+----COMP:N-N(of)----+     
     +MOD_ATT:N+MOD_PRED:N-A+COMP:ADJ-N(for+            +MOD_ATT+     
     |         |            |              |            |       |     
 __NODE__ protein(s) is necessary for inhibition of __NODE__ protein .
MOD_ATT:N-ADJ (protein(s),__NODE__)
MOD_PRED:N-ADJ (protein(s),necessary)
COMP:ADJ-N(for) (necessary,inhibition)
COMP:N-N(of) (inhibition,protein)
MOD_ATT:N-ADJ (protein,__NODE__)