protein kinase

noun

Definition of protein kinase 

: 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

Examples of protein kinase in a Sentence

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, "More than half a century later, where’s the male pill?," 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, "Message to GOP? Planned Parenthood, STD vaccine win top medical award," 6 Sep. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'protein kinase.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of protein kinase

1962, in the meaning defined above

Keep scrolling for more

Learn More about protein kinase

Share protein kinase

Statistics for protein kinase

Look-up Popularity

Time Traveler for protein kinase

The first known use of protein kinase was in 1962

See more words from the same year

Keep scrolling for more

More Definitions for protein kinase

protein kinase

noun

Medical Definition of protein kinase 

: 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)

Comments on protein kinase

What made you want to look up protein kinase? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

the setting in which something occurs

Get Word of the Day daily email!

Test Your Vocabulary

Musical Words Quiz

  • gramophone
  • Which word describes a musical performance marked by the absence of instrumental accompaniment?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!