ArticleNucleic acids research2013
Oxygen-dependent expression of cytochrome c oxidase subunit 4-2 gene expression is mediated by transcription factors RBPJ, CXXC5 and CHCHD2.
Article in Nucleic acids research, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 101 papers.
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Who cites it
101 citing papers in PubMed, 186 citations in OpenAlex.
- CHCHD2 and CHCHD10 promoted autophagic clearance of protein aggregates via GABARAPs.Autophagy · 2026Article
- Cortical organoids reveal human-specific role of METTL5 in neurodevelopment via regulation of CHCHD2.Stem cell reports · 2026Article
- Arterial tracing-based technique for rapid purification of pulmonary arterial smooth muscle cells from rat lungs.Physiological reports · 2026Article
- Mitochondrial dysfunction in peri-implantitis: bioinformatics and machine learning analysis with in vivo experiment.Odontology · 2026Article
- Pulmonary organoid models demonstrate compositionally driven epithelial plasticity and immune polarization.iScience · 2026Article
- Article
- CXXC5 is a ubiquitinated protein and is degraded by the ubiquitin-proteasome pathway.Protein science : a publication of the Protein Society · 2025Article
- The Efficacy of Hellebrigenin Against Nasopharyngeal Carcinoma Cells: The Molecular and Bioinformatic Analysis.Journal of cellular and molecular medicine · 2025Article
- CHCHD2 rescues the mitochondrial dysfunction in iPSC-derived neurons from patient with Mohr-Tranebjaerg syndrome.Cell death & disease · 2025Article
- Dissecting genomes of multiple yak populations: unveiling ancestry and high-altitude adaptation through whole-genome resequencing analysis.BMC genomics · 2025Article
- Dysregulation of mitochondrial α-ketoglutarate dehydrogenase leads to elevated lipid peroxidation in CHCHD2-linked Parkinson's disease models.Nature communications · 2025Article
- Signal integrator function of CXXC5 in Cancer.Cell communication and signaling : CCS · 2025Review
- Role of the mitochondrial regulatory factor CHCHD2 in neurodegenerative diseases.Frontiers in neuroscience · 2025Review
- Hif1α-dependent mitochondrial acute ONature communications · 2024Article
- CHCHD2 P14L, found in amyotrophic lateral sclerosis, exhibits cytoplasmic mislocalization and alters CaPNAS nexus · 2024Article
- The ratio of cytochrome c oxidase subunit 4 isoform 4I1 and 4I2 mRNA is changed in permanent atrial fibrillation.ESC heart failure · 2024Article
- Aberrant CHCHD2-associated mitochondriopathy in Kii ALS/PDC astrocytes.Acta neuropathologica · 2024Article
- CHCHD2 up-regulation in Huntington disease mediates a compensatory protective response against oxidative stress.Cell death & disease · 2024Article
- Clinical chorioamnionitis at term is characterized by changes in the plasma concentration of CHCHD2/MNRR1, a mitochondrial protein.The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians · 2023Article
- Evidence for the participation of CHCHD2/MNRR1, a mitochondrial protein, in spontaneous labor at term and in preterm labor with intra-amniotic infection.The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians · 2023Article
41 more citing papers are in PubMed but not listed here.
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Cytochrome c oxidase (COX) is the terminal enzyme of the electron transport chain, made up of 13 subunits encoded by both mitochondrial and nuclear DNA. Subunit 4 (COX4), a key regulatory subunit, exists as two isoforms, the ubiquitous isoform 1 and the tissue-specific (predominantly lung) isoform 2 (COX4I2). COX4I2 renders lung COX about 2-fold more active compared with liver COX, which lacks COX4I2. We previously identified a highly conserved 13-bp sequence in the proximal promoter of COX4I2 that functions as an oxygen responsive element (ORE), maximally active at a 4% oxygen concentration. Here, we have identified three transcription factors that bind this conserved ORE, namely recombination signal sequence-binding protein Jκ (RBPJ), coiled-coil-helix-coiled-coil-helix domain 2 (CHCHD2) and CXXC finger protein 5 (CXXC5). We demonstrate that RBPJ and CHCHD2 function towards activating the ORE at 4% oxygen, whereas CXXC5 functions as an inhibitor. To validate results derived from cultured cells, we show using RNA interference a similar effect of these transcription factors in the gene regulation of COX4I2 in primary pulmonary arterial smooth muscle cells. Depending on the oxygen tension, a concerted action of the three transcription factors regulates the expression of COX4I2 that, as we discuss, could augment both COX activity and its ability to cope with altered cellular energy requirements.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.