIN FROM MYCOBACTERIUM SMEGMATIS

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

FERREDOXIN

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

2v2k__assembly_2__model_1

2v2k__assembly_2__model_1 | I(q)

2v2k__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)

THE CRYSTAL STRUCTURE OF FDXA, A 7FE FERREDOXIN FROM MYCOBACTERIUM SMEGMATIS

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

FERREDOXIN

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

2v2k__assembly_2__model_1

2v2k__assembly_2__model_1 | I(q)

2v2k__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)