DNA Structure and Replication

ID #2066

What do the histone tails do and/or why are they important?

They get chemically modified by the cell in a reversible fashion to signal the cell that something needs to be done to the chromatin they are part of. Could be more extensive winding, could be unwinding, etc., but each combination of chemical "labels" they have on them says something different about that region of chromatin.

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