{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nUnc119 functions as a versatile adaptor protein that plays a critical role in receptor‐mediated signal transduction in T cells. In these cells, Unc119 associates with key components of the T cell receptor complex such as CD3 and CD4, where it activates Src family kinases Lck and Fyn—events that are essential for initiating downstream signaling pathways. This potentiation of Src kinase activity leads to effective T cell activation, cytokine production (including interleukin‑2 and IL‑4), and proliferation, thereby impacting T cell differentiation and even contributing to the Th1/Th2 balance observed in allergic asthma. The requirement for Unc119 in these processes is underscored by observations that its deficiency dampens early TCR-triggered events and delays kinase activation thereby compromising immune responses."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "1", "end_ref": "4"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nIn addition to its role in immune cells, Unc119 is integral to the regulation of protein trafficking within sensory neurons, notably in retinal photoreceptors. It acts as an acyl-binding protein that aids the proper transport of lipid-modified proteins such as transducin, and interacts with synaptic proteins including RIBEYE and CaBP4. These interactions not only ensure the correct localization of proteins critical for phototransduction but also facilitate synaptic transmission by modulating glutamate release. Genetic models further indicate that Unc119 modulates the balance between the trafficking of acylated and isoprenylated proteins in photoreceptor cells, thereby maintaining normal retinal function."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "5", "end_ref": "7"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nAdditionally, studies aimed at understanding retinal degeneration have explored protein interactions and signaling cascades that occur in photoreceptors undergoing apoptosis. Although not directly focused on Unc119, these investigations contribute to the broader understanding of protein transport and intracellular signaling mechanisms that may intersect with Unc119-mediated pathways."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "8"}]}, {"type": "t", "text": "\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Magdalena M Gorska, Susan J Stafford, Osman Cen, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Unc119, a novel activator of Lck/Fyn, is essential for T cell activation."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "J Exp Med (2004)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1084/jem.20030589"}], "href": "https://doi.org/10.1084/jem.20030589"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "14757743"}], "href": "https://pubmed.ncbi.nlm.nih.gov/14757743"}]}, {"type": "r", "ref": 2, "children": [{"type": "t", "text": "Magdalena M Gorska, Qiaoling Liang, Zunayet Karim, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Uncoordinated 119 protein controls trafficking of Lck via the Rab11 endosome and is critical for immunological synapse formation."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "J Immunol (2009)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.4049/jimmunol.0900792"}], "href": "https://doi.org/10.4049/jimmunol.0900792"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "19592652"}], "href": "https://pubmed.ncbi.nlm.nih.gov/19592652"}]}, {"type": "r", "ref": 3, "children": [{"type": "t", "text": "Ramarao Vepachedu, Magdalena M Gorska, Neil Singhania, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Unc119 regulates myofibroblast differentiation through the activation of Fyn and the p38 MAPK pathway."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "J Immunol (2007)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.4049/jimmunol.179.1.682"}], "href": "https://doi.org/10.4049/jimmunol.179.1.682"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "17579091"}], "href": "https://pubmed.ncbi.nlm.nih.gov/17579091"}]}, {"type": "r", "ref": 4, "children": [{"type": "t", "text": "Magdalena M Gorska, Nicolas Goplen, Qiaoling Liang, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Uncoordinated 119 preferentially induces Th2 differentiation and promotes the development of asthma."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "J Immunol (2010)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.4049/jimmunol.0903115"}], "href": "https://doi.org/10.4049/jimmunol.0903115"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "20220094"}], "href": "https://pubmed.ncbi.nlm.nih.gov/20220094"}]}, {"type": "r", "ref": 5, "children": [{"type": "t", "text": "Françoise Haeseleer "}, {"type": "b", "children": [{"type": "t", "text": "Interaction and colocalization of CaBP4 and Unc119 (MRG4) in photoreceptors."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Invest Ophthalmol Vis Sci (2008)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1167/iovs.07-1166"}], "href": "https://doi.org/10.1167/iovs.07-1166"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "18296658"}], "href": "https://pubmed.ncbi.nlm.nih.gov/18296658"}]}, {"type": "r", "ref": 6, "children": [{"type": "t", "text": "Houbin Zhang, Jeanne M Frederick, Wolfgang Baehr "}, {"type": "b", "children": [{"type": "t", "text": "Unc119 gene deletion partially rescues the GRK1 transport defect of Pde6d (- /-) cones."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Adv Exp Med Biol (2014)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1007/978-1-4614-3209-8_62"}], "href": "https://doi.org/10.1007/978-1-4614-3209-8_62"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "24664735"}], "href": "https://pubmed.ncbi.nlm.nih.gov/24664735"}]}, {"type": "r", "ref": 7, "children": [{"type": "t", "text": "Katherine E Fehlhaber, Anurima Majumder, Kimberly K Boyd, et al. "}, {"type": "b", "children": [{"type": "t", "text": "A Novel Role for UNC119 as an Enhancer of Synaptic Transmission."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Int J Mol Sci (2023)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.3390/ijms24098106"}], "href": "https://doi.org/10.3390/ijms24098106"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "37175812"}], "href": "https://pubmed.ncbi.nlm.nih.gov/37175812"}]}, {"type": "r", "ref": 8, "children": [{"type": "t", "text": "Naoki Mori, Yasutsugu Ishiba, Shinya Kubota, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Truncation mutation in HRG4 (UNC119) leads to mitochondrial ANT-1-mediated photoreceptor synaptic and retinal degeneration by apoptosis."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Invest Ophthalmol Vis Sci (2006)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1167/iovs.05-0493"}], "href": "https://doi.org/10.1167/iovs.05-0493"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "16565359"}], "href": "https://pubmed.ncbi.nlm.nih.gov/16565359"}]}]}]}