Phosphoribosyl
Phosphoribosyl refers to a molecule that is a ribose sugar with a phosphate group attached. Specifically, it is often found as a component in biological molecules where a ribose-1-phosphate unit is linked to another molecule, typically through a glycosidic bond. This structure is crucial in the synthesis of nucleotides, the building blocks of DNA and RNA.
In the context of nucleotide biosynthesis, the phosphoribosyl group is frequently transferred from a donor molecule
Similarly, in salvage pathways, where pre-formed bases are recycled to create nucleotides, phosphoribosyl transfer reactions are