Ligand Adjacent Products from assay* -OH Distance to His271(A°) Distance to AdoMet-S(A°) H-bond vdW+Hbond+ desolvation energy
Quercetin 3'-MeQ 3'-OH 2.6 4 His185•••1O 178.82nM
3-MeQ 3-OH 4.6 6.6 Asp272•••4'OH 3-MeQ
    Glu299•••4'OH  
7-MeQ 7-OH 5.1 5.9 Asp272···3'OH  
    Leu128···7OH  
  Gln325···5OH 146.01nM
  Cyc318···7OH  
3-MeQ 3'-OH 3.9 11.2 Asp272···3'OH N/A
3, 3'-diMeQ 4'-OH 3.8 10.8 Asp272···4'OH  
    Leu128···7OH  
3'-MeQ 4'-OH 3.7 7 Glu299···4'OH N/A
3',4'-diMeQ       His185···1O  
   
7-MeQ 3'-OH 4.2 5.3 His185···1O N/A
7, 3'-diMeQ 4'-OH 4.6 6.6 Glu331···3'OH  
*Reaction products were characterized by TLC, HPLC and LC-MS as described in the Methods section.
Table 6: NtOMT2 modeling data and reaction products from enzyme assays.