MA1-064 detects assembly polypeptide 2 (AP2) from a wide variety of mammalian sources, including human, hamster, monkey, bovine, rat, and mouse. It recognizes the products of both alpha-adaptin genes, alpha A and alpha C as well as an alternatively spliced isoform of alpha adaptin found in neurons.
MA1-064 has been successfully used in Western blot, immunofluorescence, immunocytochemistry, and immunoprecipitation procedures. By Western blot, this antibody detects an ~100 kDa doublet representing the two isoforms of alpha adaptin in rat brain (alpha C is the dominant form seen)
Microinjection of cells with MA1-064 results in variable blockade of endocytosis.
The MA1-064 immunogen is purified adaptors.
Clathrin-mediated endocytosis is the pathway by which many receptors for nutrients and hormones are internalized to be recycled or down-regulated. During formation of clathrin coated membranes, clathrin co-assembles with heterotetrameric molecules known as assembly polypeptides (APs) or adaptors which form a layer of protein coat between the clathrin lattice and the membrane.
There are two characterized adaptors AP1 and AP2. AP1 is associated with clathrin coated vesicles at the trans-Golgi network and AP2 is associated with the endocytic clathrin coated vesicles at the plasma membrane and has been shown to specifically interact with Shc and EGF receptor. AP2 is composed of four subunits, two separate ~100 kDa gene products with similar domain structures (alpha and beta adaptin) and a ~50 and ~17 kDa subunit. There are two alpha-adaptin genes, alpha A and alpha C which have a tissue specific pattern of expression.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Protein Aliases: 100 kDa coated vesicle protein A; adapter-related protein complex 2 alpha-1 subunit; adapter-related protein complex 2 subunit alpha-1; adaptin, alpha A; Adaptor protein complex AP-2 subunit alpha-1; adaptor protein complex AP-2, alpha 1 subunit; adaptor related protein complex 2, alpha 1 subunit; Adaptor-related protein complex 2 subunit alpha-1; adaptor-related protein complex 2, alpha 1 subunit; adaptor-related protein complex AP-2, alpha 1 subunit; Alpha-adaptin A; Alpha1-adaptin; AP-2 complex subunit alpha-1; Clathrin assembly protein complex 2 alpha-A large chain; clathrin-associated/assembly/adaptor protein, large, alpha 1; Plasma membrane adaptor HA2/AP2 adaptin alpha A subunit
Gene Aliases: ADTAA; AP2-ALPHA; AP2A1; BOS_17797; CLAPA1
Molecular Function: transmembrane receptor regulatory/adaptor protein