Ap2m1 (AP-2 Complex Subunit mu, AP-2 mu Chain, Adapter-related Protein Complex 2 mu Subunit, Adaptor Protein Complex AP-2 Subunit mu, Clathrin Assembly Protein Complex 2 Medium Chain, Clathrin Coat Assembly Protein AP50, Clathrin Coat-associated Protein A

Component of the adaptor protein complex 2 (AP-2). Adaptor protein complexes function in protein transport via transport vesicles in different membrane traffic pathways. Adaptor protein complexes are vesicle coat components and appear to be involved in cargo selection and vesicle formation. AP-2 is involved in clathrin-dependent endocytosis in which cargo proteins are incorporated into vesicles surrrounded by clathrin (clathrin-coated vesicles, CCVs) which are destined for fusion with the early endosome. The clathrin lattice serves as a mechanical scaffold but is itself unable to bind directly to membrane components. Clathrin-associated adaptor protein (AP) complexes which can bind directly to both the clathrin lattice and to the lipid and protein components of membranes are considered to be the major clathrin adaptors contributing the CCV formation. AP-2 also serves as a cargo receptor to selectively sort the membrane proteins involved in receptor-mediated endocytosis. AP-2 seems to play a role in the recycling of synaptic vesicle membranes from the presynaptic surface. AP-2 recognizes Y-X-X-[FILMV] (Y-X-X-Phi) and [ED]-X-X-X-L-[LI] endocytosis signal motifs within the cytosolic tails of transmembrane cargo molecules. AP-2 may also play a role in maintaining normal post-endocytic trafficking through the ARF6-regulated, non-clathrin pathway. The AP-2 mu subunit binds to transmembrane cargo proteins; it recognizes the Y-X-X-Phi motifs. The surface region interacting with to the Y-X-X-Phi motif is inaccessible in cytosolic AP-2, but becomes accessible through a conformational change following phosphorylation of AP-2 mu subunit at 'Tyr-156' in membrane-associated AP-2. The membrane-specific phosphorylation event appears to involve assembled clathrin which activates the AP-2 mu kinase AAK1.\n\nApplications:\nSuitable for use in ELISA and Western Blot. Other applications not tested.\n\nRecommended Dilution:\nOptimal dilutions to be determined by the researcher.\n\nStorage and Stability:\nMay be stored at 4 degrees C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Aliquots are stable for 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Labeled with horseradish peroxidase (HRP). Sodium azide is a potent inhibitor of peroxidase and should not be added to HRP conjugates. HRP conjugates are sensitive to light.

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SPECIFICATIONS

Catalog Number

029029

Size

50ug

Applications

ELISA, WB

Hosts

Rabbit

Reactivities

Hum

Form

Supplied as a liquid in 0.01M PBS, PH 7.4, 0.03% Proclin 300, 50% glycerol. Labeled with horseradish peroxidase (HRP).

P Type

Pab

Purity

Purified by ammonium sulfate precipitation.

Isotype

IgG

References

1. \"Prediction of the coding sequences of unidentified human genes. III. The coding sequences of 40 new genes (KIAA0081-KIAA0120) deduced by analysis of cDNA clones from human cell line KG-1.\"Nagase T., Miyajima N., Tanaka A., Sazuka T., Seki N., Sato S., Tabata S., Ishikawa K., Kawarabayasi Y., Kotani H., Nomura N.DNA Res. 2:37-43 (1995). 2. \"The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).\"The MGC Project TeamGenome Res. 14:2121-2127 (2004). 3. \"Subunit H of the V-ATPase binds to the medium chain of adaptor protein complex 2 and connects Nef to the endocytic machinery.\"Geyer M., Yu H., Mandic R., Linnemann T., Zheng Y.-H., Fackler O.T., Peterlin B.M.J. Biol. Chem. 277:28521-28529 (2002).

Additional Info

Recognizes human Ap2m1.