Linked from
The 11 pages that link to Protein kinase, each with the reason it gives.
ATPRelated: Kinases use ATP to regulate protein activity, localization, and interactions.
Signal transductionRelated: Kinases relay signals by changing the activity of target proteins.
Cell signalingRelated: Kinases transmit signals by modifying proteins in signaling cascades.
PhosphorylationRelated: Protein kinases catalyze many regulatory phosphorylation reactions.
Biochemical cascadeRelated: Kinases often activate the next enzyme in a signaling cascade.