| Modification Notes |
Anterior pharynx defective 1 (Aph-1) is a polytopic, seven-pass membrane protein that functions as one of the four essential components in the presenilin-©-secretase enzyme complex. This enzyme complex is necessary for the intra-membrane proteolysis of several different membrane proteins, including the ∫-Amyloid precursor protein, and is involved in multiple neurodevelopmental signaling pathways. Aph-1b (anterior pharynx defective 1 homolog B) and Aph-1c (anterior pharynx defective 1 homolog C) are multi-pass membrane proteins that are thought to function as subunits of the ©-secretase complex. Consisting of 257 amino acids and existing as two alternatively spliced isoforms, Aph-1b may execute redundant functions in the cell and is implicated in neurodevelopmental disorders, such as schizophrenia. |