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The enzyme appears in viruses and cellular organisms
Synonyms
galactosyl-sphingosine transferase, galactosyltransferase, uridine diphosphogalactose-sphingosine beta-, psychosine-UDP galactosyltransferase, psychosine-uridine diphosphate galactosyltransferase, UDPgalactose:sphingosine O-galactosyl transferase, uridine diphosphogalactose-sphingosine beta-galactosyltransferase,
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galactosyl-sphingosine transferase
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galactosyltransferase, uridine diphosphogalactose-sphingosine beta-
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psychosine-UDP galactosyltransferase
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psychosine-uridine diphosphate galactosyltransferase
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UDPgalactose:sphingosine O-galactosyl transferase
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uridine diphosphogalactose-sphingosine beta-galactosyltransferase
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UDP-alpha-D-galactose + sphingosine = UDP + psychosine
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hexosyl group transfer
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UDP-galactose:sphingosine 1-beta-galactosyltransferase
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UDPgalactose + D-1,3,4-trihydroxy-2-aminooctadecane
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weak activity
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UDPgalactose + DL-1-hydroxy-2-amino-octadecane
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UDPgalactose + DL-erythro-1,3-dihydroxy-2-amino-4-cis-octadecene
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UDPgalactose + DL-erythro-1,3-dihydroxy-2-amino-4-heptadecyne
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weak activity
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UDPgalactose + DL-erythro-trans-sphingosine
UDP + psychosine
UDPgalactose + DL-threo-1,3-dihydroxy-2-amino-4-cis-octadecene
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weak activity
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UDPgalactose + DL-threo-1,3-dihydroxy-2-amino-4-octadecyne
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UDPgalactose + DL-threo-1,3-dihydroxy-2-amino-4-trans-heptadecene
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weak activity
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UDPgalactose + DL-threo-1,3-dihydroxy-2-amino-4-trans-nonadecene
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weak activity
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UDPgalactose + DL-threo-1,3-dihydroxy-2-amino-4-trans-octadecene
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weak activity
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UDPgalactose + DL-threo-1,3-dihydroxy-2-aminooctadecane
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weak activity
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UDPgalactose + N-acetyl-DL-threo-trans-sphingosine
UDP + N-acetylpsychosine
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UDPgalactose + DL-1-hydroxy-2-amino-octadecane
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weak activity
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UDPgalactose + DL-1-hydroxy-2-amino-octadecane
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UDPgalactose + DL-erythro-1,3-dihydroxy-2-amino-4-cis-octadecene
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weak activity
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UDPgalactose + DL-erythro-1,3-dihydroxy-2-amino-4-cis-octadecene
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UDPgalactose + DL-erythro-trans-sphingosine
UDP + psychosine
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maximal activity
i. e. galactosylsphingosine
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UDPgalactose + DL-erythro-trans-sphingosine
UDP + psychosine
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basic structure for the acceptor seems to be a 1-hydroxy-2-amino hydrocarbon of about 18 carbon atoms
i. e. galactosylsphingosine
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UDPgalactose + DL-erythro-trans-sphingosine
UDP + psychosine
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maximal activity
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UDPgalactose + DL-erythro-trans-sphingosine
UDP + psychosine
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basic structure for the acceptor seems to be a 1-hydroxy-2-amino hydrocarbon of about 18 carbon atoms
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UDPgalactose + DL-threo-1,3-dihydroxy-2-amino-4-octadecyne
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weak activity
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UDPgalactose + DL-threo-1,3-dihydroxy-2-amino-4-octadecyne
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Mg2+
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2-8 mM, stimulation
Mn2+
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2-3 mM, slight stimulation
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Tween-20
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4 mg/ml, highest activity with DL-erythro-trans-sphingosine, solubilizing effect
Tween-20
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4 mg/ml, highest activity with DL-erythro-trans-sphingosine, solubilizing effect
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additional information
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activity in central nervous tissue increases with age, maximal activity at 25 postnatal days
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7 - 9
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70% of maximal activity at pH 7, 85% of maximal activity at pH 9.0
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37
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assay at
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normal and twitcher mice
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highest activity together with spinal cord
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highest activity together with brainstem
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myelin
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lyophilized powder is indefinitely stable in the deep-frozen
lyophilized powder is indefinitely stable in the deep-frozen
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lyophilized powder is indefinitely stable in the deep-frozen
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partial
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Cleland, W.W.; Kennedy, E.P.
The enzymatic synthesis of psychosine
J. Biol. Chem.
235
45-51
1960
Cavia porcellus, Rattus norvegicus
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Neskovic, N.M.; Sarlieve, L.L.; Mandel, P.
Subcellular and submicrosomal distribution of glycolipid-synthesizing transferases in young rat brain
J. Neurochem.
20
1419-1430
1973
Rattus norvegicus
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Mitsuo, K.; Kobayashi, T.; Shinnoh, N.; Goto, I.
Biosynthesis of galactosylsphingosine (psychosine) in the twitcher mouse
Neurochem. Res.
14
899-903
1989
Mus musculus
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