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

BRENDA support

Ligand D-cycloserine

Please wait a moment until all data is loaded. This message will disappear when all data is loaded.

Basic Ligand Information

Molecular Structure
Picture of D-cycloserine (click for magnification)
Molecular Formula
BRENDA Name
InChIKey
Molfile
C3H6N2O2
D-cycloserine
DYDCUQKUCUHJBH-UWTATZPHSA-N
Synonyms:
(4R)-4-amino-1,2-oxazolidin-3-one, (4R)-4-amino-3-isoxazolidinone, D-oxamycin, R-cycloserine

Related pathways

Pathway Source
Pathways
MetaCyc
D-cycloserine biosynthesis, D-cycloserine inhibition of pyridoxal 5'-phosphate


Show all pahtways known for Show all BRENDA pathways known for D-cycloserine

Roles as Enzyme Ligand

In Vivo Product in Enzyme-catalyzed Reactions (2 results)

EC NUMBER
PROVEN IN VIVO REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE

Substrate in Enzyme-catalyzed Reactions (3 results)

EC NUMBER
REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
D-cycloserine + H2O + O2 = ? + NH3 + H2O2
show the reaction diagram
-
D-cycloserine + oxidized 2,6-dichloroindophenol + H2O = ?
show the reaction diagram
-
D-cycloserine = ?
show the reaction diagram
-

Product in Enzyme-catalyzed Reactions (3 results)

EC NUMBER
REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE

Inhibitor in Enzyme-catalyzed Reactions (60 results)

EC NUMBER
COMMENTARY
LITERATURE
ENZYME 3D STRUCTURE
1 mM, 48% loss of activity
-
18% residual activity at 5 mM
-
82% loss of activity at 5 mM
-
weak
-
1 mM, 40% inhibition
-
DCS, mechanism-based inhibition of the Mycobacterium tuberculosis branched-chain aminotransferase by D-cycloserine, mechanism and enzyme-bound three-dimensional structure with a role of residue C196, overview. Time and concentration-dependent inactivation. The structure of the covalent D-cycloserine-PMP adduct bound to MtIlvE reveals that the D-cycloserine ring is planar and aromatic
-
DCS, commercialized as Seromycin, a reversible inhibitor of AGT. DCS displays a time-dependent binding mainly generating an oxime intermediate, inhibition mechanism, overview
-
0.5 mM; 20% inhibition
-
inhibitor of PLP-dependent enzymes, inhibits CPSIT_0959 protein catalytic activity
-
weak
-
1 mM, 98% inhibition
-
35% inhibition at 0.1 mM in the absence of Na2S
-
1 mM, 23% inhibition
-
2 mM, 64% inhibition
-

Metals and Ions (1 result)

EC NUMBER
COMMENTARY
LITERATURE
ENZYME 3D STRUCTURE
the enzyme activity is increased 1.6fold at 0.1 mM D-cycloserine in the presence of Na2S
-

3D Structure of Enzyme-Ligand-Complex (PDB) (1 result)

EC NUMBER
ENZYME 3D STRUCTURE

Enzyme Kinetic Parameters

kcat Value (Turnover Number) (1 result)

EC NUMBER
TURNOVER NUMBER [1/S]
TURNOVER NUMBER MAXIMUM [1/S]
COMMENTARY
LITERATURE
0.77
-
pH 8.5, 25°C

KM Value (2 results)

EC NUMBER
KM VALUE [MM]
KM VALUE MAXIMUM [MM]
COMMENTARY
LITERATURE
83.5
-
pH 8.5, 25°C
200
-
-

Ki Value (17 results)

EC NUMBER
KI VALUE [MM]
KI VALUE MAXIMUM [MM]
COMMENTARY
LITERATURE
2.02
-
-
0.000011
-
pH 8.0, 37°C

IC50 Value (10 results)

EC NUMBER
IC50 VALUE
IC50 VALUE MAXIMUM
COMMENTARY
LITERATURE

References & Links

Links to other databases for D-cycloserine

EXTERNAL LINKS