Coenzyme A biosynthetic and metabolic enzymes (CoA metabolic enzymes)

The general metabolic enzymes for pantothenic acid are a group of proteins that facilitate the conversion of pantothenic acid (Vitamin B5) into Coenzyme A (CoA) and its subsequent degradation (NIH, 2025). The biosynthetic pathway consists of five essential enzymes: pantothenate kinase (PANK), phosphopantothenoylcysteine synthetase (PPCS), phosphopantothenoylcysteine decarboxylase (PPCDC), phosphopantetheine adenylyltransferase (PPAT), and dephospho-CoA kinase (COASY) (PathBank, 2025). These enzymes are critical for cellular energy production, as CoA is a vital cofactor for the tricarboxylic acid (TCA) cycle and fatty acid metabolism (NIH, 2025). The metabolic process also involves pantetheinases, such as Vanin-1, which recycle pantetheine into pantothenic acid and cysteamine, influencing oxidative stress and inflammatory responses (PubMed, 2022). Genetic mutations in these enzymes, most notably PANK2, are associated with neurodegenerative disorders like Pantothenate Kinase-Associated Neurodegeneration (PKAN), which is characterized by iron accumulation in the brain (Kurian & Hayflick, 2013). Furthermore, bacterial versions of these enzymes are targeted for the development of novel antibiotics, as they differ significantly from human counterparts (NIH, 2025). Therapeutic agents interacting with this pathway include PANK activators like PZ-2891, which aim to restore CoA levels, and Vanin inhibitors like RR6, which modulate inflammation (Sharma et al., 2018). Overall, these enzymes serve as central regulators of metabolism and are key targets for treating metabolic, neurodegenerative, and infectious diseases.

Other names

General metabolic enzymes for pantothenic acidPantothenate metabolic enzymesCoA biosynthetic enzymesPantothenic acid enzymesVaninPantothenate kinase

Modulation of Coenzyme A levels through the activation or inhibition of biosynthetic enzymes or the inhibition of degradative enzymes.