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El citoesqueleto bacteriano
Gero Fink1, Andrzej Szewczak-Harris1, Jan Löwe1
1MRC Laboratory of Molecular Biology, Cambridge CB2 0QH, UK.
Cell
|July 16, 2016
Resumen
La mayoría de las bacterias y arqueas poseen estructuras de proteínas filamentosas, llamadas colectivamente el citoesqueleto bacteriano. Estas estructuras no son universalmente citoesqueléticas, ni siempre influyen en la forma celular o la organización interna.
Área de la Ciencia:
- Microbiología
- Biología celular
- La bioquímica
Sus antecedentes:
- Las bacterias y las arqueas utilizan diversos sistemas de proteínas filamentosas.
- Estos sistemas a menudo se denominan colectivamente como el citoesqueleto bacteriano.
- Sin embargo, no todos estos sistemas funcionan como verdaderos citoesqueletos.
Objetivo del estudio:
- Aclarar la definición y el alcance del citoesqueleto bacteriano.
- Investigar las diversas funciones de las proteínas filamentosas en los procariotas.
- Distinguir entre los sistemas de filamentos citosqueléticos y no citosqueléticos.
Principales métodos:
- Análisis comparativo de las proteínas filamentosas procariotas.
- Revisión de la literatura sobre la estructura celular bacteriana y arqueal.
- Caracterización funcional de los sistemas de filamento seleccionados.
Principales resultados:
- Los sistemas de proteínas filamentosas están muy extendidos en bacterias y arqueas.
- Estos sistemas exhiben funciones variadas, incluida la determinación de la forma celular y la organización intracelular.
- Un subconjunto de estos sistemas se alinea con la definición funcional de un citoesqueleto.
Conclusiones:
- El término "citoesqueleto bacteriano" abarca una amplia gama de estructuras filamentosas.
- Existe una diversidad funcional y estructural dentro de estos sistemas.
- Se necesita una definición precisa para diferenciar los verdaderos elementos citoesqueléticos de otros sistemas de filamentos.
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