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. 2022 Apr 7;27(8):2377. doi: 10.3390/molecules27082377

Table 5.

The binding scores and interactions of the examined three compounds, isolated from P. afra against COX-1 and COX-2.

Compounds Name COX-1 COX-2
Binding Affinity Amino Acids Types of Interaction Binding Affinity Amino Acids Types of Interaction
Stigmastan-3,5-diene −8.2 LEU A:99
LEU A:92
VAL A:116
VAL A:119
ILE A:89
TRP A:100
Alkyl
Alkyl
Alkyl
Alkyl
Alkyl
Pi Sigma
−7.3 VAL A:89
ALA A:111
ILE A:112
ILE A:92
LEU A:93
Alkyl
Alkyl
Alkyl
Alkyl
Alkyl
Androstenol −8.1 PRO A:153
CYS A:47
CYS A:41
GLN A:44
ARG A:469
LYS A:468
LEU A:152
Alkyl
Alkyl
Alkyl
H bond
Alkyl
Alkyl
Alkyl
−9.1 CYS A:36
CYS A:47
PRO A:153
ARG A:44
Alkyl
Alkyl
Alkyl
Doner-doner
Phthalimide, N-acetonyl- −8.1 HIS A: 388
GLN A: 203
ALA A: 202
THR A: 206
Amide pi stacked
Van der walls
Pi alkyl
Pi pi T shaped
CH bond
−8.2 HIS A:388
ALA A:202
Pi Pi T shaped
Pi alkyl