( Ras ( ( links ( ( growth factor ) ( signaling ( to ( ( the ( cell ( cycle machinery ) ) ) ( via ( regulation ( of ( ( ( cyclin D1 ) and ) ( the ( Cdk ( inhibitor p27KIP1 ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Ras)) (VP (VBZ links) (NP (NP (NN growth) (NN factor)) (VP (VBG signaling) (PP (TO to) (NP (NP (DT the) (NN cell) (NN cycle) (NN machinery)) (PP (IN via) (NP (NP (NN regulation)) (PP (IN of) (NP (NP (NN cyclin) (NN D1)) (CC and) (NP (DT the) (NNP Cdk) (NN inhibitor) (NN p27KIP1))))))))))) (. .)))
Ras links growth factor signaling to the cell cycle machinery via regulation of cyclin D1 and the Cdk inhibitor p27KIP1.
(ROOT (S (NP (NNS Cyclins)) (VP (VB regulate) (NP (DT the) (NN cell) (NN cycle)) (ADVP (RB only)) (SBAR (WHADVP (WRB when)) (S (NP (PRP they)) (VP (VBP are) (ADJP (RB tightly) (VBN bound) (PP (TO to) (NP (NNS cdks)))))))) (. .)))