Mizoribine Hydrobromide (CAS 50924-49-7 (non-salt))

Mizoribine Hydrobromide, cataloged under CAS number 50924-49-7, is the hydrobromide salt form of mizoribine, a nucleoside inhibitor of inosine monophosphate dehydrogenase (IMPDH). This enzyme plays a crucial role in the de novo pathway of guanine nucleotide synthesis, which is essential for DNA and RNA synthesis in cells. Mizoribine Hydrobromide acts by competitively inhibiting IMPDH, leading to a reduction in guanine nucleotide pools, particularly guanosine triphosphate (GTP), which is vital for RNA and DNA synthesis. This action results in the suppression of cell proliferation, particularly in rapidly dividing cells. In research, Mizoribine Hydrobromide is used extensively to study cellular proliferation processes and the biochemical pathways involved in nucleotide biosynthesis. It serves as a tool for investigating the effects of guanine nucleotide depletion on various cellular functions, including DNA replication, RNA transcription, and protein synthesis. Furthermore, it helps in elucidating the cellular responses to nucleotide imbalance, such as activation of stress response pathways and cell cycle arrest. Research involving this compound contributes significantly to the understanding of molecular biology and biochemistry of cell growth and division, providing insights into the fundamental mechanisms that control cellular processes.