+--------COMP:N-N(of)-------+     
                                 |           +-MOD_ATT:N-ADJ-+     
                +SUBJ:+--OBJ:V-N-+           |       +MOD_ATT+     
                |     |          |           |       |       |     
 Prostaglandin D1 increases activation of __SP__ __NODE__ protein .
SUBJ:V-N (increase,D1)
OBJ:V-N (increase,activation)
COMP:N-N(of) (activation,protein)
MOD_ATT:N-ADJ (protein,__SP__)
MOD_ATT:N-ADJ (protein,__NODE__)