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1itz

Maize Transketolase in complex with TPP

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

Transketolase

Zea mays

UniProt Q7SIC9

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein homooligomer Homooligomer Protein 2 MAGNESIUM ION × 2 THIAMINE DIPHOSPHATE × 2 water × 2 Consistent with protein count
2 Protein homooligomer Homooligomer Protein 2 MAGNESIUM ION × 2 THIAMINE DIPHOSPHATE × 2 water × 2 Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer
1itz 1itz

2 assemblies

Homotetramer

None

Other homooligomers
8ci0

1 assemblies

Heteromeric or nucleic-acid complex

None

View Construct and Data Evidence
UniProt name Q7SIC9_MAIZE
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–675； UniProt 1–675 Author chain B； PDBConstruct 1–675； UniProt 1–675 Author chain C； PDBConstruct 1–675； UniProt 1–675

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_id1itz
Deposition date deposition_date2002-02-15
Structure title titleMaize Transketolase in complex with TPP
Keywords keywordsCalvin cycle, Transketolase, Zea mays, Cofactor, Thiamine pyrophosphate, Plant, TRANSFERASE; TRANSFERASE
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.

1itz__assembly_1__model_1

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

Download this curve (.dat)

1itz__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.

1itz__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）31.97 Å
Rg (electron density)31.11 Å
Total Rg31.70 Å
Atom count10218
Residues1332
Excluded volume180820 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1itz__assembly_1__model_1 dimeric （2） Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 1itz__assembly_2__model_1 dimeric （2） 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)

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6. Fold Classification (SCOP + CATH) 18 domains

SCOP 2.08 (9 domains)

Domain ID domain_idd1itza1
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.36.1.10 — TK-like PP module
Domain ID domain_idd1itza2
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.36.1.6 — TK-like Pyr module
Domain ID domain_idd1itza3
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.48.1.1 — Transketolase C-terminal domain-like
Domain ID domain_idd1itzb1
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.36.1.10 — TK-like PP module
Domain ID domain_idd1itzb2
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.36.1.6 — TK-like Pyr module
Domain ID domain_idd1itzb3
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.48.1.1 — Transketolase C-terminal domain-like
Domain ID domain_idd1itzc1
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.36.1.10 — TK-like PP module
Domain ID domain_idd1itzc2
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.36.1.6 — TK-like Pyr module
Domain ID domain_idd1itzc3
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.48.1.1 — Transketolase C-terminal domain-like

CATH v4.4 (9 domains)

Domain ID domain_id1itzA01
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_id1itzA02
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_id1itzA03
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily920 —
Domain ID domain_id1itzB01
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_id1itzB02
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_id1itzB03
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily920 —
Domain ID domain_id1itzC01
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_id1itzC02
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_id1itzC03
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)