ligase

noun Biochemistry.

1. any of a class of enzymes that catalyze the joining of two molecules by formation of a covalent bond accompanied by the hydrolysis of ATP.

noun

1. any of a class of enzymes that catalyse the formation of covalent bonds and are important in the synthesis and repair of biological molecules, such as DNA

n.

1. Any of a class of enzymes, including the carboxylases, that catalyze the linkage of two molecules, generally utilizing ATP as the energy donor.synthetase