( ( Since ( there ( are ( three ( transmembrane regions ) ) ) ) ) ( , ( ( ( the ( ( N-terminus and ) C-terminus ) ) ( of ( the protein ) ) ) ( ( will ( be ( on ( ( opposite sides ) ( of ( the ( plasma membrane ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN Since) (S (NP (EX there)) (VP (VBP are) (NP (CD three) (JJ transmembrane) (NNS regions))))) (, ,) (NP (NP (DT the) (NNPS N-terminus) (CC and) (NNPS C-terminus)) (PP (IN of) (NP (DT the) (NN protein)))) (VP (MD will) (VP (VB be) (PP (IN on) (NP (NP (JJ opposite) (NNS sides)) (PP (IN of) (NP (DT the) (NN plasma) (NN membrane))))))) (. .)))
Since there are three transmembrane regions, the N-terminus and C-terminus of the protein will be on opposite sides of the plasma membrane.
(ROOT (S (NP (JJ Transmembrane) (NNS proteins)) (VP (VBP span) (NP (DT the) (JJ entire) (NN plasma) (NN membrane))) (. .)))