Amyloid precursor protein


Function

Amyloid precursor protein (APP) is a transmembranal protein which is thought to regulate transcription. APP plays a role in synaptic formation and repair.[1]

Disease

APP is cleaved by β-secretase and the resulting N terminal peptide which is ca. 40 amino acid long is called hAPP β-peptide. The aggregation of the hAPP β-peptide is the cause of Alzheimer’s Disease. For detailed discussion see

Structural highlights

The extracellular region of APP contains several domains named E1 (residues 1-189) and E2 (residues 346-551). The E1 domain contains a growth factor-like or heparin-binding (residues 28-123) and Cu-binding (residues 124-189) subdomains. Additional domains are: Kunitz-type protease inhibitor (residues 287-344) and Zn-binding (residues 672-687). The Z-binding domain is involved in the oligomerizatin of APP.

3D structures of amyloid precursor protein

Amyloid precursor protein 3D structures


Human amyloid precursor protein heparin-binding domain 1mwp

Drag the structure with the mouse to rotate

ReferencesReferences

  1. Turner PR, O'Connor K, Tate WP, Abraham WC. Roles of amyloid precursor protein and its fragments in regulating neural activity, plasticity and memory. Prog Neurobiol. 2003 May;70(1):1-32. PMID:12927332

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