Expression of bacterial luciferase enzyme (lux) in eukaryotic cells would provide a new bioreporter system for in vivo imaging and diagnostics technology. In spite of this, until now only a few efforts have been made to express bacterial luciferase enzyme in eukaryotic cells. We attempted to synthesize an expression construct of luxA and luxB genes from Vibrio fischeri. The luxA and luxB genes ...

Thirty-four strains of nonfermentative, respiratory, luminous bacteria were isolated from samples of squid ink and seawater from depths of 200 to 300 m in the Alboran Sea. Although these strains had a few properties similar to properties of Shewanella (Alteromonas) hanedai, they did not cluster phenotypically with any previously described bacterium. The nucleotide sequence of a 740-bp segment o...

Bacterial luciferases (LuxAB) can be readily classed as slow or fast decay luciferases based on their rates of luminescence decay in a single turnover assay. Luciferases from Vibrio harveyi and Xenorhabdus (Photorhabdus) luminescens have slow decay rates, and those from the Photobacterium genus, such as Photobacterium fisheri, P. phosphoreum and P. leiognathi, have rapid decay rates. By substit...

The luxA and luxB structural genes of Vibrio harveyi luciferase [alkanal,reduced FMN:oxygen oxidoreductase (1-hydroxylating, luminescing), EC 1.14.14.3] were introduced into a plant expression vector and transferred into tobacco and carrot cells by Agrobacterium-mediated or direct DNA transformation. Simultaneous expression of the luxA and luxB genes was monitored by protein immunoblot analysis...

The luxA,B genes from the Gram-negative marine bacterium Vibrio harveyi MAV were used in Staphylococcus carnosus TM300 as a reporter system for regulated expression of xylose utilization. The luciferase genes were fused to the xyl operon from Staphylococcus xylosus C2a. Expression of bioluminescence was induced through addition of xylose and repressed in the presence of glucose. A method to qua...

A cluster of five genes, proposed to be involved in the formation of extracellular polysaccharide (EPS) precursors via the Leloir pathway, have been identified in the acidophilic autotroph Acidithiobacillus ferrooxidans. The order of the genes is luxA-galE-galK-pgm-galM, encoding a LuxA-like protein, UDP-glucose 4-epimerase, galactokinase, phosphoglucomutase, and galactose mutarotase, respectiv...