{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nAlthough the query asks for a summary of UMODL1‐AS1 function, none of the provided abstracts mention or characterize UMODL1‐AS1. Instead, these studies focus on peroxisomal biology – notably the role of the import receptor PEX5 in the cytosolic recognition and subsequent translocation of matrix proteins, and its regulated interactions with cargo proteins such as catalase. These investigations detail how PEX5, through distinct contributions of its N‐ and C‐terminal domains and modulation by factors such as the PEX14 N‐terminal region, governs the proper formation and disruption of protein complexes during peroxisomal protein import."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "1", "end_ref": "3"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nOther studies describe how defective peroxisomal function contributes to various pathologies including neurological impairments, disrupted neuronal migration, spermatogenic failure, and abnormal reactive oxygen species homeostasis. These works emphasize the importance of peroxisomal quality control mechanisms – for instance, the role of PEX5 monoubiquitination in both recycling the receptor and targeting defective peroxisomes for autophagic degradation – as well as the interorganelle cross‐talk between peroxisomes and mitochondria in metabolic regulation."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "4", "end_ref": "8"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nAdditional research extends our understanding to peroxisomal dysfunction in contexts such as cardiac hypertrophy, aging, and lipid metabolism, demonstrating that alterations in peroxisomal components (e.g., reduced PEX5 expression) affect mitochondrial structure and function, overall cellular energy production, and the biosynthesis and distribution of complex lipids like plasmalogens. Collectively, while these studies provide a comprehensive picture of peroxisomal regulation and its impact on cellular and organismal health, none reveal any role or function for UMODL1‐AS1. Thus, based on the current abstracts, UMODL1‐AS1 remains uncharacterized in these contexts."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "9", "end_ref": "11"}]}, {"type": "t", "text": "\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Anneleen Janssen, Pierre Gressens, Markus Grabenbauer, et al. 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"}, {"type": "b", "children": [{"type": "t", "text": "Export-deficient monoubiquitinated PEX5 triggers peroxisome removal in SV40 large T antigen-transformed mouse embryonic fibroblasts."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Autophagy (2015)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1080/15548627.2015.1061846"}], "href": "https://doi.org/10.1080/15548627.2015.1061846"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "26086376"}], "href": "https://pubmed.ncbi.nlm.nih.gov/26086376"}]}, {"type": "r", "ref": 6, "children": [{"type": "t", "text": "Zhihui Zhu, Jianzhong Chen, Guanghu Wang, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Ceramide regulates interaction of Hsd17b4 with Pex5 and function of peroxisomes."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Biochim Biophys Acta Mol Cell Biol Lipids (2019)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1016/j.bbalip.2019.05.017"}], "href": "https://doi.org/10.1016/j.bbalip.2019.05.017"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "31176039"}], "href": "https://pubmed.ncbi.nlm.nih.gov/31176039"}]}, {"type": "r", "ref": 7, "children": [{"type": "t", "text": "Bernhard Hochreiter, Cheng-Shoong Chong, Andreas Hartig, et al. 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