Results 31 to 40 of about 95,040 (171)

Mycosporine-Like Amino Acids: Relevant Secondary Metabolites. Chemical and Ecological Aspects

open access: yesMarine Drugs, 2011
Taxonomically diverse marine, freshwater and terrestrial organisms have evolved the capacity to synthesize, accumulate and metabolize a variety of UV-absorbing substances called mycosporine-like amino acids (MAAs) as part of an overall strategy to ...
Mario O. Carignan, Jose I. Carreto
doaj   +3 more sources

Efficient Isolation of Mycosporine-Like Amino Acids from Marine Red Algae by Fast Centrifugal Partition Chromatography [PDF]

open access: yesMarine Drugs, 2022
Marine rhodophyta are known to synthesize specific secondary metabolites, mycosporine-like amino acids (MAAs), to protect themselves from harmful UV-radiation. Shinorine and porphyra-334 are among the most abundant representatives of this compound class.
Michael Zwerger   +2 more
doaj   +2 more sources

Characterization of Antioxidant Activity of Heated Mycosporine-like Amino Acids from Red Alga Dulse Palmaria palmata in Japan [PDF]

open access: yesMarine Drugs, 2022
We recently demonstrated the monthly variation and antioxidant activity of mycosporine-like amino acids (MAAs) from red alga dulse in Japan. The antioxidant activity of MAAs in acidic conditions was low compared to that in neutral and alkali conditions ...
Yuki Nishida   +4 more
doaj   +2 more sources

Sunscreen Effect Exerted by Secondary Carotenoids and Mycosporine-like Amino Acids in the Aeroterrestrial Chlorophyte Coelastrella rubescens under High Light and UV-A Irradiation [PDF]

open access: yesPlants, 2021
The microalga Coelastrella rubescens dwells in habitats with excessive solar irradiation; consequently, it must accumulate diverse compounds to protect itself. We characterized the array of photoprotective compounds in C. rubescens.
Anna Zaytseva   +6 more
doaj   +2 more sources

Bostrychines A–F, Six Novel Mycosporine-Like Amino-Acids and a Novel Betaine from the Red Alga Bostrychia scorpioides [PDF]

open access: yesMarine Drugs, 2019
Various red algae have repeatedly been reported to produce a variety of UV-absorbing mycosporine-like amino acids (MAAs), compounds that are well-known as natural sun-screens, as well as a plethora of betaines, metabolites which contribute to the osmotic
Maria Orfanoudaki   +5 more
doaj   +2 more sources

Mycosporine-Like Amino Acids (MAAs) in Time-Series of Lichen Specimens from Natural History Collections [PDF]

open access: yesMolecules, 2019
Mycosporine-like amino acids (MAAs) were quantified in fresh and preserved material of the chlorolichen Dermatocarpon luridum var. luridum (Verrucariaceae/Ascomycota). The analyzed samples represented a time-series of over 150 years. An HPLC coupled with
Marylène Chollet-Krugler   +4 more
doaj   +2 more sources

Application of Synthetic Biology Approaches to High-Yield Production of Mycosporine-like Amino Acids

open access: yesFermentation, 2023
Ultraviolet (UV) radiation reaching the Earth’s surface is a major societal concern, and therefore, there is a significant consumer demand for cosmetics formulated to mitigate the harmful effects of UV radiation.
Varsha K. Singh   +9 more
doaj   +2 more sources

Anti-Inflammation Activities of Mycosporine-Like Amino Acids (MAAs) in Response to UV Radiation Suggest Potential Anti-Skin Aging Activity

open access: yesMarine Drugs, 2014
Certain photosynthetic marine organisms have evolved mechanisms to counteract UV-radiation by synthesizing UV-absorbing compounds, such as mycosporine-like amino acids (MAAs).
Sung-Suk Suh   +7 more
doaj   +3 more sources

Osmotic signaling governs sunscreen biosynthesis to safeguard desert cyanobacteria against desiccation

open access: yesmLife
Mycosporine‐like amino acids (MAAs) are natural sunscreens synthesized by a wide range of organisms. Although the induction of MAA production by ultraviolet radiation is well established, the signaling pathways involved and specific functions of MAAs ...
Lei Zhao   +7 more
doaj   +2 more sources

How much do mycosporine-like amino acids contribute to UV-B resistance in cyanobacteria? A CRISPR/Cpf1-mediated gene cluster knockout study

open access: yesThe Microbe
Mycosporine-like amino acids (MAAs) function as ultraviolet sunscreens, antioxidants, compatible solutes, and nitrogen reservoirs in diverse organisms.
Xiang Gao   +6 more
doaj   +2 more sources

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