Ligand trans-zeatin

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Basic Ligand Information

Molecular Structure
Picture of trans-zeatin (click for magnification)
Molecular Formula
BRENDA Name
InChIKey
C10H13N5O
trans-zeatin
UZKQTCBAMSWPJD-FARCUNLSSA-N
Synonyms:
6-[(E)-4-hydroxy-3-methylbut-2-enylamino]purine, cytokinin, zeatin

Roles as Enzyme Ligand

In Vivo Substrate in Enzyme-catalyzed Reactions (11 results)

EC NUMBER
LITERATURE
REACTION DIAGRAM
PROVEN IN VIVO REACTION
ENZYME 3D STRUCTURE
show the reaction diagram
trans-zeatin + NADPH = dihydrozeatin + NADP+
-
show the reaction diagram
UDP-D-xylose + trans-zeatin = ?
-

Substrate in Enzyme-catalyzed Reactions (35 results)

EC NUMBER
LITERATURE
REACTION DIAGRAM
REACTION
ENZYME 3D STRUCTURE
show the reaction diagram
cytokinin + phosphate = ? + alpha-D-ribose 1-phosphate
-
show the reaction diagram
zeatin + 5-phospho-alpha-D-ribose 1-diphosphate = zeatin riboside 5'-phosphate + diphosphate
-
show the reaction diagram
O-acetyl-L-serine + zeatin = lupinate + acetate
-
show the reaction diagram
6-[(E)-4-hydroxy-3-methylbut-2-enylamino]purine + H2O = ?
-

Product in Enzyme-catalyzed Reactions (1 result)

EC NUMBER
LITERATURE
REACTION DIAGRAM
REACTION
ENZYME 3D STRUCTURE
-
show the reaction diagram
trans-zeatin riboside + phosphate = trans-zeatin + alpha-D-ribose 1-phosphate
-

Activator in Enzyme-catalyzed Reactions (3 results)

COMMENTARY
EC NUMBER
LITERATURE
ENZYME 3D STRUCTURE

Inhibitor in Enzyme-catalyzed Reactions (4 results)

COMMENTARY
EC NUMBER
LITERATURE
ENZYME 3D STRUCTURE
enhances enzyme activity by 35%
plant hormones, inhibition less strong than for adenine
-

3D Structure of Enzyme-Ligand-Complex (PDB) (16 results)

Enzyme Kinetic Parameters

kcat Value (Turnover Number) (2 results)

COMMENTARY
EC NUMBER
LITERATURE
TURNOVER NUMBER [1/S]
TURNOVER NUMBER MAXIMUM [1/S]
30°C, pH 7.4
135
-
-
0.45
-

KM Value (17 results)

COMMENTARY
EC NUMBER
KM VALUE [MM]
KM VALUE MAXIMUM [MM]
LITERATURE
low molecular weight isoenzyme, instability of the isoenzyme after gel filtration may contibute to the variation between experiments
0.1
0.23
high molecular weight isoenzyme
0.07
-
-
0.01
-
pH 9.0
0.006
-
pH 7.0
0.014
-
pH 6.5
0.06
-
30°C, pH 7.4
0.009
-
-
0.15
-
pH 8.0, 30°C

References & Links

Links to other databases for trans-zeatin

ChEBI
PubChem
-
PubChem