Why do cells contain chromatin?

What cells contain chromatin?

Chromatin is a complex of DNA and proteins that forms chromosomes within the nucleus of eukaryotic cells.

What is chromatin responsible for?

Chromatin structure plays an important role in gene expression and is responsible for the storage of genetic information within the nucleus (Hauser and Jung, 2008).

Why chromatin is found only in eukaryotes?

Chromatin is only found in eukaryotic cells, with prokaryotic cells having a different arrangement of their genetic material called a genophore – a chromosome that doesn’t contain chromatin.

Why is condensing of chromatin necessary?

Condensation of chromatin into sturdy chromosomes is also necessary to establish proper physical properties. Chromosomes must be stiff, resilient, and elastic enough to withstand forces coming from pulling microtubules and cytoplasmic drags during mitosis to prevent damage and breaks caused by external tensions.

How is chromatin fibers formed?

Chromatin fibers are formed by heterogeneous groups of nucleosomes in vivo. Cell. 2015 Mar 12;160(6):1145-58.

How are chromosomes formed from chromatin?

The cellular DNA is replicated during interphase, resulting in the formation of two copies of each chromosome prior to the beginning of mitosis. As the cell enters mitosis, chromatin condensation leads to the formation of metaphase chromosomes consisting of two identical sister chromatids.

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How a cell can regulate its chromatin structure?

In eukaryotic cells, gene expressions on chromosome DNA are orchestrated by a dynamic chromosome structure state that is largely controlled by chromatin-regulating proteins, which regulate chromatin structures, release DNA from the nucleosome, and activate or suppress gene expression by modifying nucleosome histones or …

What is the role of chromatin in transmission of genetic material?

Chromatin organization is crucial for genome replication, transcriptional silencing, and DNA repair and recombination. The replication machinery is relevant for the maintenance of chromatin states, influencing DNA replication origin specification and accessibility.