Opsin-Mediated Inhibition of Bacterioruberin Synthesis in Halophilic Archaea [PDF]
Journal of Bacteriology, 2017 ABSTRACTHalophilic archaea often inhabit environments with limited oxygen, and many produce ion-pumping rhodopsin complexes that allow them to maintain electrochemical gradients when aerobic respiration is inhibited. Rhodopsins require a protein, an opsin, and an organic cofactor, retinal.
Ronald F, Peck +4 more
openaire +3 more sources
Antioxidative and chaperone-like activities of a bacterioruberin-rich extract: An innovative approach to protect the skin proteome. [PDF]
Int J Cosmet SciAbstract Objective Oxidative stress and its induced protein alterations are instrumental in the early onset and progression of ageing. To protect the skin proteome, we evaluated the extract of a bacterium isolated from snowflakes ( Arthrobacter ...
Tisserand JC +7 more
europepmc +4 more sources
Identification of carotenoids from the extremely halophilic archaeon Haloarcula japonica
Frontiers in Microbiology, 2014 The carotenoids produced by extremely halophilic archaeon Haloarcula japonica were extracted and identified by their chemical, chromatographic, and spectroscopic characteristics (UV-Vis and mass spectrometry).
Rie eYatsunami +12 more
doaj +2 more sources
Carbon Source Influences Antioxidant, Antiglycemic, and Antilipidemic Activities of Haloferax mediterranei Carotenoid Extracts [PDF]
Marine Drugs, 2022 Haloarchaeal carotenoids have attracted attention lately due to their potential antioxidant activity. This work studies the effect of different concentrations of carbon sources on cell growth and carotenoid production.
Micaela Giani +3 more
doaj +2 more sources
Antioxidant Capacity of Carotenoid Extracts from the Haloarchaeon Halorhabdus utahensis [PDF]
Antioxidants, 2023 Herein, we report on the production, characterization, and antioxidant power assessment of carotenoids from the haloarchaeon Halorhabdus utahensis. It was grown at 37 °C and 180 rpm agitation in halobacteria medium supplemented with glucose, fructose ...
Ismene Serino +6 more
doaj +2 more sources
A New Era for Using Natural Pigments: The Case of the C<sub>50</sub> Carotenoid Called Bacterioruberin. [PDF]
Biotechnol Appl BiochemABSTRACT Haloarchaea are extremophilic microorganisms belonging to the Archaea domain that require high salt concentrations to live, thus inhabiting ecosystems like salty ponds, salty marshes, or extremely salty lagoons. They are more abundant and widely distributed worldwide than initially expected.
Giani M +5 more
europepmc +4 more sources
Complex Effects of Cytochrome P450 Monooxygenase on Purple Membrane and Bacterioruberin Production in an Extremely Halophilic Archaeon: Genetic, Phenotypic, and Transcriptomic Analyses [PDF]
Frontiers in Microbiology, 2018 Halophilic archaea are known to produce a diverse array of pigments for phototrophy and photoprotection. The aim of this paper was to determine the role of a Halobacterium gene encoding the predicted cytochrome P450 monooxygenase (CYP174A1) in pigment ...
Walter J. Müller +4 more
doaj +2 more sources
Deciphering Pathways for Carotenogenesis in Haloarchaea [PDF]
Molecules, 2020 Bacterioruberin and its derivatives have been described as the major carotenoids produced by haloarchaea (halophilic microbes belonging to the Archaea domain).
Micaela Giani +4 more
doaj +2 more sources
Up-Regulation of the Nrf2/HO-1 Antioxidant Pathway in Macrophages by an Extract from a New Halophilic Archaea Isolated in Odiel Saltworks [PDF]
Antioxidants, 2023 The production of reactive oxygen species (ROS) plays an important role in the progression of many inflammatory diseases. The search for antioxidants with the ability for scavenging free radicals from the body cells that reduce oxidative damage is ...
Javier Ávila-Román +6 more
doaj +2 more sources
The Journal of Physical Chemistry B, 2017 Ultrafast photochemistry of pharaonis halorhodopsin (p-HR) in the intact membrane of Natronomonas pharaonis has been studied by photoselective femtosecond pump-hyperspectral probe spectroscopy with high time resolution. Two variants of this sample were studied, one with wild-type retinal prosthetic groups and another after shifting the retinal ...
Itay Gdor +4 more
openaire +3 more sources