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1cqd

THE 2.1 ANGSTROM STRUCTURE OF A CYSTEINE PROTEASE WITH PROLINE SPECIFICITY FROM GINGER RHIZOME, ZINGIBER OFFICINALE

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

PROTEIN (PROTEASE II)

OrganismNot specified

UniProt P82474

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Other combination Monomer Protein 1 其他Polymer 2 beta-L-fucopyranose-(1-3)-[2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)]2-acetamido-2-deoxy-beta-D-glucopyranose × 1 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 THIOSULFATE × 1 water × 1 Consistent with protein count
2 Other combination Monomer Protein 1 其他Polymer 1 alpha-L-fucopyranose-(1-3)-[2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)]2-acetamido-2-deoxy-beta-D-glucopyranose × 1 THIOSULFATE × 1 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 water × 1 Consistent with protein count
3 Other combination Monomer Protein 1 其他Polymer 1 alpha-L-fucopyranose-(1-3)-[2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)]2-acetamido-2-deoxy-beta-D-glucopyranose × 1 THIOSULFATE × 1 water × 1 Consistent with protein count
4 Other combination Monomer Protein 1 其他Polymer 1 alpha-L-fucopyranose-(1-3)-[2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)]2-acetamido-2-deoxy-beta-D-glucopyranose × 1 THIOSULFATE × 1 water × 1 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
1cqd 1cqd 1cqd 1cqd

4 assemblies

View Construct and Data Evidence
UniProt name CPGP2_ZINOF
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–221； UniProt 1–221 Author chain B； PDBConstruct 1–221； UniProt 1–221 Author chain C； PDBConstruct 1–221； UniProt 1–221 Author chain D； PDBConstruct 1–221； UniProt 1–221

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_id1cqd
Deposition date deposition_date1999-06-15
Structure title titleTHE 2.1 ANGSTROM STRUCTURE OF A CYSTEINE PROTEASE WITH PROLINE SPECIFICITY FROM GINGER RHIZOME, ZINGIBER OFFICINALE
Keywords keywordsCYSTEINE PROTEASE, GLYCOPROTEIN, PROLINE SPECIFICITY, CARBOHYDRATE, PAPAIN FAMILY, HYDROLASE; HYDROLASE
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.

1cqd__assembly_4__model_1

Assembly 4 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1cqd__assembly_4__model_1 | I(q)

10-2 10-1 105 106 107 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

1cqd__assembly_4__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）17.81 Å
Rg (electron density)16.68 Å
Total Rg17.69 Å
Atom count1689
Residues216
Excluded volume29459 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1cqd__assembly_1__model_1 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 1cqd__assembly_2__model_1 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
3 1 1cqd__assembly_3__model_1 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
4 1 1cqd__assembly_4__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 (7)

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd1cqda_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.3 — Cysteine proteinases
Superfamily Superfamily superfamilyd.3.1 — Cysteine proteinases
Family Family familyd.3.1.1 — Papain-like
Domain ID domain_idd1cqdb_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.3 — Cysteine proteinases
Superfamily Superfamily superfamilyd.3.1 — Cysteine proteinases
Family Family familyd.3.1.1 — Papain-like
Domain ID domain_idd1cqdc_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.3 — Cysteine proteinases
Superfamily Superfamily superfamilyd.3.1 — Cysteine proteinases
Family Family familyd.3.1.1 — Papain-like
Domain ID domain_idd1cqdd_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.3 — Cysteine proteinases
Superfamily Superfamily superfamilyd.3.1 — Cysteine proteinases
Family Family familyd.3.1.1 — Papain-like

CATH v4.4 (4 domains)

Domain ID domain_id1cqdA00
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology70 — Cathepsin B; Chain A
Homologous superfamily homologous superfamily10 — Cysteine proteinases
Domain ID domain_id1cqdB00
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology70 — Cathepsin B; Chain A
Homologous superfamily homologous superfamily10 — Cysteine proteinases
Domain ID domain_id1cqdC00
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology70 — Cathepsin B; Chain A
Homologous superfamily homologous superfamily10 — Cysteine proteinases
Domain ID domain_id1cqdD00
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology70 — Cathepsin B; Chain A
Homologous superfamily homologous superfamily10 — Cysteine proteinases
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7. Citations (1)