Any feedback?
Please rate this page
(all_enzymes.php)
(0/150)

BRENDA support

5.3.99.5: thromboxane-A synthase

This is an abbreviated version!
For detailed information about thromboxane-A synthase, go to the full flat file.

Word Map on EC 5.3.99.5

Reaction

(5Z,13E)-(15S)-9alpha,11alpha-epidioxy-15-hydroxyprosta-5,13-dienoate
=
(5Z,13E)-(15S)-9alpha,11alpha-epoxy-15-hydroxythromboxa-5,13-dienoate

Synonyms

CYP5A1, Synthetase, thromboxane, TBXAS1, Thromboxan synthetase, thromboxane A synthase 1, thromboxane A-synthase, thromboxane A2 synthase, thromboxane A2 synthase 1, Thromboxane A2 synthetase, thromboxane synthase, Thromboxane synthetase, TXA synthase, TxA-synthase, TXA2 synthase, TXAS, TXS, TXSA, TxSI

ECTree

     5 Isomerases
         5.3 Intramolecular oxidoreductases
             5.3.99 Other intramolecular oxidoreductases
                5.3.99.5 thromboxane-A synthase

Engineering

Engineering on EC 5.3.99.5 - thromboxane-A synthase

Please wait a moment until all data is loaded. This message will disappear when all data is loaded.
PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
A408L
-
42% of wild-type activity
A415V
-
82% of wild-type activity
C480H
-
no activity
C480S
-
no activity
C480Y
-
no activity
E134D
-
35% of wild-type activity
E135D
-
123% of wild-type activity
E414D
-
39% of wild-type activity
F409Y
-
42% of wild-type activity
F411Y
-
38% of wild-type activity
L488P
-
in alpha-helix, indroducing a coil in the secondary structure, crucial for enzyme activity
L83P
-
in beta-sheet, indroducing a coil in the secondary structure, crucial for enzyme activity
N110I
-
no activity
Q482W
-
changing an aliphatic amino acid with low steric hindrance into an aromatic amino acid with high steric hindrance in the vicinitx of the catalytic site, modifying the interaction of the enzyme-substarte complex, crucial for enzyme activity
R137A
-
2% of wild-type activity
R137K
-
5% of wild-type activity
R410G
-
46% of wild-type activity
R413K
-
1% of wild-type activity
R431E
-
decreased enzyme activity, 1% residual activity
R431K
-
decreased enzyme activity, 1% residual activity
R478A
-
no activity
T412S
-
41% of wild-type activity
V136A
-
69% of wild-type activity
W133F
W203F
-
site-directed mutagenesis, ligand binding analysis compared to the wild-type enzyme
W31F
-
site-directed mutagenesis, ligand binding analysis compared to the wild-type enzyme
W31F/W65F/W133F/W203F/W466F
-
site-directed mutagenesis, ligand binding analysis compared to the wild-type enzyme
W466F
-
site-directed mutagenesis, ligand binding analysis compared to the wild-type enzyme
W65F
-
site-directed mutagenesis, ligand binding analysis compared to the wild-type enzyme
additional information
-
treatment with enzyme-specific RNAi results in increased levels of steroidogenic acute regulatory protein StAR and steroidogenesis. Inhibition of enzyme activity reduces the levels of StaR transcriptional repressor DAX-1