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Crystal Structure Analysis of Triple (T47M/Y164E/T328N)/maltose of Bacillus cereus Beta-Amylase at pH 6.5

Source organism: Bacillus cereus
Biochemical function: starch binding
Biological process: polysaccharide metabolic process
Cellular component: not assigned

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EC 3.2.1.2: Beta-amylase

Reaction catalysed:
Hydrolysis of (1->4)-alpha-D-glucosidic linkages in polysaccharides so as to remove successive maltose units from the non-reducing ends of the chains
Systematic name:
4-alpha-D-glucan maltohydrolase
Alternative Name(s):
  • 1,4-alpha-D-glucan maltohydrolase
  • Beta amylase
  • Beta-amylase
  • Glycogenase
  • Saccharogen amylase

GO terms

Sequence families

Pfam Protein families (Pfam)
PF00686
Domain description: Starch binding domain
Occurring in:
  1. Beta-amylase
The deposited structure of PDB entry 1vep contains 1 copy of Pfam domain PF00686 (Starch binding domain) in Beta-amylase. Showing 1 copy in chain A.

PF01373
Domain description: Glycosyl hydrolase family 14
Occurring in:
  1. Beta-amylase
The deposited structure of PDB entry 1vep contains 1 copy of Pfam domain PF01373 (Glycosyl hydrolase family 14) in Beta-amylase. Showing 1 copy in chain A.

InterPro InterPro annotations
IPR001554
Domain description: Glycoside hydrolase, family 14
Occurring in:
  1. Beta-amylase
IPR000125
Domain description: Glycoside hydrolase, family 14A, bacterial
Occurring in:
  1. Beta-amylase
IPR002044
Domain description: Carbohydrate binding module family 20
Occurring in:
  1. Beta-amylase
IPR018238
Domain description: Glycoside hydrolase, family 14, conserved site
Occurring in:
  1. Beta-amylase
IPR034835
Domain description: Beta-amylase, CBM20 domain
Occurring in:
  1. Beta-amylase
IPR013783
Domain description: Immunoglobulin-like fold
Occurring in:
  1. Beta-amylase
IPR017853
Domain description: Glycoside hydrolase superfamily
Occurring in:
  1. Beta-amylase

Structure domains

CATH CATH domains
2.60.40.10
Class: Mainly Beta
Architecture: Sandwich
Topology: Immunoglobulin-like
Homology: Immunoglobulins
Occurring in:
  1. Beta-amylase
The deposited structure of PDB entry 1vep contains 1 copy of CATH domain 2.60.40.10 (Immunoglobulin-like) in Beta-amylase. 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. Beta-amylase
The deposited structure of PDB entry 1vep contains 1 copy of CATH domain 3.20.20.80 (TIM Barrel) in Beta-amylase. Showing 1 copy in chain A.
SCOP SCOP annotations
49453
Class: All beta proteins
Fold: Prealbumin-like
Superfamily: Starch-binding domain-like
Occurring in:
  1. Beta-amylase
The deposited structure of PDB entry 1vep contains 1 copy of SCOP domain 49453 (Starch-binding domain) in Beta-amylase. Showing 1 copy in chain A.
51446
Class: Alpha and beta proteins (a/b)
Fold: TIM beta/alpha-barrel
Superfamily: (Trans)glycosidases
Occurring in:
  1. Beta-amylase
The deposited structure of PDB entry 1vep contains 1 copy of SCOP domain 51446 (Amylase, catalytic domain) in Beta-amylase. Showing 1 copy in chain A.

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