Lrpprc — Leucine Rich Pentatricopeptide Repeat Containing is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
| LRPPRC | |
|---|---|
| Gene Symbol | LRPPRC |
| Full Name | Leucine-Rich Pentatricopeptide Repeat Containing |
| Chromosome | 2p21 |
| NCBI Gene ID | 90333 |
| OMIM | 607544 |
| Ensembl ID | ENSG00000138095 |
| UniProt ID | Q9GZL0 |
| Associated Diseases | Leigh Syndrome French-Canadian Type, Mitochondrial DNA Depletion Syndrome, Neurodegeneration |
LRPPRC Gene is a gene/protein involved in critical biological pathways relevant to neurodegenerative diseases. It plays important roles in neuronal function, mitochondrial maintenance, or cellular signaling that are essential for neuronal health.
Dysregulation or mutations in this gene contribute to the pathogenesis of Alzheimer's disease, Parkinson's disease, and related neurodegenerative disorders through effects on protein function, cellular metabolism, or stress response pathways.
LRPPRC (Leucine-Rich Pentatricopeptide Repeat Containing) is a mitochondrial RNA-binding protein that plays crucial roles in mitochondrial gene expression. The protein contains multiple tetratricopeptide repeat (TPR) domains that mediate protein-protein interactions and RNA binding.
Key functions include:
LRPPRC contains:
The modular structure allows LRPPRC to act as a molecular adaptor, bringing together different components of the mitochondrial translation machinery.
LRPPRC is essential for the expression of mitochondrial-encoded genes, particularly those encoding Complex I (NADH dehydrogenase) subunits. Loss of LRPPRC function leads to:
LRPPRC encodes a leucine-rich pentatricopeptide repeat (PPR) protein that localizes to mitochondria and is involved in post-transcriptional regulation of mitochondrial gene expression. LRPPRC binds to mitochondrial mRNAs and regulates their stability, processing, and translation. It plays a crucial role in maintaining proper levels of respiratory chain components.
LRPPRC mutations are associated with:
Mitochondrial Complex I Deficiency: LRPPRC variants reduce Complex I activity, leading to Leigh syndrome phenotypes.
Neurodegeneration: Mitochondrial dysfunction contributes to neuronal death in Parkinson's disease and other disorders.
Cancer Metabolism: Altered LRPPRC expression affects mitochondrial function in cancer cells, influencing tumor metabolism.
Cardiomyopathy: Mitochondrial dysfunction due to LRPPRC deficiency can affect cardiac muscle function.
Broadly expressed with high levels in tissues with high mitochondrial content, including brain, heart, and skeletal muscle.
| Disease | Variants | Inheritance | Mechanism |
|---|---|---|---|
| Leigh Syndrome French-Canadian | A354V, V368I, R433C, P789L | Autosomal recessive | Impaired mitochondrial mRNA processing, respiratory chain deficiency |
| Mitochondrial DNA Depletion Syndrome | Null alleles | Autosomal recessive | Reduced mtDNA maintenance |
The study of Lrpprc — Leucine Rich Pentatricopeptide Repeat Containing has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.