› 8u4a

X-ray diffraction
1.97Å resolution

Crystal Structure of BlCel9A from Glycoside Hydrolase Family 9 in Complex with Cellotriose

Released:
DOI: 10.2210/pdb8u4a/pdb
PDB entry 8u4a coloured by chain, front view.
PDB entry 8u4a coloured by chain, side view.
PDB entry 8u4a coloured by chain, top view.
Source organism: Bacillus licheniformis DSM 13 = ATCC 14580
Primary publication:
Molecular mechanism of cellulose depolymerization by the two-domain BlCel9A enzyme from the glycoside hydrolase family 9.
de Araújo EA, Cortez AA, Pellegrini VOA, Vacilotto MM, Cruz AF, Batista PR, Polikarpov I
Carbohydr Polym 329 121739 (2024)
PMID: 38286536

Function and Biology Details

Reaction catalysed: 
Endohydrolysis of (1->4)-beta-D-glucosidic linkages in cellulose, lichenin and cereal beta-D-glucans
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-239958 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecules (2 distinct):
Endoglucanase Chain: A
Molecule details ›
Chain: A
Length: 619 amino acids
Theoretical weight: 69.85 KDa
Source organism: Bacillus licheniformis DSM 13 = ATCC 14580
Expression system: Escherichia coli BL21
UniProt:
  • Canonical: Q65JI9 (Residues: 36-654; Coverage: 98%)
Gene names: BL01232, celA
Sequence domains:

Ligands and Environments

Carbohydrate polymer : NEW Components: BGC
Carbohydrate polymer
4 bound ligands:
Ligand TRS 1 x TRS
Ligand CA 2 x CA
Ligand NA 1 x NA
Ligand CL 1 x CL
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: LNLS BEAMLINE W01B-MX2
Spacegroup: C2
Unit cell:
a: 133.114Å b: 67.178Å c: 100.838Å
α: 90° β: 125° γ: 90°
R-values:
R R work R free
0.151 0.149 0.188
Expression system: Escherichia coli BL21

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