( ( Receptor proteins ) ( ( -LRB- ( ( such ( as integrins ) ) -RRB- ) ) ( that ( ( are ( ( ( ( inserted ( into ( ( the front ) ( of ( the ( cell bind ) ) ) ) ) ) ( to ( components ( of ( ( the ( extracellular matrix ) ) ( -LRB- ( ECM -RRB- ) ) ) ) ) ) ) , ) ( ( ( thus ( preventing ( membrane retraction ) ) ) and ) ( ( providing ( adhesive traction ) ) ( for ( cell movement ) ) ) ) ) ) . ) ) ) )
(ROOT (S (NP (NNP Receptor) (NNS proteins)) (PRN (-LRB- -LRB-) (PP (JJ such) (IN as) (NP (NNS integrins))) (-RRB- -RRB-)) (NP (DT that)) (VP (VBP are) (VP (VBN inserted) (PP (IN into) (NP (NP (DT the) (NN front)) (PP (IN of) (NP (DT the) (NN cell) (NN bind))))) (PP (TO to) (NP (NP (NNS components)) (PP (IN of) (NP (NP (DT the) (NN extracellular) (NN matrix)) (PRN (-LRB- -LRB-) (NP (NNP ECM)) (-RRB- -RRB-)))))) (, ,) (S (VP (VP (ADVP (RB thus)) (VBG preventing) (NP (JJ membrane) (NN retraction))) (CC and) (VP (VBG providing) (NP (JJ adhesive) (NN traction)) (PP (IN for) (NP (NN cell) (NN movement)))))))) (. .)))
Receptor proteins (such as integrins) that are inserted into the front of the cell bind to components of the extracellular matrix (ECM), thus preventing membrane retraction and providing adhesive traction for cell movement.
(ROOT (S (NP (NP (DT A) (NN cell) (POS 's)) (NN membrane)) (VP (VBZ provides) (NP (DT a) (NN barrier) (S (VP (TO to) (VP (VB keep) (NP (NN extracellular) (NNS materials)) (PP (IN from) (S (VP (VBG mixing) (PP (IN with) (NP (PRP$ its) (JJ internal) (NNS components))))))))))) (. .)))