+MOD_ATT+MOD_PRED:N-+COMP:ADJ-N(for)+-COMP:N-N(of)+                             
     |       |           |               |             |                             
 __NODE__ protein is necessary for localization of __NODE__ to mitochondrial matrix .
MOD_ATT:N-ADJ (protein,__NODE__)
MOD_PRED:N-ADJ (protein,necessary)
COMP:ADJ-N(for) (necessary,localization)
COMP:N-N(of) (localization,__NODE__)