Mycosporine-like amino acids (MAAs): chemical structure, biosynthesis and significance as UV-absorbing/screening compounds.
Indian J Exp Biol
;
2008 Jan; 46(1): 7-17
Artigo
em Inglês
| IMSEAR
| ID: sea-55606
ABSTRACT
Continuous depletion of the stratospheric ozone layer has resulted in an increase in ultraviolet-B (UV-B; 280-315 nm) radiation on the earth's surface which inhibits photochemical and photobiological processes. However, certain photosynthetic organisms have evolved mechanisms to counteract the toxicity of ultraviolet or high photosynthetically active radiation by synthesizing the UV-absorbing/screening compounds, such as mycosporine-like amino acids (MAAs) and scytonemin besides the repair of UV-induced damage of DNA and accumulation of carotenoids and detoxifying enzymes or radical quenchers and antioxidants. Chemical structure of various MAAs, their possible biochemical routes of synthesis and role as photoprotective compounds in various organisms are discussed.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Oxigênio
/
Fotossíntese
/
Fitoplâncton
/
Raios Ultravioleta
/
DNA
/
Estrutura Molecular
/
Cianobactérias
/
Biomassa
/
Cicloexanóis
/
Eucariotos
Tipo de estudo:
Estudo diagnóstico
/
Estudo de rastreamento
Idioma:
Inglês
Revista:
Indian J Exp Biol
Ano de publicação:
2008
Tipo de documento:
Artigo
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