El selenio, un elemento poco conocido con un rol biológico importante

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Selenium is an essential micronutrient present in various organisms including human beings. This element may be found in different organic and inorganic metabolites, and selenocysteine (Sec) is the most important. The insertion of Sec in selenoproteins uses a unique mechanism that involves the recod...

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Detalles Bibliográficos
Autor: Cañari Chumpitaz, Cristhian
Formato: artículo
Fecha de Publicación:2011
Institución:Pontificia Universidad Católica del Perú
Repositorio:PUCP-Institucional
Lenguaje:español
OAI Identifier:oai:repositorio.pucp.edu.pe:20.500.14657/100427
Enlace del recurso:http://revistas.pucp.edu.pe/index.php/quimica/article/view/4780/4782
Nivel de acceso:acceso abierto
Materia:Química
https://purl.org/pe-repo/ocde/ford#1.04.00
Descripción
Sumario:Selenium is an essential micronutrient present in various organisms including human beings. This element may be found in different organic and inorganic metabolites, and selenocysteine (Sec) is the most important. The insertion of Sec in selenoproteins uses a unique mechanism that involves the recoding of the UGA codon. This process requires new RNA fragments like the selenocysteine insertion sequence (SECIS) in the mRNA. The function of many selenoproteins is not known completely; however, some of them are involved in intracellular redox signaling regulation, redoxhomeostasis and thyroid hormone metabolism. Se deficiency in humans affects human health and results in diseases such as cancer, Keshan disease and hormonal disfunctions.
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