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BRENDA support

Ligand Aprotinin

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Basic Ligand Information

Molecular Structure
Picture of Aprotinin (click for magnification)
Molecular Formula
BRENDA Name
InChIKey
Molfile
C284H438N84O79S7
Aprotinin
LSSLPYCSPUVTCW-UHFFFAOYSA-N
Synonyms:
Trasylol

Roles as Enzyme Ligand

In Vivo Substrate in Enzyme-catalyzed Reactions (1 result)

EC NUMBER
PROVEN IN VIVO REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
aprotinin + H2O = ?
show the reaction diagram
-

Substrate in Enzyme-catalyzed Reactions (1 result)

EC NUMBER
REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
aprotinin + H2O = ?
show the reaction diagram
-

Activator in Enzyme-catalyzed Reactions (4 results)

EC NUMBER
COMMENTARY
LITERATURE
ENZYME 3D STRUCTURE
activates DNase1/3-like activity
-
augments binding of hepatocytes from mice to immobilized plasmin
-
0.3 microM, 103% activity
-

Inhibitor in Enzyme-catalyzed Reactions (134 results)

EC NUMBER
COMMENTARY
LITERATURE
ENZYME 3D STRUCTURE
serine protease inhibitor, 0.0003 mM, 74% inhibition of purified sialyltransferase-1
-
10 mM, 26% inhibition
-
inhibits DNase1 as a result of plasmin inhibition
-
the recombinant enzyme shows 58.9% relative activity in the presence of 0.001 mM aprotinin on hydrolysis of L-Leu-7-amido-4-methylcoumarin
-
82% residual activity at 0.1 mM
-
34% residual activity at 0.25 mg/ml
-
0.08 mM, 60% loss of activity
-
0.1 mM, proPoCtX: 31.9% inhibition, native PoCtX: 51.3% inhibition
-
0.05 mM, 97% inhibition
-
i.e. trasylol, weak
-
95% inhibition of factor Xa and 2% inhibition of prothrombinase complex activity at 10 U/ml
-
from bovine
-
weak
-
34% inhibition at 0.1 g/ml
-
16% inhibition at 0.001 mM
-
30% inhibition at 2.5 mM
-
weak inhibition at 0.02 mM
-
55.22% inhibition at 0.1 mM
-
0.1 mM, 64% inhibition
-
0.015 mM, 23% inhibition
-
25.08% inhibition at 0.1 mM
-
36.94% inhibition at 0.1 mM
-
72.6% residual activity at 1 mM
-
inhibits the recombinant enzyme expressed in Escherichia coli strain BL21 or DELTAcroP mutant strain of Citrobacter rodentium, in vivo. Docking model of the aprotinin-omptin complex. Lys15 of aprotinin interacts with Glu27 and Asp208 (OmpT numbering), which are the two negatively charged residues that form the S1 specificity pocket of omptins
-
markedly decreases enzymatic activity
-
22.4% inhibition
-
0.1 mg/ml
-
11% inhibition at 0.025 mM
-
0.0133 mg/ml, 53.62% inhibition
-
0.1 mM, 14% inhibition
-

Enzyme Kinetic Parameters

Ki Value (24 results)

EC NUMBER
KI VALUE [MM]
KI VALUE MAXIMUM [MM]
COMMENTARY
LITERATURE
0.0117
-
pH and temperature not specified in the publication
0.000027
-
pH 8.0, 37°C
0.0000164
-
in 0.1 M Tris-HCl, pH 7.4, 0.01% (v/v) Tween 80 at 25°C
0.00000018
-
pH and temperature not specified in the publication
0.00000088
-
pH 8.2, 37°C
0.0000014
-
-

IC50 Value (1 result)

EC NUMBER
IC50 VALUE
IC50 VALUE MAXIMUM
COMMENTARY
LITERATURE
0.0001024
-
-

References & Links

Links to other databases for Aprotinin

EXTERNAL LINKS