( ( The enzyme ) ( ( has ( ( optimal pH ) ( ( The enzyme ) ( has ( optimal temperature ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN enzyme)) (VP (VBZ has) (NP (NP (JJ optimal) (NN pH)) (SBAR (S (NP (DT The) (NN enzyme)) (VP (VBZ has) (NP (JJ optimal) (NN temperature))))))) (. .)))
The enzyme has optimal pH The enzyme has optimal temperature.
(ROOT (S (NP (DT All) (NNS enzymes)) (VP (VBP have) (NP (DT an) (JJ optimal) (NN temperature) (CC and) (NN ph.)))))