Protein unc-119 homolog A - Q13432 (U119A_HUMAN)


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Involved in synaptic functions in photoreceptor cells, the signal transduction in immune cells as a Src family kinase activator, endosome recycling, the uptake of bacteria and endocytosis, protein trafficking in sensory neurons and as lipid-binding chaperone with specificity for a diverse subset of myristoylated proteins. Specifically binds the myristoyl moiety of a subset of N-terminally myristoylated proteins and is required for their localization. Binds myristoylated GNAT1 and is required for G-protein localization and trafficking in sensory neurons. Probably plays a role in trafficking proteins in photoreceptor cells. Plays important roles in mediating Src family kinase signals for the completion of cytokinesis via RAB11A. UniProt
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      ESCHER  BiGG
Subunit Structure
Interacts with CABP4; in the absence of calcium (By similarity). Interacts with DNM1; leading to a decrease of DNM1 GTPase activity (By similarity). May interact with GTP-bound ARL1. Interacts with ARL2 and ARL3 (GTP-bound forms); this promotes the release of myyristoylated cargo proteins (PubMed:22960633). Found in a complex with ARL3, RP2 and UNC119; RP2 induces hydrolysis of GTP ARL3 in the complex, leading to the release of UNC119. Interacts with NPHP3 (when myristoylated). Interacts with CYS1 (when myristoylated). Interacts with MACIR; interaction only takes place when UNC119 is not liganded with myristoylated proteins. Interacts with LCK; this interaction plays a crucial role in activation of LCK. Interacts with FYN. Interacts with RAB11A; in a cell cycle-dependent manner. Interacts with LYN (via SH2 and SH3 domains); leading to LYN activation. Found in a complex with ABL1, ABL2, CRK and UNC119; leading to the inhibition of CRK phosphorylation by ABL kinases. Interacts with CD44; leading to Shigella invasion. Interacts with KLHL18 (via kelch repeats) (PubMed:31696965). Interacts with PPP3CA, PPP3CB and PPP3CC (By similarity). UniProt
Adopts an immunoglobulin-like beta-sandwich fold forming a hydrophobic cavity that captures N-terminally myristoylated target peptides (PubMed:21642972). Phe residues within the hydrophobic beta sandwich are required for myristate binding (PubMed:22085962). UniProt
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