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