from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various enzymes that catalyze the transfer of a phosphate group from a donor, such as ADP or ATP, to an acceptor.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of a group of enzymes that transfers phosphate groups from high-energy donor molecules, such as ATP, to specific target molecules (substrates); the process is termed phosphorylation.
from the GNU version of the Collaborative International Dictionary of English
- n. One of a class of enzymes that catalyze transfer of a phosphate group from ATP to another molecule; it is a type of phosphorylase.
from The Century Dictionary and Cyclopedia
- n. A ferment-like body which is capable of rendering physiologically active another ferment and thus produces chemical changes in a third body while in itself it is apparently inert.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an enzyme that catalyzes the conversion of a proenzyme to an active enzyme
kin(etic) + -ase.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek κινεῖν (kinein, "to move") + -ase, a suffix forming enzyme names. (Wiktionary)