( ( Each enzyme ) ( ( has ( ( its ( own ( particular ( optimal conditions ) ) ) ) ( of ( ( pH and ) temperature ) ) ) ) . ) )
(ROOT (S (NP (DT Each) (NN enzyme)) (VP (VBZ has) (NP (NP (PRP$ its) (JJ own) (JJ particular) (NN optimal) (NNS conditions)) (PP (IN of) (NP (NN pH) (CC and) (NN temperature))))) (. .)))
Each enzyme has its own particular optimal conditions of pH and temperature.
(ROOT (S (NP (DT All) (NNS enzymes)) (VP (VBP have) (NP (DT an) (JJ optimal) (NN temperature) (CC and) (NN ph.)))))