Ribulose-5-Phosphate

Ribulose-5-Phosphate (Ru5P) is a key five-carbon sugar phosphate that serves as a central intermediate in several metabolic pathways, including the pentose phosphate pathway (PPP) and the Calvin-Benson cycle. It is crucial for the biosynthesis of various essential biomolecules, such as riboflavin (vitamin B2), NADPH (a reducing equivalent vital for anabolic reactions and antioxidant defense), and nucleotides. Its metabolic flux is often engineered in microorganisms like *Escherichia coli* to enhance the production of valuable compounds. It also plays a role in regulating cellular processes, including lipogenesis and cell proliferation, and its levels can be altered in disease states like prostate cancer.