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
Artículo
en Inglés
| 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:
Disponible
Índice:
IMSEAR (Asia Sudoriental)
Asunto principal:
Oxígeno
/
Fotosíntesis
/
Fitoplancton
/
Rayos Ultravioleta
/
ADN
/
Estructura Molecular
/
Cianobacterias
/
Biomasa
/
Ciclohexanoles
/
Eucariontes
Tipo de estudio:
Estudio diagnóstico
/
Estudio de tamizaje
Idioma:
Inglés
Revista:
Indian J Exp Biol
Año:
2008
Tipo del documento:
Artículo
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