Amyloid Precursor Protein (APP) or Amyloid beta precursor protein functions as a cell surface kinesin I membrane receptor, mediating the axonal transport of beta-secretase and presenilin 1. APP is important for neurite growth, neuronal adhesion and axonogenesis. APP is a 100-140 kDa transmembrane glycoprotein that exists as several isoforms resulting from alternative splicing. Proteolytic cleavage of APP by ß- and ?-secretases results in the generation of beta amyloid, which is the primary component of senile plaques. Senile plaques are one of the major histopathologic features of Alzheimer's disease. Abnormal regulation and processing of APP also plays a role in Down's syndrome, early onset familial Alzheimer's disease, and cerebral hemorrhage.
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Protein Aliases: Abeta40; Abeta42; ABPP; AICD-50; AICD-57; AICD-59; Alpha-CTF; Alpha-secretase C-terminal fragment; Alzheimer disease amyloid protein; Amyloid b precursor protein; amyloid beta (A4) precursor protein; Amyloid intracellular domain 50; Amyloid intracellular domain 57; Amyloid intracellular domain 59; Amyloid precursor protein; Amyloid β precursor protein; Amyloid-beta A4 protein; Amyloid-beta precursor protein; Amyloid-beta protein 40; Amyloid-beta protein 42; APP; APPI; beta-amyloid peptide; beta-amyloid peptide(1-40); beta-amyloid peptide(1-42); beta-amyloid precursor protein; Beta-APP40; Beta-APP42; Beta-CTF; Beta-secretase C-terminal fragment; C31; C80; C83; C99; Cerebral vascular amyloid peptide; CVAP; Gamma-CTF(50); Gamma-CTF(57); Gamma-CTF(59); Gamma-secretase C-terminal fragment 50; Gamma-secretase C-terminal fragment 57; Gamma-secretase C-terminal fragment 59; N-APP; P3(40); P3(42); Pan-Abeta; peptidase nexin-II; PN-II; PreA4; Protease nexin-II; S-APP-alpha; S-APP-beta; Soluble APP-alpha; Soluble APP-beta; testicular tissue protein Li 2
Gene Aliases: A4; AAA; ABETA; ABPP; AD1; APP; APPI; CTFgamma; CVAP; PN-II; PN2
UniProt ID: (Human) P05067
Entrez Gene ID: (Human) 351
Molecular Function: protease inhibitor