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1sb3

Structure of 4-hydroxybenzoyl-CoA reductase from Thauera aromatica

Method: X-RAY DIFFRACTION
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1. Protein Identity and Related Structures Protein Identity & Related Structures

4-hydroxybenzoyl-CoA reductase alpha subunit

OrganismNot specified

UniProt O33819

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 6 4-hydroxybenzoyl-CoA reductase beta subunit × 2 （O33820） 4-hydroxybenzoyl-CoA reductase gamma subunit × 2 （O33818） (MOLYBDOPTERIN-CYTOSINE DINUCLEOTIDE-S,S)-DIOXO-AQUA-MOLYBDENUM(V) × 2 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID × 1 FLAVIN-ADENINE DINUCLEOTIDE × 2 IRON/SULFUR CLUSTER × 2 FE2/S2 (INORGANIC) CLUSTER × 4 SULFATE ION × 2 water × 6 Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1rm6 1sb3

2 assemblies

View Construct and Data Evidence
UniProt name HCRA_THAAR
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–769； UniProt 1–769 Author chain D； PDBConstruct 1–769； UniProt 1–769

4-hydroxybenzoyl-CoA reductase beta subunit

OrganismNot specified

UniProt O33820

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 6 4-hydroxybenzoyl-CoA reductase alpha subunit × 2 （O33819） 4-hydroxybenzoyl-CoA reductase gamma subunit × 2 （O33818） (MOLYBDOPTERIN-CYTOSINE DINUCLEOTIDE-S,S)-DIOXO-AQUA-MOLYBDENUM(V) × 2 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID × 1 FLAVIN-ADENINE DINUCLEOTIDE × 2 IRON/SULFUR CLUSTER × 2 FE2/S2 (INORGANIC) CLUSTER × 4 SULFATE ION × 2 water × 6 Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1rm6 1sb3

2 assemblies

View Construct and Data Evidence
UniProt name HCRB_THAAR
Isoform —
PDB entities 2
Chains and sequence ranges Author chain B； PDBConstruct 1–324； UniProt 1–324 Author chain E； PDBConstruct 1–324； UniProt 1–324

4-hydroxybenzoyl-CoA reductase gamma subunit

OrganismNot specified

UniProt O33818

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 6 4-hydroxybenzoyl-CoA reductase alpha subunit × 2 （O33819） 4-hydroxybenzoyl-CoA reductase beta subunit × 2 （O33820） (MOLYBDOPTERIN-CYTOSINE DINUCLEOTIDE-S,S)-DIOXO-AQUA-MOLYBDENUM(V) × 2 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID × 1 FLAVIN-ADENINE DINUCLEOTIDE × 2 IRON/SULFUR CLUSTER × 2 FE2/S2 (INORGANIC) CLUSTER × 4 SULFATE ION × 2 water × 6 Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1rm6 1sb3

2 assemblies

View Construct and Data Evidence
UniProt name HCRC_THAAR
Isoform —
PDB entities 3
Chains and sequence ranges Author chain C； PDBConstruct 1–161； UniProt 1–161 Author chain F； PDBConstruct 1–161； UniProt 1–161

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_id1sb3
Deposition date deposition_date2004-02-10
Structure title titleStructure of 4-hydroxybenzoyl-CoA reductase from Thauera aromatica
Keywords keywordsXANTHINE OXIDASE FAMILY, dimer of heterotrimers, (A, B, C)2, OXIDOREDUCTASE; OXIDOREDUCTASE
Experimental Method methodX-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.

1sb3__assembly_1__model_1

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

Download this curve (.dat)

1sb3__assembly_1__model_1 | I(q)

10-2 10-1 106 107 108 109 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

1sb3__assembly_1__model_1 | P(r) · Pending

The new assembly/model P(r) has not been calculated yet This placeholder does not display legacy data r (Angstrom) P(r)
P(r) will be calculated and displayed separately for the same assembly/model.
Rg（Guinier）42.75 Å
Rg (electron density)42.68 Å
Total Rg42.76 Å
Atom count18855
Residues2485
Excluded volume336230 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1sb3__assembly_1__model_1 hexameric （6） 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 (10)

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6. Fold Classification (SCOP + CATH) 28 domains

SCOP 2.08 (12 domains)

Domain ID domain_idd1sb3a1
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.41 — alpha/beta-Hammerhead
Superfamily Superfamily superfamilyd.41.1 — CO dehydrogenase molybdoprotein N-domain-like
Family Family familyd.41.1.1 — CO dehydrogenase molybdoprotein N-domain-like
Domain ID domain_idd1sb3a2
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.133 — Molybdenum cofactor-binding domain
Superfamily Superfamily superfamilyd.133.1 — Molybdenum cofactor-binding domain
Family Family familyd.133.1.1 — Molybdenum cofactor-binding domain
Domain ID domain_idd1sb3b1
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.87 — CO dehydrogenase flavoprotein C-domain-like
Superfamily Superfamily superfamilyd.87.2 — CO dehydrogenase flavoprotein C-terminal domain-like
Family Family familyd.87.2.1 — CO dehydrogenase flavoprotein C-terminal domain-like
Domain ID domain_idd1sb3b2
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.145 — FAD-binding/transporter-associated domain-like
Superfamily Superfamily superfamilyd.145.1 — FAD-binding/transporter-associated domain-like
Family Family familyd.145.1.3 — CO dehydrogenase flavoprotein N-terminal domain-like
Domain ID domain_idd1sb3c1
Class classa — All alpha proteins
Fold Fold folda.56 — CO dehydrogenase ISP C-domain like
Superfamily Superfamily superfamilya.56.1 — CO dehydrogenase ISP C-domain like
Family Family familya.56.1.1 — CO dehydrogenase ISP C-domain like
Domain ID domain_idd1sb3c2
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.15 — beta-Grasp (ubiquitin-like)
Superfamily Superfamily superfamilyd.15.4 — 2Fe-2S ferredoxin-like
Family Family familyd.15.4.2 — 2Fe-2S ferredoxin domains from multidomain proteins
Domain ID domain_idd1sb3d1
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.41 — alpha/beta-Hammerhead
Superfamily Superfamily superfamilyd.41.1 — CO dehydrogenase molybdoprotein N-domain-like
Family Family familyd.41.1.1 — CO dehydrogenase molybdoprotein N-domain-like
Domain ID domain_idd1sb3d2
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.133 — Molybdenum cofactor-binding domain
Superfamily Superfamily superfamilyd.133.1 — Molybdenum cofactor-binding domain
Family Family familyd.133.1.1 — Molybdenum cofactor-binding domain
Domain ID domain_idd1sb3e1
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.87 — CO dehydrogenase flavoprotein C-domain-like
Superfamily Superfamily superfamilyd.87.2 — CO dehydrogenase flavoprotein C-terminal domain-like
Family Family familyd.87.2.1 — CO dehydrogenase flavoprotein C-terminal domain-like
Domain ID domain_idd1sb3e2
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.145 — FAD-binding/transporter-associated domain-like
Superfamily Superfamily superfamilyd.145.1 — FAD-binding/transporter-associated domain-like
Family Family familyd.145.1.3 — CO dehydrogenase flavoprotein N-terminal domain-like
Domain ID domain_idd1sb3f1
Class classa — All alpha proteins
Fold Fold folda.56 — CO dehydrogenase ISP C-domain like
Superfamily Superfamily superfamilya.56.1 — CO dehydrogenase ISP C-domain like
Family Family familya.56.1.1 — CO dehydrogenase ISP C-domain like
Domain ID domain_idd1sb3f2
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.15 — beta-Grasp (ubiquitin-like)
Superfamily Superfamily superfamilyd.15.4 — 2Fe-2S ferredoxin-like
Family Family familyd.15.4.2 — 2Fe-2S ferredoxin domains from multidomain proteins

CATH v4.4 (16 domains)

Domain ID domain_id1sb3A01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain
Domain ID domain_id1sb3A02
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology1170 — Aldehyde Oxidoreductase; domain 3
Homologous superfamily homologous superfamily50 — Aldehyde oxidase/xanthine dehydrogenase, a/b hammerhead
Domain ID domain_id1sb3A03
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain
Domain ID domain_id1sb3A04
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain
Domain ID domain_id1sb3A05
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain
Domain ID domain_id1sb3B02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology390 — Enolase-like; domain 1
Homologous superfamily homologous superfamily50 — CO dehydrogenase flavoprotein, C-terminal domain
Domain ID domain_id1sb3C01
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily30 — Beta-grasp domain
Domain ID domain_id1sb3C02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology150 — DNA polymerase; domain 1
Homologous superfamily homologous superfamily120 — [2Fe-2S]-binding domain
Domain ID domain_id1sb3D01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain
Domain ID domain_id1sb3D02
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology1170 — Aldehyde Oxidoreductase; domain 3
Homologous superfamily homologous superfamily50 — Aldehyde oxidase/xanthine dehydrogenase, a/b hammerhead
Domain ID domain_id1sb3D03
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain
Domain ID domain_id1sb3D04
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain
Domain ID domain_id1sb3D05
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain
Domain ID domain_id1sb3E02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology390 — Enolase-like; domain 1
Homologous superfamily homologous superfamily50 — CO dehydrogenase flavoprotein, C-terminal domain
Domain ID domain_id1sb3F01
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily30 — Beta-grasp domain
Domain ID domain_id1sb3F02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology150 — DNA polymerase; domain 1
Homologous superfamily homologous superfamily120 — [2Fe-2S]-binding domain
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7. Citations (2)