+--------COMP:N-N(of)-------+   
                              |            +-MOD_ATT:N-ADJ+   
    +SUBJ:V_PASS+COMP:V_PASS-N+            |       +MOD_AT+   
    |           |             |            |       |      |   
 PD98059 is involved in accumulation of __SP__ __NODE__ mRNA .
SUBJ:V_PASS-N (involve,PD98059)
COMP:V_PASS-N(in) (involve,accumulation)
COMP:N-N(of) (accumulation,mRNA)
MOD_ATT:N-ADJ (mRNA,__SP__)
MOD_ATT:N-ADJ (mRNA,__NODE__)