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. 2020 Jan 8;16:50–59. doi: 10.3762/bjoc.16.7

Table 1.

Interactions between intermediates and TS structures with active site residues.

intermediate interacting species distance (Å) interaction type

A W186 C15 4.49 π-cation
I181 C15 3.80 dipole-cation

B N103 C6 4.66 dipole–cation (C=O)
N103 C7 4.72 dipole–cation (C=O)
N103 C8 4.41 dipole–cation (C=O)
T106 C6 3.96 dipole–cation (OH)
T106 C7 4.15 dipole–cation (OH)
T106 C8 5.33 dipole–cation (OH)
F107 C6 4.25 π–cation
F107 C7 5.53 π–cation
F107 C8 5.88 π–cation
I181 C6 5.15 dipole–cation
I181 C7 4.45 dipole–cation
I181 C8 4.14 dipole–cation

C O3 C3 4.20 anion–cation
F107 C3 3.65 π–cation
I181 C3 4.72 dipole–cation

D O3 C2 5.03 anion–cation
F107 C2 4.35 π–cation

E N103 C6 4.74 dipole–cation (C=O)
N103 C7 3.81 dipole–cation (C=O)
N103 C8 3.04 dipole–cation (C=O)
T106 C6 4.43 dipole–cation (OH)
T106 C7 4.25 dipole–cation (OH)
T106 C8 5.32 dipole–cation (OH)
F107 C6 4.66 π–cation
F107 C7 5.37 π–cation
F107 C8 5.54 π–cation
F149 C6 5.84 π–cation
F149 C7 6.42 π–cation
F149 C8 7.75 π-cation

G/H N103 C7 5.91 dipole–cation
T106 C7 5.27 dipole–cation (OH)
F149 C7 5.35 π–cation
I181 C7 3.08 dipole–cation (C=O)
W186 C7 6.48 π–cation

I N103 C10 5.44 dipole–cation
I181 C10 3.31 dipole–cation (C=O)
W186 C10 5.87 π–cation

TS structure interaction species distance Å interaction type

A_B I181 C15 3.85 dipole–cation
I181 C8 4.80 dipole–cation
W186 C15 4.48 π–cation
W186 C8 5.09 π–cation

B_C O3 C2 3.78
O3 C6 5.88 anion–cation
N103 C2 6.26
N103 C6 4.80 dipole–cation (C=O)
T106 C2 6.80
T106 C6 4.30 dipole–cation (OH)
F107 C2 4.12
F107 C6 4.36 π–cation
I181 C2 4.33
I181 C6 4.80 dipole–cation

C_D O3 C2 4.88 anion–cation
O3 C3 4.39 anion–cation
F107 C2 4.42 π–cation
F107 C3 3.61 π–cation
I181 C2 4.00 dipole–cation
I181 C3 4.85 dipole–cation

D_E O3 C2 4.66 anion–cation
O3 C6 5.82 anion–cation
F107 C2 4.55 π–cation
F107 C6 5.37 π–cation
F149 C2 5.93 π–cation
F149 C6 5.05 π–cation

E_G/H N103 C6 6.09 dipole–cation (C=O)
N103 C10 5.20 dipole–cation (C=O)
F107 C6 5.07 π–cation
F107 C10 5.15 π–cation
F149 C6 5.42 π–cation
I181 C6 3.62 dipole–cation (OH)
I181 C10 3.84 dipole–cation (OH)

G/H_I N103 C7 5.41 dipole–cation
N103 C10 5.81 dipole–cation
T106 C7 5.11 dipole–cation (OH)
T106 C10 7.29 dipole–cation (OH)
F149 C7 5.68 π–cation
F149 C10 7.76 π–cation
I181 C7 3.47 dipole–cation (C=O)
I181 C10 3.03 dipole–cation (C=O)
W186 C7 6.09 π–cation
W186 C10 5.70 π–cation