gyrase

noun
gyr·​ase | \ ˈjī-ˌrās \

Definition of gyrase

: a bacterial enzyme that catalyzes the breaking and rejoining of bonds linking adjacent nucleotides in circular DNA to generate supercoiled DNA helices

First Known Use of gyrase

1976, in the meaning defined above

History and Etymology for gyrase

gyr- + -ase

Keep scrolling for more

Learn More about gyrase

Statistics for gyrase

Look-up Popularity

Time Traveler for gyrase

The first known use of gyrase was in 1976

See more words from the same year

Keep scrolling for more

More Definitions for gyrase

gyrase

noun
gy·​rase | \ ˈjī-ˌrās, -ˌrāz \

Medical Definition of gyrase

: a bacterial enzyme that is a topoisomerase which catalyzes the ATP-dependent breaking and rejoining of double-strands in circular DNA to generate negative supercoils that twist in the opposite direction as the turns in the original helices

Note: The supercoils introduced by the bacterial gyrase help to relieve the torsional stress in the circular DNA strands that is a consequence of the unwinding of the DNA during replication.

More from Merriam-Webster on gyrase

Rhyming Dictionary: Words that rhyme with gyrase

Comments on gyrase

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

WORD OF THE DAY

to express emotion in a dramatic way

Get Word of the Day daily email!

Test Your Vocabulary

What did you just call me?! A Quiz

  • rows-of-various-emoji
  • If a member of the audience describes your speech as bombastic, does that person mean it is:
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
SCRABBLE® Sprint

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!