Steady-state bioluminescence of bacterial luciferase using electrochemical regeneration of flavin substrate and its application to inhibitory analysis.

Bioelectrochemistry

Department of Chemistry, Faculty of Sciences, Kyushu University, 4-2-1, Ropponmatsu, Chuo-ku, Fukuoka 810-8560, Japan.

Published: April 2009

The model system for the biological reaction using a bacterial luciferase (BL) was developed and applied to the inhibitory analysis of the hydrophobic molecules for enzymatic reactions. The homemade flow electrochemical luminescence cell was embedded in the BL reaction system to regenerate the reduced form of the flavin mononucleotide, which is one of the substrates of the BL luminescence reaction, and to measure the luminescence intensity. The constant intensity of the continuous BL luminescence was observed using the continuous-flow BL reaction system. The proposed system was successfully applied to the inhibitory reaction of dodecaneamide on the BL luminescence reaction.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.bioelechem.2008.12.002DOI Listing

Publication Analysis

Top Keywords

bacterial luciferase
8
inhibitory analysis
8
applied inhibitory
8
reaction system
8
luminescence reaction
8
reaction
6
luminescence
5
steady-state bioluminescence
4
bioluminescence bacterial
4
luciferase electrochemical
4

Similar Publications

Follicular dendritic cell-secreted protein (FDC-SP) is produced by follicular dendritic cells, periodontal ligament and junctional epithelium (JE). JE exists immediately apical to the bottom of the pocket and binds enamel with hemidesmosomes to protect the periodontium from bacterial infection. To analyze the transcriptional regulation of the FDC-SP gene by interleukin-6 (IL-6), we performed real-time PCR, Western blotting, immunofluorescence, luciferase (LUC) assays, gel mobility shift and chromatin immunoprecipitation (ChIP) assays using Ca9-22 and Sa3 gingival epithelial cells.

View Article and Find Full Text PDF

Cell wall components of gut commensal bacteria stimulate peritrophic matrix formation in malaria vector mosquitoes through activation of the IMD pathway.

PLoS Biol

January 2025

State Key Laboratory of Genetic Engineering, School of Life Sciences, Department of Infectious Diseases, Zhongshan Hospital, Fudan University, Shanghai, China.

The peritrophic matrix (PM) acts as a physical barrier that influences the vector competence of mosquitoes. We have previously shown that gut microbiota promotes PM formation in Anopheles stephensi, although the underlying mechanisms remain unclear. In this study, we identify that the cell wall components of gut commensal bacteria contribute to PM formation.

View Article and Find Full Text PDF

FADD cooperates with Caspase-8 to positively regulate the innate immune response and promote apoptosis following bacterial infection in Japanese eel.

Fish Shellfish Immunol

January 2025

Jimei University, College of Fisheries, Key Laboratory of Healthy Mariculture for the East China Sea, Xiamen, 361021, China; Jimei University, College of Fisheries, Engineering Research Center of the Modern Technology for Eel Industry, Xiamen, 361021, China. Electronic address:

Fas-associated protein with Death Domain (FADD) is a crucial signaling component of apoptosis and a vital immunomodulator on inflammatory signaling pathways. However, information on FADD-mediated apoptosis and immune regulation is limited in teleost. We herein cloned a FADD homolog, AjFADD, from Japanese eel (Anguilla japonica).

View Article and Find Full Text PDF

Modified dosing schedule efficacy of fosmidomycin and clindamycin against murine malaria Plasmodium berghei.

Int J Parasitol Drugs Drug Resist

December 2024

W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, 615 N. Wolfe St., Baltimore, MD, 21210, USA. Electronic address:

Fosmidomycin and clindamycin target the Plasmodium apicoplast. Combination clinical trials have produced mixed results with the primary problem being the recrudescent infection frequency by day 28. Given that antibiotic efficacy against bacterial infections often depends on the constant drug presence over several days, we hypothesized that the antimalarial blood or liver stage efficacy of fosmidomycin and clindamycin could be improved by implementing a more frequent dosing schedule.

View Article and Find Full Text PDF

The research used bacterial biosensors containing bacterial luciferase genes to monitor changes in the environment in real-time. In this work to express four different gene constructs: recA:luxCDABE, soxS:luxCDABE, micF:luxCDABE, and rpoB:luxCDABE in Escherichia coli SM lux biosensor after exposure to three different antibiotics (nalidixic acid, ampicillin, kanamycin) and diclofenac was determined. It was found that incubation of the E.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!