Protein Domain : IPR009119

Type:  Family Name:  Beta-secretase
Description:  One of the major neuropathological hallmarks of Alzheimer's disease (AD) is the progressive formation in the brain of insoluble amyloid plaques and vascular deposits consisting of beta-amyloid protein (beta-APP) [].Production of beta-APP requires proteolytic cleavage of the large type-1 transmembrane (TM) protein amyloid precursor protein (APP) []. This processis performed by a variety of enzymes known as secretases. To initiate beta-APP formation, beta-secretase cleaves APP to release a soluble N-terminal fragment (APPsBeta) and a C-terminal fragment that remains membrane bound. This fragment is subsequently cleaved by gamma-secretase to liberate beta-APP.Several independent studies identified a novel TM aspartic protease as the major beta-secretase [, , ]. This protein, termed beta-site APP cleavingenzyme 1 (BACE1), shares 64% amino acid sequence similarity with a second enzyme, termed BACE2. Together, BACE1 and BACE2 define a novel family of aspartyl proteases []. Both enzymes share significant sequence similaritywith other members of the pepsin family of aspartyl proteases and contain the two characteristic D(T/S)G(T/S) motifs that form the catalytic site.However, by contrast with other aspartyl proteases, BACE1 and BACE2 are type I TM proteins. Each protein comprises a large lumenal domain containingthe active centre, a single TM domain and a small cytoplasmic tail. Short Name:  BACE

2 Child Features

DB identifier Type Name
IPR009120 Family Beta-secretase BACE1
IPR009121 Family Beta-secretase BACE2

1 Contains

DB identifier Type Name
IPR001969 Active_site Aspartic peptidase, active site

1 Cross References

Identifier
PR01815

0 Found In

3 GO Annotations

GO Term Gene Name
GO:0004190 IPR009119
GO:0006508 IPR009119
GO:0016021 IPR009119

3 Ontology Annotations

GO Term Gene Name
GO:0004190 IPR009119
GO:0006508 IPR009119
GO:0016021 IPR009119

1 Parent Features

DB identifier Type Name
IPR001461 Family Aspartic peptidase

0 Proteins

6 Publications

First Author Title Year Journal Volume Pages PubMed ID
            2881207
            6375662
            10531052
            10656250
            10591213
            12391600