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Evolución de las proteínas. Sobre la ascendencia de los barriles
1NIH, Bethesda, MD 20892-0830, USA. edithm@intra.niddk.nih.gov
Science (New York, N.Y.)
|September 19, 2000
Resumen
La evolución de las proteínas puede implicar la duplicación y fusión de genes, incluso en los pliegues de proteínas de un solo dominio comunes como los barriles beta / alfa. Este estudio sugiere que mecanismos similares pueden explicar el origen de otras proteínas de un solo dominio.
Área de la Ciencia:
- La evolución de las proteínas.
- Biología estructural Biología estructural.
- La bioinformática es la bioinformática.
Sus antecedentes:
- La mayoría de las proteínas son multi-dominio, que surgen de la duplicación de genes y la fusión.
- Las proteínas del barril beta/alfa son una clase común de pliegues de proteína de un solo dominio.
Objetivo del estudio:
- Investigar si los mecanismos de duplicación y fusión de genes contribuyen a la evolución de proteínas de un solo dominio, específicamente b/a barriles.
- Para explorar los orígenes evolutivos de los pliegues de proteínas comunes de un solo dominio.
Principales métodos:
- Análisis de las estructuras y secuencias de proteínas.
- Estudios evolutivos comparados. estudios evolutivos comparados.
Principales resultados:
- La evidencia sugiere que la duplicación genética y la fusión también pueden impulsar la evolución de las proteínas del barril.
- Este mecanismo puede explicar el origen de otras familias de proteínas de un solo dominio.
Conclusiones:
- Las vías evolutivas para la diversificación de proteínas son más variadas de lo que se pensaba anteriormente.
- Las proteínas de un solo dominio, incluidos los barriles b/a, pueden surgir de mecanismos similares a los de las proteínas de múltiples dominios.
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