Download MendeleyAltering the Phosphorylation Position of Pyrophosphate-Dependent myo -Inositol-1-Kinase Based on Its Crystal Structure.
Tashiro, R., Sato, T., Atomi, H., Miki, K., Fujihashi, M.(2021) ACS Chem Biol 16: 794-799
- PubMed: 33877806
- DOI: https://doi.org/10.1021/acschembio.0c00733
- Primary Citation of Related Structures:
7E4L - PubMed Abstract:
Most kinases utilize ATP as a phosphate donor and phosphorylate a wide range of phosphate acceptors. An alternative phosphate donor is inorganic pyrophosphate (PPi), which costs only 1/1000 of ATP. To develop a method to engineer PPi-dependent kinases, we herein aimed to alter the product of PPi-dependent myo -inositol kinase from d- myo- inositol 1-phosphate to d- myo- inositol 3-phosphate. For this purpose, we introduced the myo- inositol recognition residues of the ATP-dependent myo- inositol-3-kinase into the PPi-dependent myo -inositol-1-kinase. This replacement was expected to change the 3D arrangements of myo -inositol in the active site and bring the hydroxyl group at the 3C position close to the catalytic residue. LC-MS and NMR analyses proved that the engineered enzyme successfully produced myo- inositol 3-phosphate from PPi and myo- inositol.
Organizational Affiliation:
Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
