单词	protein kinase
释义	protein kinase noun : any of a class of enzymes that catalyze the transfer of a phosphate group from ATP to one or more amino acids in the side chain of a protein resulting in a conformational change affecting protein function Example Sentences Recent Examples on the Web The team at Stamford has previously determined the role of homeodomain-interacting protein kinase 4 (HIPK4) in the later stages of spermatogenesis, and it is thought that a drug targeting this kinase could be used as a contraceptive. Hannah Flynn, Ars Technica, 28 Feb. 2018 Hall was honored for his work in discovering how a large family of nutrient-dependent protein kinases, called the TOR proteins, play a central role in controlling the cell growth. Beth Mole, Ars Technica, 6 Sep. 2017 Word History First Known Use 1962, in the meaning defined above Medical Definition protein kinase noun : any of a class of allosteric enzymes that possess a catalytic subunit which transfers a phosphate from ATP to one or more amino acid residues (as serine, threonine, or tyrosine) in a protein's side chain resulting in a conformational change affecting protein function, that play a role in regulating intracellular processes, and that include many which are activated by the binding of a second messenger (as cyclic AMP)
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