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N5,N5,N5-trimethyl-L-ornithine + 2-oxoglutarate + O2
(3S)-3-hydroxy-N5,N5,N5-trimethyl-L-ornithine + succinate + CO2
-
-
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
(3S)-3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
N6,N6-dimethyl-N6-ethyl-L-lysine + 2-oxoglutarate + O2
(3S)-3-hydroxy-N6,N6-dimethyl-N6-ethyl-L-lysine + succinate + CO2
-
-
-
?
N6,N6-dimethyl-N6-isopropyl-L-lysine + 2-oxoglutarate + O2
(3S)-3-hydroxy-N6,N6-dimethyl-N6-isopropyl-L-lysine + succinate + CO2
-
-
-
?
N6,N6-dimethyl-N6-propyl-L-lysine + 2-oxoglutarate + O2
(3S)-3-hydroxy-N6,N6-dimethyl-N6-propyl-L-lysine + succinate + CO2
-
-
-
?
N6-fluoromethyl-N6,N6-dimethyl-L-lysine + 2-oxoglutarate + O2
(3S)-3-hydroxy-N6-fluoromethyl-N6,N6-dimethyl-L-lysine + succinate + CO2
Nepsilon-trimethyllysine analogue that contains the fluoromethyl group can be used as a 1H and 19F NMR probe for studies on TMLH catalysis
-
-
?
N7,N7,N7-trimethyl-L-alpha-homolysine + 2-oxoglutarate + O2
(3S)-3-hydroxy-N7,N7,N7-trimethyl-L-alpha-homolysine + succinate + CO2
-
-
-
?
additional information
?
-
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2

(3S)-3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
-
-
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
(3S)-3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
-
-
-
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
(3S)-3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
-
-
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
(3S)-3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
the enzymatic hydroxylation occurs at the C-3 site of (2S)-Nepsilon-trimethyllysine substrate. Comparative NMR spectroscopic studies (with two enantiopure synthetic standards that possess 3R and 3S stereochemistry) on the enzymatically produced (2S)-3-hydroxy-Nepsilon-trimethyllysine reveal that TMLH exclusively catalyzes the formation of (3S)-3-hydroxy-Nepsilon-trimethyl-L-lysine, not forming any (3R)-3-hydroxy-Nepsilon-trimethyl-L-lysine diastereoisomer
-
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2

3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
-
N6,N6, N6-trimethyl-L-lysine is epsilon-N-trimethyl-L-lysine
-
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
-
-
-
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
-
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
-
-
-
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
-
-
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
-
-
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
-
N6,N6, N6-trimethyl-L-lysine is epsilon-N-trimethyl-L-lysine
-
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
-
-
-
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
-
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
-
N6,N6, N6-trimethyl-L-lysine is epsilon-N-trimethyl-L-lysine
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
-
N6,N6, N6-trimethyl-L-lysine is epsilon-N-trimethyl-L-lysine
-
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
-
carnitine biosynthesis
-
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
first enzyme of the L-carnitine biosynthesis
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
-
-
-
-
?
additional information

?
-
determination of the (2S,3S)-3-hydroxy-N6,N6,N6-trimethyl-L-lysine and N6,N6,N6-trimethyl-L-lysine is performed by ultraperformance liquid chromatographyâtandem mass spectrometry (UPLC/MS/MS) in positive ion electrospray mode
-
-
?
additional information
?
-
NMR spectrosopic structure analysis of substrates and products
-
-
?
additional information
?
-
NMR spectrosopic structure analysis of substrates and products, substrate specificity, overview. No or poor activity with dimethyllysine, methyllysine, lysine, D-trimethyllysine, 5-trimethylamino-1-aminopentane, trimethyllysine, 6-trimethylaminohexanoic acid, hexamethyllysine, N-acetyltrimethyllysine, trimethyldiaminobutyric acid, triethyllysine, symmetric and asymmetric dimethylarginines, mildronate, and gamma-butyrobetaine, structure-activity relationship study
-
-
?
additional information
?
-
-
NMR spectrosopic structure analysis of substrates and products, substrate specificity, overview. No or poor activity with dimethyllysine, methyllysine, lysine, D-trimethyllysine, 5-trimethylamino-1-aminopentane, trimethyllysine, 6-trimethylaminohexanoic acid, hexamethyllysine, N-acetyltrimethyllysine, trimethyldiaminobutyric acid, triethyllysine, symmetric and asymmetric dimethylarginines, mildronate, and gamma-butyrobetaine, structure-activity relationship study
-
-
?
additional information
?
-
-
enzyme is localized to the mitochondrial matrix, product formation is limited by 6-N-trimethyllysine transport across the mitochondrial inner membrane
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-
?
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N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
(3S)-3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
additional information
?
-
-
enzyme is localized to the mitochondrial matrix, product formation is limited by 6-N-trimethyllysine transport across the mitochondrial inner membrane
-
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2

(3S)-3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
-
-
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
(3S)-3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
-
-
-
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
(3S)-3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
-
-
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2

3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
-
-
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
-
carnitine biosynthesis
-
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
first enzyme of the L-carnitine biosynthesis
-
?
N6,N6,N6-trimethyl-L-lysine + 2-oxoglutarate + O2
3-hydroxy-N6,N6,N6-trimethyl-L-lysine + succinate + CO2
-
-
-
-
?
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evolution

the enzyme belongs to the family of 2-oxoglutarate (2OG)-dependent oxygenases
evolution
the enzyme belongs to the family of 2-oxoglutarate (2OG)-dependent oxygenases. Members of Fe(II) and 2-oxoglutarate-dependent oxygenases catalyze stereoselective hydroxylations of unactivated C-H bonds in various (bio)molecules, including proteins, DNA, and small molecule metabolites
evolution
the enzyme belongs to the non-heme Fe(II) and 2-oxoglutarate dependent oxygenases
metabolism

the enzyme catalyzes the first step in the biosynthesis of carnitine
metabolism
-
the enzyme catalyzes the first step in the biosynthesis of carnitine, i.e. L-3-hydroxy-4-N-N-N-trimethylaminobutyrate. Lysine in protein peptide linkages undergoes methylation of the 1-amino group to yield trimethyllysine, TML, which is released upon protein degradation. Muscle is the major source of TML. The released TML is further oxidised to gamma-butyrobetaine by the action of trimethyllysine dioxygenase, 3-hydroxy-N-trimethyllysine aldolase and 4-N-trimethylaminobutyraldehyde dehydrogenase
metabolism
the enzyme catalyses the first step in mammalian biosynthesis of carnitine, which plays a crucial role in fatty acid metabolism. Carnitine biosynthesis patway, overview
metabolism
trimethyllysine hydroxylase (TMLH) catalyses C-3 hydroxylation of Nepsilon-trimethyllysine in the first step of carnitine biosynthesis
metabolism
trimethyllysine hydroxylase (TMLH) catalyses C-3 hydroxylation of Nepsilon-trimethyllysine in the first step of carnitine biosynthesis in humans
metabolism
trimethyllysine hydroxylase (TMLH) catalyses the first step in carnitine biosynthesis, the conversion of N6,N6,N6-trimethyl-L-lysine to 3-hydroxy-N6,N6,N6-trimethyl-L-lysine
metabolism
trimethyllysine hydroxylase (TMLH) is involved in the first step of the physiologically important carnitine biosynthesis pathway. The enzyme catalyzes C-3 hydroxylation of (2S)-Nepsilon-L-trimethyllysine, to produce 3-hydroxy-Nepsilon-L-trimethyllysine, which then undergoes three additional enzymatic steps to the final L-carnitine
physiological function

trimethyllysine hydroxylase (TMLH) catalyses C-3 hydroxylation of Nepsilon-trimethyllysine in the first step of carnitine biosynthesis
physiological function
trimethyllysine hydroxylase (TMLH) catalyses C-3 hydroxylation of Nepsilon-trimethyllysine in the first step of carnitine biosynthesis in humans
additional information

residue Asp131 in TMLHis responsible for specific binding of the alpha-ammonium group of trimethyllysine
additional information
-
residue Asp131 in TMLHis responsible for specific binding of the alpha-ammonium group of trimethyllysine
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Hulse, J.D.; Ellis, S.R.; Henderson, L.M.
Carnitine biosynthesis. beta-Hydroxylation of trimethyllysine by an alpha-ketoglutarate-dependent mitochondrial dioxygenase
J. Biol. Chem.
253
1654-1659
1978
Rattus norvegicus
brenda
Henderson, L.M.; Nelson, P.J.; Henderson, L.
Mammalian enzymes of trimethyllysine conversion to trimethylaminobutyrate
Fed. Proc.
41
2843-2847
1982
Bos taurus
brenda
Sachan, D.S.; Hoppel, C.L.
Carnitine biosynthesis. Hydroxylation of N6-trimethyl-lysine to 3-hydroxy-N6-trimethyl-lysine
Biochem. J.
188
529-534
1980
Rattus norvegicus
brenda
Sachan, D.S.; Broquist, H.P.
Synthesis of carnitine from epsilon-N-trimethyllysine in post mitochondrial fractions of Neurospora crassa
Biochem. Biophys. Res. Commun.
96
870-875
1980
Neurospora crassa
brenda
Swiegers, J.H.; Vaz, F.M.; Pretorius, I.S.; Wanders, R.J.A.; Bauer, F.F.
Carnitine biosynthesis in neurospora crassa: identification of a cDNA coding for epsilon-N-trimethyllysine hydroxylase and its functional expression in Saccharomyces cerevisiae
FEMS Microbiol. Lett.
210
19-23
2002
Neurospora crassa
brenda
Vaz, F.M.; Ofman, R.; Westinga, K.; Back, J.W.; Wanders, R.J.A.
Molecular and biochemical characterization of rat epsilon-N-trimethyllysine hydroxylase, the first enzyme of carnitine biosynthesis
J. Biol. Chem.
276
33512-33517
2001
Mus musculus (Q91ZE0), Mus musculus, Rattus norvegicus (Q91ZW6), Homo sapiens (Q9NVH6), Homo sapiens
brenda
van Vlies, N.; Wanders, R.J.; Vaz, F.M.
Measurement of carnitine biosynthesis enzyme activities by tandem mass spectrometry: differences between the mouse and the rat
Anal. Biochem.
354
132-139
2006
Mus musculus, Rattus norvegicus
brenda
Monfregola, J.; Cevenini, A.; Terracciano, A.; van Vlies, N.; Arbucci, S.; Wanders, R.J.; DUrso, M.; Vaz, F.M.; Ursini, M.V.
Functional analysis of TMLH variants and definition of domains required for catalytic activity and mitochondrial targeting
J. Cell. Physiol.
204
839-847
2005
Homo sapiens, Mus musculus
brenda
Davis, A.T.; Monroe, T.J.
Carnitine deficiency and supplementation do not affect the gene expression of carnitine biosynthetic enzymes in rats
J. Nutr.
135
761-764
2005
Rattus norvegicus
brenda
van Vlies, N.; Ofman, R.; Wanders, R.J.; Vaz, F.M.
Submitochondrial localization of 6-N-trimethyllysine dioxygenase - implications for carnitine biosynthesis
FEBS J.
274
5845-5851
2007
Rattus norvegicus
brenda
Furusawa, H.; Sato, Y.; Tanaka, Y.; Inai, Y.; Amano, A.; Iwama, M.; Kondo, Y.; Handa, S.; Murata, A.; Nishikimi, M.; Goto, S.; Maruyama, N.; Takahashi, R.; Ishigami, A.
Vitamin C is not essential for carnitine biosynthesis in vivo: verification in vitamin C-depleted senescence marker protein-30/gluconolactonase knockout mice
Biol. Pharm. Bull.
31
1673-1679
2008
Mus musculus (Q91ZE0)
brenda
Fischer, M.; Hirche, F.; Kluge, H.; Eder, K.
A moderate excess of dietary lysine lowers plasma and tissue carnitine concentrations in pigs
Br. J. Nutr.
101
190-196
2009
Sus scrofa
brenda
Al Temimi, A.H.; Pieters, B.J.; Reddy, Y.V.; White, P.B.; Mecinovic, J.
Substrate scope for trimethyllysine hydroxylase catalysis
Chem. Commun. (Camb.)
52
12849-12852
2016
Homo sapiens (Q9NVH6), Homo sapiens
brenda
Lesniak, R.; Markolovic, S.; Tars, K.; Schofield, C.
Human carnitine biosynthesis proceeds via (2S,3S)-3-hydroxy-Nepsilon-trimethyllysine
Chem. Commun. (Camb.)
53
440-442
2017
Homo sapiens (Q9NVH6)
brenda
Vijayendar Reddy, Y.; Al Temimi, A.H.; Mecinovic, J.
Fluorinated trimethyllysine as a (19)F NMR probe for trimethyllysine hydroxylase catalysis
Org. Biomol. Chem.
15
1350-1354
2017
Homo sapiens (Q9NVH6)
brenda
Reddy, Y.V.; Al Temimi, A.H.; White, P.B.; Mecinovi?, J.
Evidence that trimethyllysine hydroxylase catalyzes the formation of (2S,3S)-3-hydroxy-N(epsilon)-trimethyllysine
Org. Lett.
19
400-403
2017
Homo sapiens (Q9NVH6), Homo sapiens
brenda
Kazaks, A.; Makrecka-Kuka, M.; Kuka, J.; Voronkova, T.; Akopjana, I.; Grinberga, S.; Pugovics, O.; Tars, K.
Expression and purification of active, stabilized trimethyllysine hydroxylase
Protein Expr. Purif.
104
1-6
2014
Homo sapiens (Q9NVH6)
brenda