1b4n

FORMALDEHYDE FERREDOXIN OXIDOREDUCTASE FROM PYROCOCCUS FURIOSUS, COMPLEXED WITH GLUTARATE

Method: X-RAY DIFFRACTION

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

FORMALDEHYDE FERREDOXIN OXIDOREDUCTASE

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 4	CALCIUM ION × 4 IRON/SULFUR CLUSTER × 4 GLUTARIC ACID × 4 TUNGSTOPTERIN COFACTOR × 4 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	O93738_PYRFU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–619； UniProt 1–619 Author chain B； PDBConstruct 1–619； UniProt 1–619 Author chain C； PDBConstruct 1–619； UniProt 1–619 Author chain D； PDBConstruct 1–619； UniProt 1–619

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	1b4n
Deposition date deposition_date	1998-12-24
Structure title title	FORMALDEHYDE FERREDOXIN OXIDOREDUCTASE FROM PYROCOCCUS FURIOSUS, COMPLEXED WITH GLUTARATE
Keywords keywords	OXIDOREDUCTASE, TUNGSTOENZYME, MOCO, TUNGSTEN CONTAINING PROTEIN, HYPERTHERMOPHILE; OXIDOREDUCTASE
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.

1b4n__assembly_1__model_1

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

Download this curve (.dat)

1b4n__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1b4n__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	46.08 Å
Rg (electron density)	45.94 Å
Total Rg	45.86 Å
Atom count	19416
Residues	2444
Excluded volume	347300 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1b4n__assembly_1__model_1`	tetrameric （4）	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 (6)

Entity 1 Entity 1 polymer

Description description	FORMALDEHYDE FERREDOXIN OXIDOREDUCTASE
Molecular weight formula_weight	68860.7 kDa
Source method src_method	nat
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	19600

MYGWWGRILRVNLTTGEVKVQEYPEEVAKKFIGGRGLAAWILWNEARGVEPLSPENKLIFAAGPFNGLPTPSGGKLVVAAKSPLTGGYGDGNLGTMASVHLRRAGYDALVVEGKAKKPVYIYIEDDNVSILSAEGLWGKTTFETERELKEIHGKNVGVLTIGPAGENLVKYAVVISQEGRAAGRPGMGAVMGSKKLKAVVIRGTKEIPVADKEELKKLSQEAYNEILNSPGYPFWKRQGTMAAVEWCNTNYALPTRNFSDGYFEFARSIDGYTMEGMKVQQRGCPYCNMPCGNVVLDAEGQESELDYENVALLGSNLGIGKLNEVSVLNRIADEMGMDTISLGVSIAHVMEAVERGILKEGPTFGDFKGAKQLALDIAYRKGELGNLAAEGVKAMAEKLGTHDFAMHVKGLEVSGYNCYIYPAMALAYGTSAIGAHHKEAWVIAWEIGTAPIEGEKAEKVEYKISYDPIKAQKVVELQRLRGGLFEMLTACRLPWVEVGLSLDYYPKLLKAITGVTYTWDDLYKAADRVYSLIRAYWVREFNGKWDRKMDYPPKRWFTEGLKSGPHKGEHLDEKKYDELLSEYYRIRGWDERGIPKKETLKELDLDFVIPELEKVTNLE

Entity 2 Entity 2 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 3 Entity 3 non-polymer

Description description	IRON/SULFUR CLUSTER
Molecular weight formula_weight	351.6 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 4 Entity 4 non-polymer

Description description	GLUTARIC ACID
Molecular weight formula_weight	132.1 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 5 Entity 5 non-polymer

Description description	TUNGSTOPTERIN COFACTOR
Molecular weight formula_weight	1031.9 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 6 Entity 6 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	184

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6. Fold Classification (SCOP + CATH) 20 domains

SCOP 2.08 (8 domains)

Domain ID domain_id	d1b4na1
Class class	a — All alpha proteins
Fold Fold fold	a.110 — Aldehyde ferredoxin oxidoreductase, C-terminal domains
Superfamily Superfamily superfamily	a.110.1 — Aldehyde ferredoxin oxidoreductase, C-terminal domains
Family Family family	a.110.1.1 — Aldehyde ferredoxin oxidoreductase, C-terminal domains

Domain ID domain_id	d1b4na2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.152 — Aldehyde ferredoxin oxidoreductase, N-terminal domain
Superfamily Superfamily superfamily	d.152.1 — Aldehyde ferredoxin oxidoreductase, N-terminal domain
Family Family family	d.152.1.1 — Aldehyde ferredoxin oxidoreductase, N-terminal domain

Domain ID domain_id	d1b4nb1
Class class	a — All alpha proteins
Fold Fold fold	a.110 — Aldehyde ferredoxin oxidoreductase, C-terminal domains
Superfamily Superfamily superfamily	a.110.1 — Aldehyde ferredoxin oxidoreductase, C-terminal domains
Family Family family	a.110.1.1 — Aldehyde ferredoxin oxidoreductase, C-terminal domains

Domain ID domain_id	d1b4nb2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.152 — Aldehyde ferredoxin oxidoreductase, N-terminal domain
Superfamily Superfamily superfamily	d.152.1 — Aldehyde ferredoxin oxidoreductase, N-terminal domain
Family Family family	d.152.1.1 — Aldehyde ferredoxin oxidoreductase, N-terminal domain

Domain ID domain_id	d1b4nc1
Class class	a — All alpha proteins
Fold Fold fold	a.110 — Aldehyde ferredoxin oxidoreductase, C-terminal domains
Superfamily Superfamily superfamily	a.110.1 — Aldehyde ferredoxin oxidoreductase, C-terminal domains
Family Family family	a.110.1.1 — Aldehyde ferredoxin oxidoreductase, C-terminal domains

Domain ID domain_id	d1b4nc2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.152 — Aldehyde ferredoxin oxidoreductase, N-terminal domain
Superfamily Superfamily superfamily	d.152.1 — Aldehyde ferredoxin oxidoreductase, N-terminal domain
Family Family family	d.152.1.1 — Aldehyde ferredoxin oxidoreductase, N-terminal domain

Domain ID domain_id	d1b4nd1
Class class	a — All alpha proteins
Fold Fold fold	a.110 — Aldehyde ferredoxin oxidoreductase, C-terminal domains
Superfamily Superfamily superfamily	a.110.1 — Aldehyde ferredoxin oxidoreductase, C-terminal domains
Family Family family	a.110.1.1 — Aldehyde ferredoxin oxidoreductase, C-terminal domains

Domain ID domain_id	d1b4nd2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.152 — Aldehyde ferredoxin oxidoreductase, N-terminal domain
Superfamily Superfamily superfamily	d.152.1 — Aldehyde ferredoxin oxidoreductase, N-terminal domain
Family Family family	d.152.1.1 — Aldehyde ferredoxin oxidoreductase, N-terminal domain

CATH v4.4 (12 domains)

Domain ID domain_id	1b4nA01
Class class	3 — Alpha Beta
Architecture architecture	60 — 4-Layer Sandwich
Topology topology	9 — Aldehyde Ferredoxin Oxidoreductase; A, domain 1
Homologous superfamily homologous superfamily	10 — Aldehyde ferredoxin oxidoreductase, N-terminal domain

Domain ID domain_id	1b4nA02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	569 — Aldehyde Ferredoxin Oxidoreductase Protein, subunit A; domain 2
Homologous superfamily homologous superfamily	10 — Aldehyde Ferredoxin Oxidoreductase Protein, subunit A, domain 2

Domain ID domain_id	1b4nA03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	599 — Aldehyde Ferredoxin Oxidoreductase Protein, subunit A; domain 3
Homologous superfamily homologous superfamily	10 — Aldehyde Ferredoxin Oxidoreductase Protein, subunit A, domain 3

Domain ID domain_id	1b4nB01
Class class	3 — Alpha Beta
Architecture architecture	60 — 4-Layer Sandwich
Topology topology	9 — Aldehyde Ferredoxin Oxidoreductase; A, domain 1
Homologous superfamily homologous superfamily	10 — Aldehyde ferredoxin oxidoreductase, N-terminal domain

Domain ID domain_id	1b4nB02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	569 — Aldehyde Ferredoxin Oxidoreductase Protein, subunit A; domain 2
Homologous superfamily homologous superfamily	10 — Aldehyde Ferredoxin Oxidoreductase Protein, subunit A, domain 2

Domain ID domain_id	1b4nB03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	599 — Aldehyde Ferredoxin Oxidoreductase Protein, subunit A; domain 3
Homologous superfamily homologous superfamily	10 — Aldehyde Ferredoxin Oxidoreductase Protein, subunit A, domain 3

Domain ID domain_id	1b4nC01
Class class	3 — Alpha Beta
Architecture architecture	60 — 4-Layer Sandwich
Topology topology	9 — Aldehyde Ferredoxin Oxidoreductase; A, domain 1
Homologous superfamily homologous superfamily	10 — Aldehyde ferredoxin oxidoreductase, N-terminal domain

Domain ID domain_id	1b4nC02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	569 — Aldehyde Ferredoxin Oxidoreductase Protein, subunit A; domain 2
Homologous superfamily homologous superfamily	10 — Aldehyde Ferredoxin Oxidoreductase Protein, subunit A, domain 2

Domain ID domain_id	1b4nC03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	599 — Aldehyde Ferredoxin Oxidoreductase Protein, subunit A; domain 3
Homologous superfamily homologous superfamily	10 — Aldehyde Ferredoxin Oxidoreductase Protein, subunit A, domain 3

Domain ID domain_id	1b4nD01
Class class	3 — Alpha Beta
Architecture architecture	60 — 4-Layer Sandwich
Topology topology	9 — Aldehyde Ferredoxin Oxidoreductase; A, domain 1
Homologous superfamily homologous superfamily	10 — Aldehyde ferredoxin oxidoreductase, N-terminal domain

Domain ID domain_id	1b4nD02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	569 — Aldehyde Ferredoxin Oxidoreductase Protein, subunit A; domain 2
Homologous superfamily homologous superfamily	10 — Aldehyde Ferredoxin Oxidoreductase Protein, subunit A, domain 2

Domain ID domain_id	1b4nD03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	599 — Aldehyde Ferredoxin Oxidoreductase Protein, subunit A; domain 3
Homologous superfamily homologous superfamily	10 — Aldehyde Ferredoxin Oxidoreductase Protein, subunit A, domain 3

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Unit-cell length a length_a	100.400 Å
Unit-cell length b length_b	170.500 Å
Unit-cell length c length_c	180.700 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	2.400 Å
Low-resolution limit resolution_low	30.000 Å
R factor r_factor	0.1770
R_work r_work	0.1770
R_free r_free	0.2440

FORMALDEHYDE FERREDOXIN OXIDOREDUCTASE FROM PYROCOCCUS FURIOSUS, COMPLEXED WITH GLUTARATE

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

FORMALDEHYDE FERREDOXIN OXIDOREDUCTASE

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

1b4n__assembly_1__model_1

1b4n__assembly_1__model_1 | I(q)

1b4n__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 (6)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 water

6. Fold Classification (SCOP + CATH) 20 domains

SCOP 2.08 (8 domains)

CATH v4.4 (12 domains)

7. Citations (2)

FORMALDEHYDE FERREDOXIN OXIDOREDUCTASE FROM PYROCOCCUS FURIOSUS, COMPLEXED WITH GLUTARATE

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

FORMALDEHYDE FERREDOXIN OXIDOREDUCTASE

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

1b4n__assembly_1__model_1

1b4n__assembly_1__model_1 | I(q)

1b4n__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 (6)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 water

6. Fold Classification (SCOP + CATH) 20 domains

SCOP 2.08 (8 domains)

CATH v4.4 (12 domains)

7. Citations (2)