introduccion a la biologia celular y molecularcronos.unq.edu.ar/ibcm/clases/2008a/organelas.pdf ·...
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- BIOLOGIA CELULAR -Compartimentalización celular eucariota
INTRODUCCION A LA BIOLOGIA CELULAR Y MOLECULAR
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Componentes de membrana
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La membrana plasmática
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Eucariotas vs. Procariotas
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Membrana plasmática eucariota
Esfingosina Ceramida=Esfingosina+Ac. graso Esfingomielina=Esfingosina+Ac. graso Glicolípido=ceramida+azucar
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Arreglo de la membrana plasmática
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Membrana plasmática eucariota
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Fosfolípidos y Gangliósidos
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Composición de la membrana plasmática
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Membrana plasmática
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Membrana plasmática procariota
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Lipido de membrana de bacteria Archae. Están unidas por uniones de tipo “ethers” (-O-) y no poruniones “esteres” (-COO-). Las cadenas de ácido graso son terpenoides (polyisoprenos). No son Acidos grasos reales sin grupos grandes en sus extremos.
Lipidos de basterias Archae
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Membrana plasmática eucariotas
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Caracteristicas de la celula eucariota
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Caracteristicas de la celula eucariota
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Compartimentos celulares
% del total *
1Endosomas1Lisosomas1Peroxisomas6Nucleo6RE liso mas Golgi9RE rugoso
22Mitocondrias57Citosol
* hepatocito
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Poros nucleares
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Núcleo - Transporte de mRNA
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Núcleo - Transporte de proteínas
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Retículo Endoplasmático
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Retículo Endoplasmático Rugoso
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Secuencias señal del RE
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SRP (Partícula de Reconocimiento de la Señal)
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Traslocación de péptidos al lumen del RE
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Traslocación de péptidos al lumen del RE
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Traslocación de péptidos trasmembrana
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Retículo Endoplasmático Liso
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Síntesis de Fosfolípidos
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Degradación de péptidos
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Aparato de Golgi
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Aparato de Golgi
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Aparato de Golgi
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Aparato de Golgi
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Aparato de Golgi
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Aparato de Golgi
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Aparato de Golgi
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Aparato de Golgi
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Mitocondias - Función
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Mitocondrías – Transporte de péptidos
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Mitocondrias – Transporte de péptidos
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Mitocondrías – Transporte de péptidos
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Mitocondrías – Transporte de péptidos
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Cloroplastos - Función
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Cloroplastos – Transporte de péptidos
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Transporte vesicular
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Transporte vesicular
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Transporte vesicular - SNARE
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Transporte vesicular - COPI
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Transporte vesicular - COPII
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Vesículas recubiertas
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Transporte vesicular
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