N-Acetyltryptophan → D-Tryptophan

HRID 1180469

Reaktionsgleichung

Reaktionsgleichung von HRID 1180469
CC1(C)S[C@@H]2[C@H](NC([C@H](N)C3C=CC=CC=3)=O)C(=O)N2[C@H]1C(O)=O.CC(S[C@@H]1O[C@H](CO)[C@H](O)[C@H](O)[C@H]1O)C.C([NH:43][CH:44]([C:55]([OH:57])=[O:56])[CH2:45][C:46]1[C:54]2[C:49](=[CH:50][CH:51]=[CH:52][CH:53]=2)[NH:48][CH:47]=1)(=O)C.[C:58]([NH:61][C@H:62]([C:73]([OH:75])=[O:74])[CH2:63][C:64]1[C:72]2[C:67](=[CH:68][CH:69]=[CH:70][CH:71]=2)[NH:66][CH:65]=1)(=[O:60])[CH3:59]>CCCCCCCCCCCCCCCC[N+]1C=CC=CC=1.[Br-]>[NH2:43][C@@H:44]([C:55]([OH:57])=[O:56])[CH2:45][C:46]1[C:54]2[C:49](=[CH:50][CH:51]=[CH:52][CH:53]=2)[NH:48][CH:47]=1.[C:58]([NH:61][C@@H:62]([C:73]([OH:75])=[O:74])[CH2:63][C:64]1[C:72]2[C:67](=[CH:68][CH:69]=[CH:70][CH:71]=2)[NH:66][CH:65]=1)(=[O:60])[CH3:59]

Komponenten

7

Edukt 4

HCID 2002N-AcetyltryptophanHCID 6249AmpicillinHCID 656894isopropyl beta-D-thiogalactopyranosideHCID 700653N-Acetyl-L-tryptophan

Produkt 2

HCID 9060D-TryptophanHCID 439917N-acetyl-D-tryptophan

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8816Cetylpyridinium BromideKatalysator

Versuchsvorschrift

Cells of the E. coli transformant were inoculated on an LB agar plate. Each colony grown on the plate was inoculated with a toothpick to a well of a microtiter plate which contained 150 μl of LB culture medium containing 50 μg/ml ampicillin and 0.02 mM IPTG, and then the microtiter plate was covered with Breathable Sealing Membrane (Nalgene). The microtiter plate was incubated at 37° C. for 18 hours while being shaken. 10 μl of the culture medium solution was added to the reaction solution containing 300 mM Tris-hydrochloride buffer (pH 8.0), 0.1% cetylpyridinium bromide, 5% N-acetyl-DL-tryptophan, 1% N-acetyl-L-tryptophan, and distilled water in the wells of a microtiter plate. The plate was incubated at 25° C. for 1 hour while being shaken. Then, D-tryptophan produced from N-acetyl-D-tryptophan was quantified by colorimetry according to the TNBS method.

Aufarbeitung

  1. addition10 μl of the culture medium solution was added to the reaction solution
  2. distillationdistilled water in the wells of a microtiter plate
  3. waitThe plate was incubated at 25° C. for 1 hour
  4. stirringwhile being shaken

Quellen und Nachweise

ORD-Eintrag
ord-5b0d6c2848b6414cb8c8f68cb3cd146e
Quelldatensatz
uspto-grants-2007_10
Patentnummer
US07282356B2

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