MPP1
55 kDa erythrocyte membrane protein is a protein that in humans is encoded by the MPP1 gene.

Palmitoylated membrane protein 1 is the prototype of a family of membrane-associated proteins termed MAGUKs (membrane-associated guanylate kinase homologs).  MAGUKs interact with the cytoskeleton and regulate cell proliferation, signaling pathways, and intracellular junctions.  Palmitoylated membrane protein 1 contains a conserved sequence, called the SH3 (src homology 3) motif, found in several other proteins that associate with the cytoskeleton and are suspected to play important roles in signal transduction.

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