Chromatin remodeling is a process that alters the structure of chromatin, the material made of DNA and proteins that forms chromosomes. This remodeling allows access to specific genes, making them available for transcription and regulation. It plays a crucial role in gene expression, DNA repair, and replication. The remodeling is facilitated by various protein complexes that move, eject, or restructure nucleosomes, the basic units of chromatin. These changes can be influenced by factors such as cell signaling and environmental conditions, ensuring that the right genes are activated or silenced at the appropriate times.