PANK3 Antibody (YA8569)

PANK3 (pantothenate kinase 3) is a cytosolic member of the mammalian pantothenate kinase family that catalyzes the phosphorylation of pantothenate, the first committed and rate-limiting step in coenzyme A (CoA) biosynthesis, thereby contributing to cellular CoA homeostasis and metabolic regulation^[1][2]. Mechanistically, PANK3 integrates metabolic signals through feedback control by CoA thioesters, and structural studies have shown that acetyl-CoA binding stabilizes an inactive conformation that regulates substrate access and enzymatic activity^[2][3]. Because CoA is required for central carbon metabolism, fatty acid metabolism, and numerous acyl-transfer reactions, PANK3 functions within a key metabolic control pathway that links nutrient status to intracellular biosynthetic capacity^[1][2]. In disease research, dysregulation of the pantothenate kinase pathway has been associated with metabolic and neurodegenerative disorders, and the broader PANK family has therefore emerged as an important target for investigating CoA-dependent pathophysiology^[4]. Compared with related isoforms, PANK3 shares a highly conserved catalytic core with PANK1 and PANK2 but displays distinct regulatory and tissue-expression characteristics, supporting nonredundant roles in mammalian CoA metabolism^[3][4]. For experimental applications, small-molecule modulators that interact with the substrate/allosteric regulatory domain of PANK3 have been shown to alter enzyme activity, providing useful tools for mechanistic studies of CoA biosynthesis and isoform-selective metabolic regulation^[2].