Bioluminescence inhibition of bacterial luciferase by aliphatic alcohol, amine and carboxylic acid: Inhibition potency and mechanism

Shinya Yamasaki, Shuto Yamada, Kô Takehara

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The inhibitory effects of hydrophobic molecules on the bacterial luciferase, BL, luminescence reaction were analyzed using an electrochemically-controlled BL luminescence system. The inhibition potency of alkyl amines, C n NH 2 , and fatty acids, C m COOH (m = n - 1), on the BL reaction increased with an increase in the alkyl chain-length of these aliphatic compounds. C m COOH showed lower inhibition potency than C n NH 2 and alkyl alcohols, C n OH, data for which have been previously reported. To make clear the inhibition mechanisms of the aliphatic compounds on the BL reaction, the initial rate of the BL reaction was measured and analyzed using the Dixon plot and Cornish-Bowden plot. The C 12 OH inhibited the BL reaction in competition with the substrate C 11 CHO, while C 12 NH2 and C 11 COOH inhibited in an uncompetitive manner with the C 11 CHO. These results suggest that the alkyl chain-length and the terminal unit of the aliphatic compound determine the inhibition potency and the inhibition mechanism, respectively.

Original languageEnglish
Pages (from-to)41-46
Number of pages6
Journalanalytical sciences
Volume29
Issue number1
DOIs
Publication statusPublished - 2013

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry

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