AP4B1

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Adaptor-related protein complex 4, beta 1 subunit
Identifiers
Symbols AP4B1; BETA-4
External IDs OMIM607245 MGI1337130 HomoloGene38203 GeneCards: AP4B1 Gene
Orthologs
Species Human Mouse
Entrez 10717 67489
Ensembl ENSG00000134262 ENSMUSG00000032952
UniProt Q9Y6B7 Q7TMS3
RefSeq (mRNA) NM_006594 NM_026193
RefSeq (protein) NP_006585 NP_080469
Location (UCSC) Chr 1:
114.44 – 114.45 Mb
Chr 3:
103.61 – 103.63 Mb
PubMed search [1] [2]

AP-4 complex subunit beta-1 is a protein that in humans is encoded by the AP4B1 gene.[1][2]

The heterotetrameric adaptor protein (AP) complexes sort integral membrane proteins at various stages of the endocytic and secretory pathways. AP4 is composed of 2 large chains, beta-4 (AP4B1) and epsilon-4 (AP4E1; MIM 607244), a medium chain, mu-4 (AP4M1; MIM 602296), and a small chain, sigma-4 (AP4S1; MIM 607243).[supplied by OMIM][2]

Contents

[edit] Interactions

AP4B1 has been shown to interact with AP4M1.[3]

[edit] Clinical relevance

It is currently hypothesized that AP4-complex-mediated trafficking plays a crucial role in brain development and functioning.[4]

[edit] References

  1. ^ Dell'Angelica EC, Mullins C, Bonifacino JS (Apr 1999). "AP-4, a novel protein complex related to clathrin adaptors". J Biol Chem 274 (11): 7278–85. doi:10.1074/jbc.274.11.7278. PMID 10066790. 
  2. ^ a b "Entrez Gene: AP4B1 adaptor-related protein complex 4, beta 1 subunit". http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=10717. 
  3. ^ Hirst, J; Bright N A, Rous B, Robinson M S (Aug. 1999). "Characterization of a fourth adaptor-related protein complex". Mol. Biol. Cell (UNITED STATES) 10 (8): 2787–802. ISSN 1059-1524. PMC 25515. PMID 10436028. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=25515. 
  4. ^ Abou Jamra, R; Philippe, O, Raas-Rothschild, A, Eck, SH, Graf, E, Buchert, R, Borck, G, Ekici, A, Brockschmidt, FF, Nöthen, MM, Munnich, A, Strom, TM, Reis, A, Colleaux, L (2011 May 25). "Adaptor Protein Complex 4 Deficiency Causes Severe Autosomal-Recessive Intellectual Disability, Progressive Spastic Paraplegia, Shy Character, and Short Stature.". American journal of human genetics 88 (6): 788–95. doi:10.1016/j.ajhg.2011.04.019. PMC 3113253. PMID 21620353. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3113253. 

[edit] Further reading



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