Chromatin Remodeling Complexes

Chromatin remodeling complexes are molecular machines within cells that modify the structure of chromatin, which is DNA wrapped around proteins called histones. This remodeling helps control gene expression by making certain genes more or less accessible for reading. When chromatin is tightly packed, genes are often off, while looser structures allow for active gene expression. These complexes play a crucial role in processes like development, response to environmental signals, and repair of damaged DNA, ensuring that the right genes are activated at the right times. Together, they help maintain proper cellular function and identity.