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