PGK2
Phosphoglycerate Kinase 2 (PGK2): The Energy Powerhouse and Disease Regulator
Description:
Phosphoglycerate kinase 2 (PGK2) is a crucial enzyme involved in the glycolytic pathway, the central energy metabolism process in cells. It catalyzes the transfer of a phosphate group from 1,3-bisphosphoglycerate (BPG) to ADP, generating ATP, the primary energy currency of cells. PGK2 is primarily expressed in erythrocytes, skeletal and cardiac muscles, where ATP demand is high.
Associated Diseases:
Mutations in the PGK2 gene cause a range of inherited disorders known as phosphoglycerate kinase deficiency (PGK-D). These disorders affect muscle function and energy production, leading to a spectrum of symptoms, including:
- Muscle weakness and fatigue
- Exercise intolerance
- Myoglobinuria (presence of muscle proteins in urine)
- Anemia
- Neuropathy
PGK-D can be divided into several subtypes based on the severity of symptoms and the specific mutations present. Autosomal recessive mutations are more severe, causing early-onset, life-threatening anemia and muscle dysfunction.
Did you Know ?
- PGK-D affects approximately 1 in 100,000 individuals worldwide, with higher prevalence in certain populations, such as the Amish in Pennsylvania.
