Synthase vs. Synthetase

Synthasenoun

(enzyme) Any enzyme that catalyzes the synthesis of a biological compound but, unlike synthetases, does not make use of ATP as a source of energy

Synthasenoun

an enzyme which catalyses the linking together of two molecules, especially without the direct involvement of ATP

Synthase

In biochemistry, a synthase is an enzyme that catalyses a synthesis process. Note that, originally, biochemical nomenclature distinguished synthetases and synthases.

Synthetasenoun

(enzyme) Any ligase that synthesizes biological compounds using ATP as a source of energy.