+---------------------------------COMP:V-N(In)--------------------------------+--------------------OBJ:V-N--------------------+   
            |        +--MOD_ATT:N-ADJ-+----------------------SUBJ:V-N---------------------+            +-------COMP:N-N(of)-------+       |   
            |        |      +MOD_ATT:N+-------------------OBJ:V-N-------------------+     |            |           +-MOD_ATT:N-ADJ+       |   
        +MOD+        |      |   +MOD_A+         +--------------SUBJ:V-N-------------+     +COMP:V-N(in)+           |       +MOD_AT+       |   
        |   |        |      |   |     |         |                                   |     |            |           |       |      |       |   
 In TGR 1 cells , mutant __SP__ C __NODE__ [__NODE__] gene ( homozygous knockout ) is involved in expression of __SP__ PFK C [__NODE__] mRNA .
MOD_ATT:N-N (cell,1)
MOD_ATT:N-ADJ (__NODE__,mutant)
MOD_ATT:N-ADJ (__NODE__,__SP__)
MOD_ATT:N-N (__NODE__,C)
OBJ:V-N (be,__NODE__)
SUBJ:V-N (be,[__NODE__])
COMP:V-N(In) (involve,cell)
SUBJ:V-N (involve,__NODE__)
COMP:V-N(in) (involve,expression)
OBJ:V-N (involve,mRNA)
COMP:N-N(of) (expression,[__NODE__])
MOD_ATT:N-ADJ ([__NODE__],__SP__)
MOD_ATT:N-N ([__NODE__],C)