Nucleosides & Nucleotides

Nucleosides are the basic molecules for nucleic acid synthesis. They can participate in nucleic acid synthesis, energy transfer and signal transduction in cells only after combining with phosphate to form nucleotides. Nucleotides are not only the basic units of RNA and DNA, but also play a vital role in energy transfer (such as ATP), cell signal transduction (such as cAMP, GTP) and enzyme catalysis reactions. Nucleosides and nucleotides play an important role in the basic metabolism, information transmission and regulation of life activities of cells, and are indispensable molecules in biology.