Recombinant Human UCK protein (denatured) (His tag N-Terminus)

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Uridine-cytidine kinase (UCK) also known as uridine monophosphate kinase catalyzes the phosphorylation of uridine and cytidine to form uridine monophosphate (UMP) and cytidine monophosphate (CMP) respectively. This enzyme weighs about 30 kilodaltons. UCK expresses mostly in the cytoplasm with notable activity in tissues like the liver pancreas and kidney. Its function hinges on its ability to regulate nucleotide levels which are essential for nucleic acid metabolism.

Biological function summary

Uridine-cytidine kinase supports nucleotide homeostasis in cells. It does not form part of a larger enzymatic complex. This enzyme facilitates the salvage pathway converting nucleosides back into nucleotides. Such activity ensures sufficient nucleotide precursors for DNA and RNA synthesis which is critical during cell division and repair. Therefore disruptions in UCK function can severely impact cellular metabolism and proliferation.

Pathways

Nucleoside and nucleotide metabolism are key areas where uridine-cytidine kinase plays a prominent role. It particularly influences the pyrimidine salvage pathway an important process that helps recycle nucleotides within the cell. UCK interacts with other enzymes such as cytidine monophosphate kinase (CMP kinase) which further phosphorylates CMP into cytidine diphosphate (CDP). Proper functioning of these pathways ensures cellular nucleotide balance and genome integrity.

Abnormalities in uridine-cytidine kinase activity link to certain cancers and metabolic disorders. For example altered UCK activity has connections to cancer types where fast-proliferating cells show increased demand for nucleotides. Furthermore UCK changes have been associated with mitochondrial neurogastrointestinal encephalopathy (MNGIE). This disorder connects with dysfunctional thymidine phosphorylase highlighting the importance of nucleotide metabolism coordination. These insights help target UCK in therapeutic strategies for such diseases.