Histone tails can be modified by acetylation (loosens chromatin, increasing transcription) and methylation (tightens chromatin, reducing transcription).
Acétylation (neutralise la charge -> détend -> augmente la transcription), méthylation (maintient la charge positive -> enroulé -> réduit la transcription).
| Front | steps of transcription: elongation |
|---|---|
| Back | RNA polymerase moving along coding sequence, synthesizing RNA in 5' to 3' direction |
Tags: 7_2_transcription_gene_expression
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