+--MOD_ATT:N-N-+           +----COMP:V_PASS-N(in)----+-----COMP:N-N(of)----+     
  |      +MOD_ATT+SUBJ:V_PASS+             +MOD_ATT:N-A+            +MOD_ATT:+     
  |      |       |           |             |           |            |        |     
 GO : __SP__ __NODE__ is involved in transmembrane potential of cellular membrane .
MOD_ATT:N-N (__NODE__,go)
MOD_ATT:N-ADJ (__NODE__,__SP__)
SUBJ:V_PASS-N (involve,__NODE__)
COMP:V_PASS-N(in) (involve,potential)
MOD_ATT:N-ADJ (potential,transmembrane)
COMP:N-N(of) (potential,membrane)
MOD_ATT:N-ADJ (membrane,cellular)