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1k85

Solution structure of the fibronectin type III domain from Bacillus circulans WL-12 Chitinase A1.

Method: SOLUTION NMR
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1. Protein Identity and Related Structures Protein Identity & Related Structures

CHITINASE A1

Bacillus circulans

UniProt P20533

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein monomer Monomer Protein 1 No other associated polymer Consistent with protein count

Other States of the Same Protein in the Database

Monomer
1ed7 1itx 1k85

3 assemblies

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex

None

View Construct and Data Evidence
UniProt name CHIA1_BACCI
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 3–88； UniProt 559–644

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_id1k85
Deposition date deposition_date2001-10-23
Structure title titleSolution structure of the fibronectin type III domain from Bacillus circulans WL-12 Chitinase A1.
Keywords keywordsfibronectin type III domain, chitinase, chitin binding domain, carbohydrase, horizontal gene transfer, HYDROLASE; HYDROLASE
Experimental Method methodSOLUTION NMR
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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.

1k85__assembly_1__model_4

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

Download this curve (.dat)

1k85__assembly_1__model_4 | I(q)

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

1k85__assembly_1__model_4 | 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）14.18 Å
Rg (electron density)13.03 Å
Total Rg14.27 Å
Atom count1208
Residues88
Excluded volume10735 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1k85__assembly_1__model_1 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 2 1k85__assembly_1__model_2 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 3 1k85__assembly_1__model_3 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 4 1k85__assembly_1__model_4 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 5 1k85__assembly_1__model_5 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 6 1k85__assembly_1__model_6 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 7 1k85__assembly_1__model_7 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 8 1k85__assembly_1__model_8 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 9 1k85__assembly_1__model_9 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 10 1k85__assembly_1__model_10 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 11 1k85__assembly_1__model_11 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 12 1k85__assembly_1__model_12 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 13 1k85__assembly_1__model_13 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 14 1k85__assembly_1__model_14 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 15 1k85__assembly_1__model_15 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 16 1k85__assembly_1__model_16 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 17 1k85__assembly_1__model_17 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 18 1k85__assembly_1__model_18 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 19 1k85__assembly_1__model_19 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 20 1k85__assembly_1__model_20 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 21 1k85__assembly_1__model_21 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 22 1k85__assembly_1__model_22 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 23 1k85__assembly_1__model_23 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 24 1k85__assembly_1__model_24 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 25 1k85__assembly_1__model_25 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 26 1k85__assembly_1__model_26 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 27 1k85__assembly_1__model_27 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 28 1k85__assembly_1__model_28 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 29 1k85__assembly_1__model_29 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 30 1k85__assembly_1__model_30 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 (1)

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6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd1k85a1
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.2 — Fibronectin type III
Family Family familyb.1.2.1 — Fibronectin type III
Domain ID domain_idd1k85a2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags

CATH v4.4 (1 domains)

Domain ID domain_id1k85A00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
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7. Citations (1)