+--COMP:V_PASS-N(In)--+            +----COMP:N-N(of)---+      
      |         +SUBJ:V_PASS+COMP:V_PASS-+          +MOD_ATT:+      
      |         |           |            |          |        |      
 In cells , __NODE__ is involved in maturation of Srebp protein(s) .
COMP:V_PASS-N(In) (involve,cell)
SUBJ:V_PASS-N (involve,__NODE__)
COMP:V_PASS-N(in) (involve,maturation)
COMP:N-N(of) (maturation,protein(s))
MOD_ATT:N-N (protein(s),Srebp)