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1l1y

The Crystal Structure and Catalytic Mechanism of Cellobiohydrolase CelS, the Major Enzymatic Component of the Clostridium thermocellum cellulosome

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

cellobiohydrolase

Clostridium thermocellum

UniProt P38686

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 1 beta-D-glucopyranose-(1-4)-beta-D-glucopyranose × 1 water × 1 Consistent with protein count
2 Other combination Monomer Protein 1 其他Polymer 1 beta-D-glucopyranose-(1-4)-beta-D-glucopyranose × 1 water × 1 Consistent with protein count
3 Other combination Monomer Protein 1 其他Polymer 1 beta-D-glucopyranose-(1-4)-beta-D-glucopyranose × 1 water × 1 Consistent with protein count
4 Other combination Monomer Protein 1 其他Polymer 1 beta-D-glucopyranose-(1-4)-beta-D-glucopyranose × 1 water × 1 Consistent with protein count
5 Other combination Monomer Protein 1 其他Polymer 1 beta-D-glucopyranose-(1-4)-beta-D-glucopyranose × 1 water × 1 Consistent with protein count
6 Other combination Monomer Protein 1 其他Polymer 1 beta-D-glucopyranose-(1-4)-beta-D-glucopyranose × 1 water × 1 Consistent with protein count

Other States of the Same Protein in the Database

Monomer
1daq 1dav

2 assemblies

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1l1y 1l1y 1l1y 1l1y 1l1y 1l1y 1l2a 1l2a 1l2a 1l2a 1l2a 1l2a

12 assemblies

View Construct and Data Evidence
UniProt name GUNS_CLOTM
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–678； UniProt 1–678 Author chain B； PDBConstruct 1–678； UniProt 1–678 Author chain C； PDBConstruct 1–678； UniProt 1–678 Author chain D； PDBConstruct 1–678； UniProt 1–678 Author chain E； PDBConstruct 1–678； UniProt 1–678 Author chain F； PDBConstruct 1–678； UniProt 1–678

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_id1l1y
Deposition date deposition_date2002-02-20
Structure title titleThe Crystal Structure and Catalytic Mechanism of Cellobiohydrolase CelS, the Major Enzymatic Component of the Clostridium thermocellum cellulosome
Keywords keywordsalpha/alpha barrel, 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.

1l1y__assembly_1__model_1

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

Download this curve (.dat)

1l1y__assembly_1__model_1 | I(q)

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

1l1y__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）24.52 Å
Rg (electron density)23.29 Å
Total Rg24.24 Å
Atom count5125
Residues642
Excluded volume90011 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1l1y__assembly_1__model_1 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 1l1y__assembly_2__model_1 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
3 1 1l1y__assembly_3__model_1 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
4 1 1l1y__assembly_4__model_1 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
5 1 1l1y__assembly_5__model_1 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
6 1 1l1y__assembly_6__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 (3)

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6. Fold Classification (SCOP + CATH) 24 domains

SCOP 2.08 (6 domains)

Domain ID domain_idd1l1ya_
Class classa — All alpha proteins
Fold Fold folda.102 — alpha/alpha toroid
Superfamily Superfamily superfamilya.102.1 — Six-hairpin glycosidases
Family Family familya.102.1.2 — Cellulases catalytic domain
Domain ID domain_idd1l1yb_
Class classa — All alpha proteins
Fold Fold folda.102 — alpha/alpha toroid
Superfamily Superfamily superfamilya.102.1 — Six-hairpin glycosidases
Family Family familya.102.1.2 — Cellulases catalytic domain
Domain ID domain_idd1l1yc_
Class classa — All alpha proteins
Fold Fold folda.102 — alpha/alpha toroid
Superfamily Superfamily superfamilya.102.1 — Six-hairpin glycosidases
Family Family familya.102.1.2 — Cellulases catalytic domain
Domain ID domain_idd1l1yd_
Class classa — All alpha proteins
Fold Fold folda.102 — alpha/alpha toroid
Superfamily Superfamily superfamilya.102.1 — Six-hairpin glycosidases
Family Family familya.102.1.2 — Cellulases catalytic domain
Domain ID domain_idd1l1ye_
Class classa — All alpha proteins
Fold Fold folda.102 — alpha/alpha toroid
Superfamily Superfamily superfamilya.102.1 — Six-hairpin glycosidases
Family Family familya.102.1.2 — Cellulases catalytic domain
Domain ID domain_idd1l1yf_
Class classa — All alpha proteins
Fold Fold folda.102 — alpha/alpha toroid
Superfamily Superfamily superfamilya.102.1 — Six-hairpin glycosidases
Family Family familya.102.1.2 — Cellulases catalytic domain

CATH v4.4 (18 domains)

Domain ID domain_id1l1yA01
Class class1 — Mainly Alpha
Architecture architecture50 — Alpha/alpha barrel
Topology topology10 — Glycosyltransferase
Homologous superfamily homologous superfamily10 —
Domain ID domain_id1l1yA02
Class class2 — Mainly Beta
Architecture architecture170 — Beta Complex
Topology topology160 — Endo-1,4-beta-glucanase f; domain 2
Homologous superfamily homologous superfamily10 — Endo-1,4-beta-glucanase f. Domain 2
Domain ID domain_id1l1yA03
Class class4 — Few Secondary Structures
Architecture architecture10 — Irregular
Topology topology870 — Endo-1,4-beta-glucanase f; domain 3
Homologous superfamily homologous superfamily10 — Endo-1,4-beta-glucanase f. Domain 3
Domain ID domain_id1l1yB01
Class class1 — Mainly Alpha
Architecture architecture50 — Alpha/alpha barrel
Topology topology10 — Glycosyltransferase
Homologous superfamily homologous superfamily10 —
Domain ID domain_id1l1yB02
Class class2 — Mainly Beta
Architecture architecture170 — Beta Complex
Topology topology160 — Endo-1,4-beta-glucanase f; domain 2
Homologous superfamily homologous superfamily10 — Endo-1,4-beta-glucanase f. Domain 2
Domain ID domain_id1l1yB03
Class class4 — Few Secondary Structures
Architecture architecture10 — Irregular
Topology topology870 — Endo-1,4-beta-glucanase f; domain 3
Homologous superfamily homologous superfamily10 — Endo-1,4-beta-glucanase f. Domain 3
Domain ID domain_id1l1yC01
Class class1 — Mainly Alpha
Architecture architecture50 — Alpha/alpha barrel
Topology topology10 — Glycosyltransferase
Homologous superfamily homologous superfamily10 —
Domain ID domain_id1l1yC02
Class class2 — Mainly Beta
Architecture architecture170 — Beta Complex
Topology topology160 — Endo-1,4-beta-glucanase f; domain 2
Homologous superfamily homologous superfamily10 — Endo-1,4-beta-glucanase f. Domain 2
Domain ID domain_id1l1yC03
Class class4 — Few Secondary Structures
Architecture architecture10 — Irregular
Topology topology870 — Endo-1,4-beta-glucanase f; domain 3
Homologous superfamily homologous superfamily10 — Endo-1,4-beta-glucanase f. Domain 3
Domain ID domain_id1l1yD01
Class class1 — Mainly Alpha
Architecture architecture50 — Alpha/alpha barrel
Topology topology10 — Glycosyltransferase
Homologous superfamily homologous superfamily10 —
Domain ID domain_id1l1yD02
Class class2 — Mainly Beta
Architecture architecture170 — Beta Complex
Topology topology160 — Endo-1,4-beta-glucanase f; domain 2
Homologous superfamily homologous superfamily10 — Endo-1,4-beta-glucanase f. Domain 2
Domain ID domain_id1l1yD03
Class class4 — Few Secondary Structures
Architecture architecture10 — Irregular
Topology topology870 — Endo-1,4-beta-glucanase f; domain 3
Homologous superfamily homologous superfamily10 — Endo-1,4-beta-glucanase f. Domain 3
Domain ID domain_id1l1yE01
Class class1 — Mainly Alpha
Architecture architecture50 — Alpha/alpha barrel
Topology topology10 — Glycosyltransferase
Homologous superfamily homologous superfamily10 —
Domain ID domain_id1l1yE02
Class class2 — Mainly Beta
Architecture architecture170 — Beta Complex
Topology topology160 — Endo-1,4-beta-glucanase f; domain 2
Homologous superfamily homologous superfamily10 — Endo-1,4-beta-glucanase f. Domain 2
Domain ID domain_id1l1yE03
Class class4 — Few Secondary Structures
Architecture architecture10 — Irregular
Topology topology870 — Endo-1,4-beta-glucanase f; domain 3
Homologous superfamily homologous superfamily10 — Endo-1,4-beta-glucanase f. Domain 3
Domain ID domain_id1l1yF01
Class class1 — Mainly Alpha
Architecture architecture50 — Alpha/alpha barrel
Topology topology10 — Glycosyltransferase
Homologous superfamily homologous superfamily10 —
Domain ID domain_id1l1yF02
Class class2 — Mainly Beta
Architecture architecture170 — Beta Complex
Topology topology160 — Endo-1,4-beta-glucanase f; domain 2
Homologous superfamily homologous superfamily10 — Endo-1,4-beta-glucanase f. Domain 2
Domain ID domain_id1l1yF03
Class class4 — Few Secondary Structures
Architecture architecture10 — Irregular
Topology topology870 — Endo-1,4-beta-glucanase f; domain 3
Homologous superfamily homologous superfamily10 — Endo-1,4-beta-glucanase f. Domain 3
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7. Citations (1)