AP2M1 Antibody – Rabbit Polyclonal

This gene encodes a subunit of the heterotetrameric coat assembly protein complex 2 (AP2), which belongs to the adaptor complexes medium subunits family. The encoded protein is required for the activity of a vacuolar ATPase, which is responsible for proton pumping occurring in the acidification of endosomes and lysosomes. The encoded protein may also play an important role in regulating the intracellular trafficking and function of CTLA-4 protein. Three transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2015]

AP2M1: a protein of the adaptor complexes medium subunit family. A subunit of the heterotetrameric coat assembly protein complex 2 (AP2) which links clathrin to receptors in coated vesicles. Interacts with the cytoplasmic tails of membrane proteins and polyphosphoinositide-containing lipids. Is not required for clathrin-coated vesicle formation at the plasma membrane, but that it is one of several endocytic adaptors required for the uptake of certain cargo proteins. Is required for the activity of a vacuolar ATPase, which is responsible for proton pumping occurring in the acidification of endosomes and lysosomes. AP-2 is a heterotetramer composed of two large chains (alpha and beta), a medium chain (AP50) and a small chain (AP17).

Protein type: Adaptor/scaffold; Vesicle

Chromosomal Location of Human Ortholog: 3q27.1

Cellular Component: AP-2 adaptor complex; cytosol; lysosomal membrane; plasma membrane

Molecular Function: low-density lipoprotein receptor binding; protein binding; signal sequence binding; transporter activity

Biological Process: antigen processing and presentation of exogenous peptide antigen via MHC class II; ephrin receptor signaling pathway; microtubule-based movement; negative regulation of epidermal growth factor receptor signaling pathway; regulation of defense response to virus by virus; Wnt receptor signaling pathway, planar cell polarity pathway