{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nAlthough none of the provided abstracts explicitly mention FAM240C, they offer detailed insights into a related transport system in which kinesin light chain proteins—particularly KLC2—play essential roles. Notably, one study (PMID:"}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": "demonstrated that phosphorylation of KLC2 by GSK‑3β regulates the internalization and trafficking of AMPA receptors. The resulting modulation of synaptic plasticity was shown to impact mood-associated behaviors in animal models, thereby underscoring the significance of kinesin cargo delivery in neuronal function.\n"}]}, {"type": "t", "text": "\n"}, {"type": "p", "children": [{"type": "t", "text": "\nAnother investigation (PMID:"}, {"type": "fg", "children": [{"type": "fg_f", "ref": "2"}]}, {"type": "t", "text": "focused on cochlear hair cells, revealing that KLC2 is indispensable for proper mitochondrial transport and the maintenance of auditory receptor expression. Disruption of KLC2 function in mice led to low‑frequency hearing loss, and gene therapy targeting Klc2 was able to ameliorate these defects, highlighting its crucial role in sensory cell survival.\n"}]}, {"type": "t", "text": "\n"}, {"type": "p", "children": [{"type": "t", "text": "\nA further structural study (PMID:"}, {"type": "fg", "children": [{"type": "fg_f", "ref": "3"}]}, {"type": "t", "text": "provided comprehensive crystal structures of KLC’s tetratricopeptide repeat (TPR) domain. It was found that the N‑terminal capping helix exhibits distinct orientations, forming hydrophobic and electrostatic pockets that diversify cargo binding. This structural plasticity underlies KLC2’s capacity to interact with a broad range of cargos, which is essential for its function in cellular transport.\n"}]}, {"type": "t", "text": "\n"}, {"type": "p", "children": [{"type": "t", "text": "\nWhile the function of FAM240C is not addressed in these studies, understanding the regulatory mechanisms and structural determinants of kinesin light chain–mediated transport—as detailed here—may offer valuable context for future investigations into whether FAM240C is similarly involved in analogous intracellular trafficking pathways.\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Jing Du, Yanling Wei, Lidong Liu, et al. "}, {"type": "b", "children": [{"type": "t", "text": "A kinesin signaling complex mediates the ability of GSK-3beta to affect mood-associated behaviors."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Proc Natl Acad Sci U S A (2010)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1073/pnas.0913138107"}], "href": "https://doi.org/10.1073/pnas.0913138107"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "20534517"}], "href": "https://pubmed.ncbi.nlm.nih.gov/20534517"}]}, {"type": "r", "ref": 2, "children": [{"type": "t", "text": "Xiaolong Fu, Yachun An, Hongyang Wang, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Deficiency of Klc2 Induces Low-Frequency Sensorineural Hearing Loss in C57BL/6 J Mice and Human."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Mol Neurobiol (2021)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1007/s12035-021-02422-w"}], "href": "https://doi.org/10.1007/s12035-021-02422-w"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "34014435"}], "href": "https://pubmed.ncbi.nlm.nih.gov/34014435"}]}, {"type": "r", "ref": 3, "children": [{"type": "t", "text": "The Quyen Nguyen, Mélanie Chenon, Fernando Vilela, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Structural plasticity of the N-terminal capping helix of the TPR domain of kinesin light chain."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "PLoS One (2017)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1371/journal.pone.0186354"}], "href": "https://doi.org/10.1371/journal.pone.0186354"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "29036226"}], "href": "https://pubmed.ncbi.nlm.nih.gov/29036226"}]}]}]}