+-MOD_ATT:N-ADJ-+                                   
    |       +MOD_ATT+SUBJ:V-+-OBJ:V-N+COMP:N-N(of)+     
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 __SP__ __NODE__ protein affects structure of membrane .
MOD_ATT:N-ADJ (protein,__SP__)
MOD_ATT:N-ADJ (protein,__NODE__)
SUBJ:V-N (affect,protein)
OBJ:V-N (affect,structure)
COMP:N-N(of) (structure,membrane)