from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of a class of enzymes that catalyze the linkage of two molecules, generally utilizing ATP as the energy donor. Also called synthetase.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of a group of enzymes that catalyze the binding of two molecules; synthetase.
from the GNU version of the Collaborative International Dictionary of English
- n. An enzyme which catalyzes creation of a covalent bond between two substrates, resulting in a larger product which is a combination of the two starting materials; especially, DNA ligase, an enzyme which creates a phosphate bond between 5′ and 3′ ends of a DNA chain, resulting in a longer chain of DNA. DNA ligase is important in normal biosynthesis of DNA in the replication cycle of cells.
Latin ligāre, to bind; see leig- in Indo-European roots + -ase.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin lig(are) ("to bind") + -ase. (Wiktionary)