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ITM2B

Amyloid precursor proteins are processed by beta-secretase and gamma-secretase to produce beta-amyloid peptides which form the characteristic plaques of Alzheimer disease. This gene encodes a transmembrane protein which is processed at the C-terminus by furin or furin-like proteases to produce a small secreted peptide which inhibits the deposition of beta-amyloid. Mutations which result in extension of the C-terminal end of the encoded protein, thereby increasing the size of the secreted peptide, are associated with two neurogenerative diseases, familial British dementia and familial Danish dementia.
Protein class

Disease related genes, Human disease related genes, Potential drug targets, Transporters

Predicted location

Intracellular, Membrane, Secreted (different isoforms)

Single cell type specificity

Low cell type specificity

Immune cell specificity

Immune cell enhanced (neutrophil)

Cell line specificity

Cell line enhanced (HMC-1, RPTEC TERT1)

Interaction

Homodimer; disulfide-linked. Interacts with SPPL2A and SPPL2B. Interacts with APP. Mature BRI2 (mBRI2) interacts with the APP amyloid-beta A4 protein; the interaction occurs at the cell surface and in the endocytic compartments and enable alpha- and beta-secretase-induced APP cleavage inhibition. Mature BRI2 (mBRI2) interacts with the APP C99; the interaction occurs in the endocytic compartments and enable gamma-secretase-induced C99 cleavage inhibition. May form heterodimers with Bri23 peptide and APP amyloid-beta protein 40.

More Types Infomation

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For Research Use Only. Not For Clinical Use.

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