( ( ( The role ) ( of ( ( the ( elastic ( protein titin ) ) ) ( in ( ( the function ) ( of ( normal ( and ( diseased muscle ) ) ) ) ) ) ) ) ) ( ( is ( ( the ( primary interest ) ) ( of ( my laboratory ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN role)) (PP (IN of) (NP (NP (DT the) (JJ elastic) (NN protein) (NN titin)) (PP (IN in) (NP (NP (DT the) (NN function)) (PP (IN of) (NP (JJ normal) (CC and) (JJ diseased) (NN muscle)))))))) (VP (VBZ is) (NP (NP (DT the) (JJ primary) (NN interest)) (PP (IN of) (NP (PRP$ my) (NN laboratory))))) (. .)))
The role of the elastic protein titin in the function of normal and diseased muscle is the primary interest of my laboratory.
(ROOT (S (NP (DT The) (ADJP (JJS largest) (VBN known)) (NNS proteins)) (VP (VBP are) (ADJP (JJ titins))) (. .)))