Transcriptional co-expression and co-regulation of genes coding for components of the oxidative phosphorylation system
<p>Abstract</p> <p>Background</p> <p>The mitochondrial oxidative phosphorylation (OXPHOS) is critical for energy (ATP) production in eukaryotic cells. It was previously shown that genes coding for mitochondrial proteins involved in energy production co-express at the RN...
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| Format: | Article |
| Language: | English |
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BMC
2008-01-01
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| Series: | BMC Genomics |
| Online Access: | http://www.biomedcentral.com/1471-2164/9/18 |
| _version_ | 1818515212577275904 |
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| author | Moraes Carlos T van Waveren Corina |
| author_facet | Moraes Carlos T van Waveren Corina |
| author_sort | Moraes Carlos T |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>The mitochondrial oxidative phosphorylation (OXPHOS) is critical for energy (ATP) production in eukaryotic cells. It was previously shown that genes coding for mitochondrial proteins involved in energy production co-express at the RNA level. Because the OXPHOS enzymes are multimeric complexes, we tested the hypothesis that genes coding for components of specific complexes are also co-regulated at the transcriptional level, and share common regulatory elements in their promoters.</p> <p>Results</p> <p>We observed for the first time that, not only OXPHOS genes as a group co-express, but there is a co-expression of genes within each of the five OXPHOS enzyme complexes, showing a higher degree of complexity in gene co-regulation. <it>In silico </it>analysis of homologous promoter sequences in mammals identified the likely core promoter elements for most genes encoding OXPHOS subunits/assembly factors. The results included a significant abundance of previously identified sites (e.g. NRF1, NRF2, ERRA and YY1), as well as several sites that had not been previously detected. Although we identified patterns that correlated to OXPHOS gene expression, we did not detect an OXPHOS complex-specific arrangement of transcription factor binding sites within the core promoter that could explain the tight co-expression of these functionally related genes.</p> <p>Conclusion</p> <p>This study mapped the core promoters of most OXPHOS related genes and provided an example of gene expression regulation based on the final protein arrangement within a linear metabolic pathway.</p> |
| first_indexed | 2024-12-11T00:26:07Z |
| format | Article |
| id | doaj.art-4f2a7ab2ee7b4dd4b912c772e7af9552 |
| institution | Directory Open Access Journal |
| issn | 1471-2164 |
| language | English |
| last_indexed | 2024-12-11T00:26:07Z |
| publishDate | 2008-01-01 |
| publisher | BMC |
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| series | BMC Genomics |
| spelling | doaj.art-4f2a7ab2ee7b4dd4b912c772e7af95522022-12-22T01:27:32ZengBMCBMC Genomics1471-21642008-01-01911810.1186/1471-2164-9-18Transcriptional co-expression and co-regulation of genes coding for components of the oxidative phosphorylation systemMoraes Carlos Tvan Waveren Corina<p>Abstract</p> <p>Background</p> <p>The mitochondrial oxidative phosphorylation (OXPHOS) is critical for energy (ATP) production in eukaryotic cells. It was previously shown that genes coding for mitochondrial proteins involved in energy production co-express at the RNA level. Because the OXPHOS enzymes are multimeric complexes, we tested the hypothesis that genes coding for components of specific complexes are also co-regulated at the transcriptional level, and share common regulatory elements in their promoters.</p> <p>Results</p> <p>We observed for the first time that, not only OXPHOS genes as a group co-express, but there is a co-expression of genes within each of the five OXPHOS enzyme complexes, showing a higher degree of complexity in gene co-regulation. <it>In silico </it>analysis of homologous promoter sequences in mammals identified the likely core promoter elements for most genes encoding OXPHOS subunits/assembly factors. The results included a significant abundance of previously identified sites (e.g. NRF1, NRF2, ERRA and YY1), as well as several sites that had not been previously detected. Although we identified patterns that correlated to OXPHOS gene expression, we did not detect an OXPHOS complex-specific arrangement of transcription factor binding sites within the core promoter that could explain the tight co-expression of these functionally related genes.</p> <p>Conclusion</p> <p>This study mapped the core promoters of most OXPHOS related genes and provided an example of gene expression regulation based on the final protein arrangement within a linear metabolic pathway.</p>http://www.biomedcentral.com/1471-2164/9/18 |
| spellingShingle | Moraes Carlos T van Waveren Corina Transcriptional co-expression and co-regulation of genes coding for components of the oxidative phosphorylation system BMC Genomics |
| title | Transcriptional co-expression and co-regulation of genes coding for components of the oxidative phosphorylation system |
| title_full | Transcriptional co-expression and co-regulation of genes coding for components of the oxidative phosphorylation system |
| title_fullStr | Transcriptional co-expression and co-regulation of genes coding for components of the oxidative phosphorylation system |
| title_full_unstemmed | Transcriptional co-expression and co-regulation of genes coding for components of the oxidative phosphorylation system |
| title_short | Transcriptional co-expression and co-regulation of genes coding for components of the oxidative phosphorylation system |
| title_sort | transcriptional co expression and co regulation of genes coding for components of the oxidative phosphorylation system |
| url | http://www.biomedcentral.com/1471-2164/9/18 |
| work_keys_str_mv | AT moraescarlost transcriptionalcoexpressionandcoregulationofgenescodingforcomponentsoftheoxidativephosphorylationsystem AT vanwaverencorina transcriptionalcoexpressionandcoregulationofgenescodingforcomponentsoftheoxidativephosphorylationsystem |