GpppG lithium salt is a compound used in molecular biology and biochemistry research. It consists of a dinucleotide molecule comprising two guanosine residues linked by a 5'-5' triphosphate bridge. The first guanosine residue has a 5' cap structure (Gppp) commonly found at the 5' end of eukaryotic mRNA molecules. In this salt form, lithium ions are associated with the compound, enhancing its solubility and stability in aqueous solutions. GpppG lithium salt is often used as a substrate in enzymatic reactions involving mRNA capping, as well as in studies related to mRNA processing, translation initiation, and mRNA-protein interactions.
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