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Microdissection of Black Widow Spider Silk-producing Glands

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Published on: January 11, 2011

La telaraña del Cretácico Temprano con su presa.

Enrique Peñalver¹, David A Grimaldi, Xavier Delclòs

¹Department of Entomology, American Museum of Natural History, New York, NY 10024, USA.

Science (New York, N.Y.)

|June 24, 2006

Resumen

La telaraña esférica, una araña.

Área de la Ciencia:

Biología evolutiva Biología evolutiva.
Ciencia de los biomateriales ciencia de los biomateriales.

Sus antecedentes:

La telaraña es una estructura compleja de seda de araña.
Su origen evolutivo es objeto de debate.

Objetivo del estudio:

Investigar la historia evolutiva de la red de orbes.
Determinar si la red de orbes evolucionó una o varias veces.

Principales métodos:

Analizó las bibliotecas de expresión de las glándulas de seda.
Examinó la distribución y la filogenia de las proteínas de seda.

Principales resultados:

La evidencia apoya un único origen de la red de orbes.
La red de orbes se originó hace al menos 136 millones de años.

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Amplió la base de datos de secuencias de seda para la síntesis de biomateriales.

Conclusiones:

La red de orbes tiene un único y antiguo origen evolutivo.
El análisis de la proteína de seda aclara la evolución de la red de órbitas.
Las nuevas secuencias de seda ofrecen potencial para biomateriales avanzados.