1ik6

3D structure of the E1beta subunit of pyruvate dehydrogenase from the archeon Pyrobaculum aerophilum

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

pyruvate dehydrogenase

Pyrobaculum aerophilum

UniProt Q8ZUR7

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein homooligomer Homooligomer Protein 4 water × 4 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name Q8ZUR7_PYRAE
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 50–369; UniProt 1–320

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_id1ik6
Deposition date deposition_date2001-05-02
Structure title title3D structure of the E1beta subunit of pyruvate dehydrogenase from the archeon Pyrobaculum aerophilum
Keywords keywordse1beta, pyruvate dehydrogenase, tetramer, gxxxg, 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.

1ik6__assembly_1__model_1

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

Download this curve (.dat)

1ik6__assembly_1__model_1 | I(q)

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

1ik6__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)35.59 Å
Rg (electron density)34.78 Å
Total Rg35.39 Å
Atom count8388
Residues1136
Excluded volume151190 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1ik6__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 (2)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd1ik6a1
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.36 — Thiamin diphosphate-binding fold (THDP-binding)
Superfamily Superfamily superfamilyc.36.1 — Thiamin diphosphate-binding fold (THDP-binding)
Family Family familyc.36.1.7 — Branched-chain alpha-keto acid dehydrogenase Pyr module
Domain ID domain_idd1ik6a2
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.48 — TK C-terminal domain-like
Superfamily Superfamily superfamilyc.48.1 — TK C-terminal domain-like
Family Family familyc.48.1.2 — Branched-chain alpha-keto acid dehydrogenase beta-subunit, C-terminal-domain

CATH v4.4 (2 domains)

Domain ID domain_id1ik6A01
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily970 — Thiamin diphosphate (ThDP)-binding fold, Pyr/PP domains
Domain ID domain_id1ik6A02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily920 —
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7. Citations (1)