+--MOD_ATT:N-N--+----SUBJ:V_PASS-N----+                           
    |       +MOD_ATT+--APPOS-+            +COMP:V_PAS+COMP:N-N(o+     
    |       |       |        |            |          |          |     
 Mutant __NODE__ protein ( R587W ) is involved in efflux of __NODE__ .
MOD_ATT:N-N (protein,mutant)
MOD_ATT:N-ADJ (protein,__NODE__)
APPOS (protein,R587W)
SUBJ:V_PASS-N (involve,protein)
COMP:V_PASS-N(in) (involve,effluence)
COMP:N-N(of) (effluence,__NODE__)