{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T05:30:20Z","timestamp":1790314220109,"version":"4.1.0"},"reference-count":78,"publisher":"American Association for the Advancement of Science (AAAS)","issue":"634","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sci. Transl. Med."],"published-print":{"date-parts":[[2022,3,2]]},"abstract":"<jats:p>\n            SERAC1 deficiency is associated with the mitochondrial 3-methylglutaconic aciduria with deafness, (hepatopathy), encephalopathy, and Leigh-like disease [MEGD(H)EL] syndrome, but the role of SERAC1 in mitochondrial physiology remains unknown. Here, we generated\n            <jats:italic>Serac1<\/jats:italic>\n            <jats:sup>\u2212\/\u2212<\/jats:sup>\n            mice that mimic the major diagnostic clinical and biochemical phenotypes of the MEGD(H)EL syndrome. We found that SERAC1 localizes to the outer mitochondrial membrane and is a protein component of the one-carbon cycle. By interacting with the mitochondrial serine transporter protein SFXN1, SERAC1 facilitated and was required for SFXN1-mediated serine transport from the cytosol to the mitochondria. Loss of\n            <jats:italic>SERAC1<\/jats:italic>\n            impaired the one-carbon cycle and disrupted the balance of the nucleotide pool, which led to primary mitochondrial DNA (mtDNA) depletion in mice, HEK293T cells, and patient-derived immortalized lymphocyte cells due to insufficient supply of nucleotides. Moreover, both in vitro and in vivo supplementation of nucleosides\/nucleotides restored mtDNA content and mitochondrial function. Collectively, our findings suggest that MEGD(H)EL syndrome shares both clinical and molecular features with the mtDNA depletion syndrome, and nucleotide supplementation may be an effective therapeutic strategy for MEGD(H)EL syndrome.\n          <\/jats:p>","DOI":"10.1126\/scitranslmed.abl6992","type":"journal-article","created":{"date-parts":[[2022,3,2]],"date-time":"2022-03-02T18:57:27Z","timestamp":1646247447000},"source":"Crossref","is-referenced-by-count":29,"title":["SERAC1 is a component of the mitochondrial serine transporter complex required for the maintenance of mitochondrial DNA"],"prefix":"10.1126","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0956-3160","authenticated-orcid":true,"given":"Hezhi","family":"Fang","sequence":"first","affiliation":[{"name":"Zhejiang Provincial Key Laboratory of Medical Genetics, College of Laboratory Medicine and Life sciences, Wenzhou Medical University, Wenzhou 325035, 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