› 3vho

X-ray diffraction
1.93Å resolution

Y61-gg insertion mutant of Tm-Cellulase 12A

Released:
DOI: 10.2210/pdb3vho/pdb
PDB entry 3vho coloured by chain, front view.
PDB entry 3vho coloured by chain, side view.
PDB entry 3vho coloured by chain, top view.
Source organism: Thermotoga maritima
Primary publication:
Enhanced activity of Thermotoga maritima cellulase 12A by mutating a unique surface loop.
Cheng YS, Ko TP, Huang JW, Wu TH, Lin CY, Luo W, Li Q, Ma Y, Huang CH, Wang AH, Liu JR, Guo RT
Appl Microbiol Biotechnol 95 661-9 (2012)
PMID: 22170108

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
Sequence domains:

Structure analysis Details

Assembly composition:
monomeric (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-178747 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Endo-1,4-beta-glucanase Chains: A, B
Molecule details ›
Chains: A, B
Length: 266 amino acids
Theoretical weight: 30.73 KDa
Source organism: Thermotoga maritima
Expression system: Escherichia coli
UniProt:
  • Canonical: Q60032 (Residues: 1-61, 62-257; Coverage: 100%)
Gene name: celA
Sequence domains: Glycosyl hydrolase family 12
Structure domains: Jelly Rolls

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: NSRRC BEAMLINE BL13B1
Spacegroup: P212121
Unit cell:
a: 45.691Å b: 74.333Å c: 168.946Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.178 0.175 0.216
Expression system: Escherichia coli

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Citations

4 review citations

Defying the activity-stability trade-off in enzymes: taking advantage of entropy to enhance activity and thermostability.
Siddiqui KS. (2017)
3 more