+----------COMP:N-N(of)---------+    
    +MOD_ATT:+-SUBJ:V-N-+--OBJ:V-N--+                  +-MOD_ATT:N-N+    
    |        |          |           |                  |            |    
 Sodium borohydride increases modification of phosphofructokinase [Pfk] .
MOD_ATT:N-N (borohydride,sodium)
SUBJ:V-N (increase,borohydride)
OBJ:V-N (increase,modification)
COMP:N-N(of) (modification,[Pfk])
MOD_ATT:N-N ([Pfk],phosphofructokinase)