+----------------------SUBJ:V-N---------------------+    
      +----------------COMP:N-N(of)---------------+       |    
      +----------COMP:N-N(of)---------+           |       |    
      |                  +-MOD_ATT:N-N+           |       |    
      |                  |            |           |       |    
 Interaction of phosphofructokinase [Pfk] and __NODE__ occurs .
COMP:N-N(of) (interaction,[Pfk])
COMP:N-N(of) (interaction,__NODE__)
MOD_ATT:N-N ([Pfk],phosphofructokinase)
SUBJ:V-N (occur,interaction)