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  2. Amyloid-beta precursor protein - Wikipedia

    en.wikipedia.org/wiki/Amyloid-beta_precursor_protein

    Amyloid-beta precursor protein (APP) is an integral membrane protein expressed in many tissues and concentrated in the synapses of neurons. It functions as a cell surface receptor [ 5 ] and has been implicated as a regulator of synapse formation , [ 6 ] neural plasticity , [ 7 ] antimicrobial activity, [ 8 ] and iron export . [ 9 ]

  3. Amyloid beta - Wikipedia

    en.wikipedia.org/wiki/Amyloid_beta

    Amyloid beta (Aβ, Abeta or beta-amyloid) denotes peptides of 36–43 amino acids that are the main component of the amyloid plaques found in the brains of people with Alzheimer's disease. [2] The peptides derive from the amyloid-beta precursor protein (APP), which is cleaved by beta secretase and gamma secretase to yield Aβ in a cholesterol ...

  4. Amyloid-beta precursor protein secretase - Wikipedia

    en.wikipedia.org/wiki/Amyloid-beta_precursor...

    Processing of the amyloid-beta precursor protein. Secretases are enzymes that "snip" pieces off a longer protein that is embedded in the cell membrane. Among other roles in the cell, secretases act on the amyloid-beta precursor protein (APP) to cleave the protein into three fragments.

  5. Substrate presentation - Wikipedia

    en.wikipedia.org/wiki/Substrate_presentation

    Amyloid precursor protein (APP) is cleaved by beta and gamma secretase to yield a 40-42 amino acid peptide responsible for amyloid plaques associated with Alzheimer's disease. The secretase enzymes are regulated by substrate presentation. [4] The substrate APP is palmitoylated and moves in and out of GM1 lipid rafts in response to astrocyte ...

  6. Amyloid plaques - Wikipedia

    en.wikipedia.org/wiki/Amyloid_plaques

    Amyloid beta (Aβ) is a small protein, most often 40 or 42 amino acids in length, that is released from a longer parent protein called the Aβ-precursor protein (APP). [24] APP is produced by many types of cell in the body, but it is especially abundant in neurons. It is a single-pass transmembrane protein, passing once through cellular ...

  7. Amyloid - Wikipedia

    en.wikipedia.org/wiki/Amyloid

    To date, 37 human proteins have been found to form amyloid in pathology and be associated with well-defined diseases. [2] The International Society of Amyloidosis classifies amyloid fibrils and their associated diseases based upon associated proteins (for example ATTR is the group of diseases and associated fibrils formed by TTR). [3]

  8. Beta-secretase 2 - Wikipedia

    en.wikipedia.org/wiki/Beta-secretase_2

    Amyloid beta peptide is generated by proteolytic cleavage of amyloid precursor protein by 2 proteases, one of which is the protein encoded by this gene. This gene localizes to the 'Down critical region' of chromosome 21. The encoded protein, a member of the peptidase A1 protein family, is a type I integral membrane glycoprotein and aspartic ...

  9. APBB1 - Wikipedia

    en.wikipedia.org/wiki/APBB1

    The protein encoded by this gene is a member of the Fe65 protein family. It is an adaptor protein localized in the nucleus. It interacts with the Alzheimer's disease amyloid precursor protein (APP), transcription factor CP2/LSF/LBP1 and the low-density lipoprotein receptor-related protein.

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