Potassium Chloride → Udp-Glucose

HRID 1079382

Reaktionsgleichung

Reaktionsgleichung von HRID 1079382
CN/C(/NCCSCC1[O:17][C:16](CN(C)C)=CC=1)=C\[N+]([O-])=O.Cl.C1N(CCS(O)(=O)=O)CC[O:25]C1.[OH2:35].[Mg+2].[Cl-].[Cl-].C1N=C(N)C2N=CN([C@@H:48]3[O:52][C@H:51]([CH2:53][O:54][P:55]([O:58][P:59]([O:62][CH2:63][C@H:64]4[O:68][C@@H:67]([N:69]5[CH:74]=[C:73]([C:75]([NH2:77])=[O:76])CC=[CH:70]5)[C@H:66]([OH:78])[C@@H:65]4[OH:79])([OH:61])=[O:60])([OH:57])=[O:56])[C@@H:50]([OH:80])[C@H:49]3[OH:81])C=2N=1.C(N(CC(O)=O)CC(O)=O)CN(CC(O)=O)CC(O)=O.[Cl-].[K+]>>[CH:73]1[C:75](=[O:76])[NH:77][C:70](=[O:35])[N:69]([C@@H:67]2[O:68][C@H:64]([CH2:63][O:62][P:59]([O:58][P:55]([O:54][C@H:53]3[O:52][C@H:48]([CH2:16][OH:17])[C@@H:49]([OH:81])[C@H:50]([OH:80])[C@H:51]3[OH:25])([OH:57])=[O:56])([OH:61])=[O:60])[C@@H:65]([OH:79])[C@H:66]2[OH:78])[CH:74]=1

Komponenten

7

Edukt 6

HCID 4873Potassium ChlorideHCID 6049Ethylenediaminetetraacetic AcidHCID 439153NadhHCID 3033332Ranitidine Hydrochloride2×HCID 5360315Magnesium ChlorideHCID 162184172-(N-Morpholino)ethanesulfonic acid hydrate

Produkt 1

HCID 8629Udp-Glucose

Versuchsvorschrift

N-acylsphingosine glucosyltransferase (EC 2.4.1.80) activity was measured in rat brain homogenates and mouse macrophage tissue cultured cell (WEHI-3B) homogenates using a method adapted as follows from published conventional procedures [Vunnam and Radin, Chem. & Phys. of Lipids 26, 265-278 (1980); Shukla and Radin, Arch Biochem. Biophys. 283, 372-378 (1990)]: Dioleoylphosphatidylcholine and cerebroside liposomes containing 200 nmol ceramides Type IV (Sigma) were added to a reaction mixture (100 μl) composed of 40 mM 2-[N-morpholino]ethanesulfonic acid (MES) buffer, pH 6.5, 5 mM MnCl2, 2.5 mM MgCl2, 1 mM NADH and 8 μM UDP-[14C]-glucose (318 mCi/mmol, Amersham International, Amersham, U.K.). After incubation at 37° C. for 1-2 hr. the reaction was stopped by the addition of EDTA (25 mM) and KCl (50 mM). Radiolabelled glycolipids were extracted with 500 μl of chloroform:methanol (2:1 v/v) for 10 min. and the phases separated. The lower phase was washed twice with Folch theoretical upper phase and portions taken for scintillation counting. When imino sugars were tested for inhibitory activity, these were added at appropriate concentrations to homogenates and preincubated for 10 min. before sonication with ceramide containing liposomes. Control reactions were performed with liposomes containing no ceramide to measure the activity of transfer to endogenous acceptors.

Aufarbeitung

  1. extractionRadiolabelled glycolipids were extracted with 500 μl of chloroform:methanol (2:1 v/v) for 10 min.
  2. customthe phases separated
  3. washThe lower phase was washed twice with Folch theoretical upper phase and portions
  4. additionthese were added at appropriate concentrations to homogenates
  5. custompreincubated for 10 min. before sonication with ceramide containing liposomes
  6. additioncontaining no ceramide

Quellen und Nachweise

ORD-Eintrag
ord-a19b9ef2148c4930801ef5a0be5f71e9
Quelldatensatz
uspto-grants-1996_12
Patentnummer
US05580884

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