4hmy

Structural highlights

Disease

[AP1S3_HUMAN] Acrodermatitis continua suppurativa of Hallopeau;Generalized pustular psoriasis;Pustulosis palmaris et plantaris. Disease susceptibility is associated with variations affecting the gene represented in this entry.

Function

[AP1S3_HUMAN] Subunit of clathrin-associated adaptor protein complex 1 that plays a role in protein sorting in the late-Golgi/trans-Golgi network (TGN) and/or endosomes. The AP complexes mediate both the recruitment of clathrin to membranes and the recognition of sorting signals within the cytosolic tails of transmembrane cargo molecules. Involved in TLR3 trafficking (PubMed:24791904).^[1] [AP1G1_MOUSE] Subunit of clathrin-associated adaptor protein complex 1 that plays a role in protein sorting in the late-Golgi/trans-Golgi network (TGN) and/or endosomes. The AP complexes mediate both the recruitment of clathrin to membranes and the recognition of sorting signals within the cytosolic tails of transmembrane cargo molecules. [AP1M1_MOUSE] Subunit of clathrin-associated adaptor protein complex 1 that plays a role in protein sorting in the trans-Golgi network (TGN) and endosomes. The AP complexes mediate the recruitment of clathrin to membranes and the recognition of sorting signals within the cytosolic tails of transmembrane cargo molecules. [AP1B1_HUMAN] Subunit of clathrin-associated adaptor protein complex 1 that plays a role in protein sorting in the late-Golgi/trans-Golgi network (TGN) and/or endosomes. The AP complexes mediate both the recruitment of clathrin to membranes and the recognition of sorting signals within the cytosolic tails of transmembrane cargo molecules. [ARF1_HUMAN] GTP-binding protein that functions as an allosteric activator of the cholera toxin catalytic subunit, an ADP-ribosyltransferase. Involved in protein trafficking among different compartments. Modulates vesicle budding and uncoating within the Golgi complex. Deactivation induces the redistribution of the entire Golgi complex to the endoplasmic reticulum, suggesting a crucial role in protein trafficking. In its GTP-bound form, its triggers the association with coat proteins with the Golgi membrane. The hydrolysis of ARF1-bound GTP, which is mediated by ARFGAPs proteins, is required for dissociation of coat proteins from Golgi membranes and vesicles.

See Also

• Adaptin

References

1. ↑ Setta-Kaffetzi N, Simpson MA, Navarini AA, Patel VM, Lu HC, Allen MH, Duckworth M, Bachelez H, Burden AD, Choon SE, Griffiths CE, Kirby B, Kolios A, Seyger MM, Prins C, Smahi A, Trembath RC, Fraternali F, Smith CH, Barker JN, Capon F. AP1S3 mutations are associated with pustular psoriasis and impaired Toll-like receptor 3 trafficking. Am J Hum Genet. 2014 May 1;94(5):790-7. doi: 10.1016/j.ajhg.2014.04.005. PMID:24791904 doi:http://dx.doi.org/10.1016/j.ajhg.2014.04.005
2. ↑ Ren X, Farias GG, Canagarajah BJ, Bonifacino JS, Hurley JH. Structural Basis for Recruitment and Activation of the AP-1 Clathrin Adaptor Complex by Arf1. Cell. 2013 Feb 14;152(4):755-67. doi: 10.1016/j.cell.2012.12.042. PMID:23415225 doi:http://dx.doi.org/10.1016/j.cell.2012.12.042