Results 31 to 40 of about 14,327 (227)

Genomic and experimental data provide new insights into luciferin biosynthesis and bioluminescence evolution in fireflies

open access: yesScientific Reports, 2020
Fireflies are among the most charismatic insects for their spectacular bioluminescence, but the origin and evolution of bioluminescence remain elusive.
Ru Zhang   +23 more
doaj   +1 more source

Using bioluminescence to image gene expression and spontaneous behavior in freely moving mice.

open access: yesPLoS ONE, 2023
Bioluminescence imaging (BLI) of gene expression in live animals is a powerful method for monitoring development, tumor growth, infections, healing, and other progressive, long-term biological processes. BLI remains an effective approach for reducing the
Astha Malik   +2 more
doaj   +1 more source

Introducing a new reporter gene, membrane-anchored Cypridina luciferase, for multiplex bioluminescence imaging

open access: yesMolecular Therapy: Oncolytics, 2021
Bioluminescence reporter gene imaging is a robust, high-throughput imaging modality that is useful for tracking cells and monitoring biological processes, both in cell culture and in small animals.
Maxim A. Moroz   +10 more
doaj   +1 more source

Redox-triggerable firefly luciferin-bioinspired hydrogels as injectable and cell-encapsulating matrices [PDF]

open access: yes, 2022
Stimuli-responsive hydrogels are smart materials that respond to variations caused by external stimuli and that are currently exploited for biomedical applications such as biosensing, drug delivery and tissue engineering.
Jin, Minye   +5 more
core   +1 more source

Optogenetic inhibition of neurons by internal light production

open access: yesFrontiers in Behavioral Neuroscience, 2014
Optogenetics is an extremely powerful tool for selective neuronal activation/inhibition and dissection of neural circuits. However, a limitation of in vivo optogenetics is that an animal must be tethered to an optical fiber for delivery of light.
Benjamin eLand   +4 more
doaj   +1 more source

A photocytes-associated fatty acid-binding protein from the light organ of adult Taiwanese firefly, Luciola cerata. [PDF]

open access: yesPLoS ONE, 2011
BACKGROUND: Intracellular fatty acid-binding proteins (FABPs) are considered to be an important energy source supplier in lipid metabolism; however, they have never been reported in any bioluminescent tissue before.
King-Siang Goh, Chia-Wei Li
doaj   +1 more source

Influence of Bioluminescence Imaging Dynamics by D-Luciferin Uptake and Efflux Mechanisms

open access: yesMolecular Imaging, 2012
Bioluminescence imaging (BLI) detects light generated by luciferase-mediated oxidation of substrate and is used widely for evaluating transgene expression in cell-based assays and in vivo in relevant preclinical models.
Yimao Zhang   +3 more
doaj   +1 more source

Decrease of catalytic efficiency of Photinus pyralis firefly luciferase in the presence of graphene quantum dots [PDF]

open access: yesNanomedicine Journal, 2020
Objective(s): Firefly luciferase is a monooxygenase enzyme that emits flash of light during the enzymatic reaction. Luciferase has been used in many bioanalytical fields from ATP detection methods to in vivo imaging.
Elaheh Samadi   +3 more
doaj   +1 more source

Fluorescent Properties of Firefly Luciferases and Their Complexes with Luciferin

open access: yesBioscience Reports, 2000
Fluorescence of luciferases from Luciola mingrelica (single tryptophanresidue, Trp-419) and Photinus pyralis (two tryptophan residues, Trp-417,Trp-426) was studied. Analysis of quenching of tryptophan fluorescenceshowed that the tryptophan residue conserved in all luciferases is notaccessible for charged quenchers, which is explained by the presence ...
E I, Dementieva   +4 more
openaire   +2 more sources

Regulatory effects of ATP and luciferin on firefly luciferase activity [PDF]

open access: yesBiochemical Journal, 1995
ATP and luciferin are not only substrates of firefly luciferase, but can, in addition, modulate its activity. High concentrations of luciferin induce a conformational change of the enzyme that temporarily reduces the catalytic rate. Re-activation takes approx.
N, Lembert, L A, Idahl
openaire   +2 more sources

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