Function
This antibody targets Os09g0533100, an enzyme that catalyzes the phosphorylation of pantothenate, the initial step in CoA biosynthesis. This enzyme may play a crucial role in regulating the intracellular CoA concentration. It exhibits functional redundancy with PANK1. Notably, the phosphatase activity displays a preference for normal or oxidatively damaged intermediates of 4'-phosphopantetheine, providing strong indirect evidence that this activity pre-empts damage within the CoA pathway. Hydrolyzing excess 4'-phosphopantetheine could function as a directed overflow mechanism, preventing its oxidation to the S-sulfonate, sulfonate, or other forms. Hydrolyzing 4'-phosphopantetheine sulfonate or S-sulfonate would hinder their conversion to inactive forms of CoA and acyl carrier protein.