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Crystal structure of a family 51 alpha-L-arabinofuranosidase in complex with 4-nitrophenyl-Ara

Source organism: Geobacillus stearothermophilus
Biochemical function: alpha-L-arabinofuranosidase activity
Biological process: L-arabinose metabolic process
Cellular component: cytoplasm

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EC 3.2.1.55: Non-reducing end alpha-L-arabinofuranosidase

Reaction catalysed:
Hydrolysis of terminal non-reducing alpha-L-arabinofuranoside residues in alpha-L-arabinosides
Systematic name:
Alpha-L-arabinofuranoside non-reducing end alpha-L-arabinofuranosidase
Alternative Name(s):
  • Alpha-L-arabinanase
  • Alpha-L-arabinofuranosidase
  • Alpha-L-arabinofuranoside hydrolase
  • Alpha-L-arabinosidase
  • Alpha-arabinofuranosidase
  • Alpha-arabinosidase
  • Arabinofuranosidase
  • Arabinosidase
  • L-arabinosidase
  • Polysaccharide alpha-L-arabinofuranosidase

GO terms

Sequence family

Pfam Protein family (Pfam)
PF06964
Domain description: Alpha-L-arabinofuranosidase C-terminal domain
Occurring in:
  1. Intracellular exo-alpha-(1->5)-L-arabinofuranosidase
The deposited structure of PDB entry 1qw9 contains 2 copies of Pfam domain PF06964 (Alpha-L-arabinofuranosidase C-terminal domain) in Intracellular exo-alpha-(1->5)-L-arabinofuranosidase. Showing 1 copy in chain A.

InterPro InterPro annotations
IPR010720
Domain description: Alpha-L-arabinofuranosidase, C-terminal
Occurring in:
  1. Intracellular exo-alpha-(1->5)-L-arabinofuranosidase
IPR017853
Domain description: Glycoside hydrolase superfamily
Occurring in:
  1. Intracellular exo-alpha-(1->5)-L-arabinofuranosidase
IPR013780
Domain description: Glycosyl hydrolase, all-beta
Occurring in:
  1. Intracellular exo-alpha-(1->5)-L-arabinofuranosidase

Structure domains

CATH CATH domains
2.60.40.1180
Class: Mainly Beta
Architecture: Sandwich
Topology: Immunoglobulin-like
Homology: Golgi alpha-mannosidase II
Occurring in:
  1. Intracellular exo-alpha-(1->5)-L-arabinofuranosidase
The deposited structure of PDB entry 1qw9 contains 2 copies of CATH domain 2.60.40.1180 (Immunoglobulin-like) in Intracellular exo-alpha-(1->5)-L-arabinofuranosidase. Showing 1 copy in chain A.
3.20.20.80
Class: Alpha Beta
Architecture: Alpha-Beta Barrel
Topology: TIM Barrel
Homology: Glycosidases
Occurring in:
  1. Intracellular exo-alpha-(1->5)-L-arabinofuranosidase
The deposited structure of PDB entry 1qw9 contains 2 copies of CATH domain 3.20.20.80 (TIM Barrel) in Intracellular exo-alpha-(1->5)-L-arabinofuranosidase. Showing 1 copy in chain A.
SCOP SCOP annotations
89388
Class: All beta proteins
Fold: Glycosyl hydrolase domain
Superfamily: Glycosyl hydrolase domain
Occurring in:
  1. Intracellular exo-alpha-(1->5)-L-arabinofuranosidase
The deposited structure of PDB entry 1qw9 contains 2 copies of SCOP domain 89388 (Composite domain of glycosyl hydrolase families 5, 30, 39 and 51) in Intracellular exo-alpha-(1->5)-L-arabinofuranosidase. Showing 1 copy in chain A.
51487
Class: Alpha and beta proteins (a/b)
Fold: TIM beta/alpha-barrel
Superfamily: (Trans)glycosidases
Occurring in:
  1. Intracellular exo-alpha-(1->5)-L-arabinofuranosidase
The deposited structure of PDB entry 1qw9 contains 2 copies of SCOP domain 51487 (beta-glycanases) in Intracellular exo-alpha-(1->5)-L-arabinofuranosidase. Showing 1 copy in chain A.

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