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Mammalian mitochondrial ribosomal small subunit (MRPS) genes: A putative role in human disease
Gopal Gopisetty1, Rajkumar Thangarajan1
1Department of Molecular Oncology, Cancer Institute (WIA), Chennai, India.
Abstract:
Mitochondria are prominently understood as power houses producing ATP the primary energy currency of the cell. However, mitochondria are also known to play an important role in apoptosis and autophagy, and mitochondrial dysregulation can lead to pathological outcomes. Mitochondria are known to contain 1500 proteins of which only 13 are coded by mitochondrial DNA and the rest are coded by nuclear genes. Protein synthesis in mitochondria involves mitochondrial ribosomes which are 55-60S particles and are composed of small 28S and large 39S subunits. A feature of mammalian mitoribosome which differentiate it from bacterial ribosomes is the increased protein content. The human mitochondrial ribosomal protein (MRP) gene family comprises of 30 genes which code for mitochondrial ribosomal small subunit and 50 genes for the large subunit. The present review focuses on the mitochondrial ribosomal small subunit genes (MRPS), presents an overview of the literature and data gleaned from publicly available gene and protein expression databases. The survey revealed aberrations in MRPS gene expression patterns in varied human diseases indicating a putative role in their etiology.
Insights
Mitochondrial ribosomal small subunit (MRPS) gene expression is altered in various human diseases, suggesting their involvement in disease development. This review examines MRPS genes and their expression patterns.
Area of Science:
- Cell Biology
- Genetics
- Molecular Biology
Background:
- Mitochondria, known as cellular powerhouses, are crucial for ATP production.
- Beyond energy, mitochondria regulate apoptosis and autophagy; dysregulation leads to pathology.
- Mitochondria contain ~1500 proteins, mostly encoded by nuclear genes, synthesized by mitochondrial ribosomes (mitoribosomes).
Purpose of the Study:
- To review mitochondrial ribosomal small subunit (MRPS) genes.
- To analyze MRPS gene and protein expression data from public databases.
- To investigate the role of MRPS gene expression aberrations in human diseases.
Main Methods:
- Literature review of MRPS genes.
- Analysis of publicly available gene and protein expression databases.
- Survey of expression patterns in various human diseases.
Main Results:
- The human mitochondrial ribosomal protein (MRP) gene family includes 30 genes for the small subunit.
- Aberrations in MRPS gene expression patterns were observed across diverse human diseases.
- These findings suggest a potential role for MRPS genes in disease etiology.
Conclusions:
- Mitochondrial ribosomal small subunit genes are implicated in the pathogenesis of various human diseases.
- Altered MRPS gene expression highlights their importance beyond basic mitochondrial function.
- Further research into MRPS genes could reveal new therapeutic targets for disease.
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