Open Access Articles- Top Results for AP2M1


SymbolsAP2M1 ; AP50; CLAPM1; mu2
External IDsOMIM601024 MGI1298405 HomoloGene3000 GeneCards: AP2M1 Gene
RNA expression pattern
File:PBB GE AP2M1 200613 at tn.png
More reference expression data
RefSeq (mRNA)NM_001025205NM_009679
RefSeq (protein)NP_001020376NP_033809
Location (UCSC)Chr 3:
183.89 – 183.9 Mb
Chr 16:
20.54 – 20.54 Mb
PubMed search[1][2]

AP-2 complex subunit mu is a protein that in humans is encoded by the AP2M1 gene.[1]

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.[2]


AP2M1 has been shown to interact with CTLA-4[3][4] and Alpha-1B adrenergic receptor.[5]


  1. ^ Druck T, Gu Y, Prabhala G, Cannizzaro LA, Park SH, Huebner K, Keen JH (April 1996). "Chromosome localization of human genes for clathrin adaptor polypeptides AP2 beta and AP50 and the clathrin-binding protein, VCP". Genomics 30 (1): 94–95. PMID 8595912. doi:10.1006/geno.1995.0016. 
  2. ^ "Entrez Gene: AP2M1 adaptor-related protein complex 2, mu 1 subunit". 
  3. ^ Follows, E R; McPheat J C; Minshull C; Moore N C; Pauptit R A; Rowsell S; Stacey C L; Stanway J J; Taylor I W; Abbott W M (October 2001). "Study of the interaction of the medium chain mu 2 subunit of the clathrin-associated adapter protein complex 2 with cytotoxic T-lymphocyte antigen 4 and CD28". Biochem. J. (England) 359 (Pt 2): 427–34. ISSN 0264-6021. PMC 1222163. PMID 11583591. doi:10.1042/0264-6021:3590427. 
  4. ^ Chuang, E; Alegre M L; Duckett C S; Noel P J; Vander Heiden M G; Thompson C B (July 1997). "Interaction of CTLA-4 with the clathrin-associated protein AP50 results in ligand-independent endocytosis that limits cell surface expression". J. Immunol. (UNITED STATES) 159 (1): 144–51. ISSN 0022-1767. PMID 9200449. 
  5. ^ Diviani, Dario; Lattion Anne-Laure; Abuin Liliane; Staub Olivier; Cotecchia Susanna (May 2003). "The adaptor complex 2 directly interacts with the alpha 1b-adrenergic receptor and plays a role in receptor endocytosis". J. Biol. Chem. (United States) 278 (21): 19331–19340. ISSN 0021-9258. PMID 12644451. doi:10.1074/jbc.M302110200. 

Further reading


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