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Protein AP2B1 PDB 1e42.png
Available structures
PDB Human UniProt search: PDBe RCSB
Aliases AP2B1, ADTB2, AP105B, AP2-BETA, CLAPB1, adaptor related protein complex 2 beta 1 subunit
External IDs HomoloGene: 68176 GeneCards: AP2B1
RNA expression pattern
PBB GE AP2B1 200615 s at fs.png
More reference expression data
Species Human Mouse
RefSeq (mRNA)



RefSeq (protein)



Location (UCSC) Chr 17: 35.58 – 35.73 Mb n/a
PubMed search [1] n/a
View/Edit Human

AP-2 complex subunit beta is a protein that in humans is encoded by the AP2B1 gene.[2][3][4]


The protein encoded by this gene is one of two large chain components of the assembly protein complex 2, which serves to link clathrin to receptors in coated vesicles. The encoded protein is found on the cytoplasmic face of coated vesicles in the plasma membrane. Two transcript variants encoding different isoforms have been found for this gene.[4]


AP2B1 has been shown to interact with:


  1. ^ "Human PubMed Reference:". 
  2. ^ Gallusser A, Kirchhausen T (Dec 1993). "The beta 1 and beta 2 subunits of the AP complexes are the clathrin coat assembly components". The EMBO Journal. 12 (13): 5237–44. PMC 413789Freely accessible. PMID 8262066. 
  3. ^ Druck T, Gu Y, Prabhala G, Cannizzaro LA, Park SH, Huebner K, Keen JH (Nov 1995). "Chromosome localization of human genes for clathrin adaptor polypeptides AP2 beta and AP50 and the clathrin-binding protein, VCP". Genomics. 30 (1): 94–7. doi:10.1006/geno.1995.0016. PMID 8595912. 
  4. ^ a b "Entrez Gene: AP2B1 adaptor-related protein complex 2, beta 1 subunit". 
  5. ^ a b Rual JF, Venkatesan K, Hao T, Hirozane-Kishikawa T, Dricot A, Li N, Berriz GF, Gibbons FD, Dreze M, Ayivi-Guedehoussou N, Klitgord N, Simon C, Boxem M, Milstein S, Rosenberg J, Goldberg DS, Zhang LV, Wong SL, Franklin G, Li S, Albala JS, Lim J, Fraughton C, Llamosas E, Cevik S, Bex C, Lamesch P, Sikorski RS, Vandenhaute J, Zoghbi HY, Smolyar A, Bosak S, Sequerra R, Doucette-Stamm L, Cusick ME, Hill DE, Roth FP, Vidal M (Oct 2005). "Towards a proteome-scale map of the human protein-protein interaction network". Nature. 437 (7062): 1173–8. doi:10.1038/nature04209. PMID 16189514. 
  6. ^ Laporte SA, Oakley RH, Zhang J, Holt JA, Ferguson SS, Caron MG, Barak LS (Mar 1999). "The beta2-adrenergic receptor/betaarrestin complex recruits the clathrin adaptor AP-2 during endocytosis". Proceedings of the National Academy of Sciences of the United States of America. 96 (7): 3712–7. doi:10.1073/pnas.96.7.3712. PMC 22359Freely accessible. PMID 10097102. 
  7. ^ Kim YM, Benovic JL (Aug 2002). "Differential roles of arrestin-2 interaction with clathrin and adaptor protein 2 in G protein-coupled receptor trafficking". The Journal of Biological Chemistry. 277 (34): 30760–8. doi:10.1074/jbc.M204528200. PMID 12070169. 
  8. ^ Cayrol C, Cougoule C, Wright M (Nov 2002). "The beta2-adaptin clathrin adaptor interacts with the mitotic checkpoint kinase BubR1". Biochemical and Biophysical Research Communications. 298 (5): 720–30. doi:10.1016/s0006-291x(02)02522-6. PMID 12419313. 
  9. ^ He G, Gupta S, Yi M, Michaely P, Hobbs HH, Cohen JC (Nov 2002). "ARH is a modular adaptor protein that interacts with the LDL receptor, clathrin, and AP-2". The Journal of Biological Chemistry. 277 (46): 44044–9. doi:10.1074/jbc.M208539200. PMID 12221107. 
  10. ^ Yao D, Ehrlich M, Henis YI, Leof EB (Nov 2002). "Transforming growth factor-beta receptors interact with AP2 by direct binding to beta2 subunit". Molecular Biology of the Cell. 13 (11): 4001–12. doi:10.1091/mbc.02-07-0104. PMC 133610Freely accessible. PMID 12429842. 

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