+-------COMP:V_PASS-N(in)------+      
                 +---COMP:V_PASS-N(In)---+           +----MOD_ATT:N-N---+      
        +MOD_ATT:+           +SUBJ:V_PASS+           |         +MOD_ATT:+      
        |        |           |           |           |         |        |      
 In cellular membranes , __NODE__ is involved in cleavage of Srebp protein(s) .
MOD_ATT:N-ADJ (membrane,cellular)
COMP:V_PASS-N(In) (involve,membrane)
SUBJ:V_PASS-N (involve,__NODE__)
COMP:V_PASS-N(in) (involve,protein(s))
MOD_ATT:N-N (protein(s),cleavage)
MOD_ATT:N-N (protein(s),Srebp)