HLH (helix-loop-helix) Homeodomain (HLH) Winged helix (HLH) Wing (extra contacts) ETS domain...

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Transcript of HLH (helix-loop-helix) Homeodomain (HLH) Winged helix (HLH) Wing (extra contacts) ETS domain...

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HLH (helix-loop-helix)

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Homeodomain (HLH)

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Winged helix (HLH)

Wing (extra contacts)

ETS domain protein

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bZIP y bHLH

Creb

Jun-fos

Myc

Mad

MyoD

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Arrays de cDNA YEAST CHIP

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Un arreglo GeneChip usa conjuntos de pares de sondas de oligos de 16-20 (un par: apareamiento perfecto e imperfecto) por cada gen para detectar los transcriptos. Un arreglo de alta densidad contiene pares de sondas para al menos 7.000 genes. Se muestra una imagen de los resultados de hibridización

Array de

oligonucleotidos

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Variación de la expresión de genes durante el crecimiento en levadura

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Molecular Biology of the Cell

Vol. 9, 3273–3297, December 1998

Genes cuya expresión varía durante el ciclo celular

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Cromatinización del DNA

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CBP estimula la transactivación mediada por Myc

El efecto depende de actividad HAT y la interacción es por el C-terminus de Myc

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“Enhanceosome” del promotor del Interferon

Promotor TNF-

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Molecular Cell, Vol. 7, 1213, 2001

Cdk1 Triggers Association of RNA Polymerase to

Cell Cycle Promoters Only after Recruitment

of the Mediator by SBF

M. P. Cosma, S. Panizza, and K. Nasmyth

Research Institute of Molecular Pathology

Vienna, Austria

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A URS1 se pega el FT Mbf (SWI5-SWI6)

A URS2 se pega el FT SBF (SWI4-SWI6)

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SWI5 FT

SWI2 (Swi/Snf) remodel. ATP

ADA2 SAGA) acetil histonas

SWI4 FT

Northern blot

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Destino de la célula hija

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                              The mediator coactivator complex: functional andphysical roles in transcriptional regulationBrian A. Lewis and Danny Reinberg

Journal of Cell Science 116, 3667-3675 © 2003

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