2004
DOI: 10.1002/ange.200454261
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Ein SECM‐Detektionsmodus mit verbesserter Empfindlichkeit und lateraler Auflösung: Detektion von Galactosidaseaktivität mit Signalverstärkung durch Glucosedehydrogenase

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Cited by 7 publications
(3 citation statements)
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“…396 Further options for optimization are the use of galactosidase as the label enzyme (avoidance of the air‐sensitive substrate p ‐aminophenyl phospate for ALP) and the use of catalytical signal enhancement by coupling a second enzymatic reaction (Figure 22) 334. 347 In this case, p ‐quinone imine, which is formed at the UME from p ‐aminophenol (PAP), acts as a cofactor for glucose dehydrogenase. In this reaction, PAP is regenerated and can be detected at the UME.…”
Section: Application Areas and Specific Requirementsmentioning
confidence: 99%
“…396 Further options for optimization are the use of galactosidase as the label enzyme (avoidance of the air‐sensitive substrate p ‐aminophenyl phospate for ALP) and the use of catalytical signal enhancement by coupling a second enzymatic reaction (Figure 22) 334. 347 In this case, p ‐quinone imine, which is formed at the UME from p ‐aminophenol (PAP), acts as a cofactor for glucose dehydrogenase. In this reaction, PAP is regenerated and can be detected at the UME.…”
Section: Application Areas and Specific Requirementsmentioning
confidence: 99%
“…À15 mol für murines Immunglobulin G. [346,396] Weiteres Optimierungspotenzial besteht im Einsatz des Enzyms Galactosidase (Vermeidung des luftempfindlichen Substrats paraAminophenylphosphat für ALP) und in der Nutzung einer katalytischen Nachverstärkung des Signals durch Ankopplung einer zweiten enzymatischen Reaktion (Abbildung 22). [334,347] In diesem Fall wirkt das an der UME aus pAminophenol (PAP) gebildete p-Chinonimin als Cofaktor für Glucosedehydrogenase. Dabei wird erneut PAP gebildet und kann an der UME detektiert werden.…”
Section: Enzymmarkierungenunclassified
“…The normalized current I T = i T /i T,Nthus decreases with increasing mediator concentration at such samples. Similar effects are common for the investigation of immobilized redox enzymes 49,50.…”
mentioning
confidence: 70%