AP2M1 Antibody – Mouse Monoclonal

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. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

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: 3q28

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

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

Biological Process: epidermal growth factor receptor signaling pathway; negative regulation of epidermal growth factor receptor signaling pathway; intracellular protein transport; synaptic transmission; axon guidance; nerve growth factor receptor signaling pathway; viral reproduction; ephrin receptor signaling pathway; antigen processing and presentation of exogenous peptide antigen via MHC class II; regulation of defense response to virus by virus