Meaning of Centriole

What is Centriole:

The centriole is central body of centrosomes in animal cells. In plant cells, the centrosomes do not have centrioles.

Centrosomes, both in animal and plant cells, are the organization center for microtubules, a structure that is part of centrioles, chromosomes, flagella, cilia, and the cytoskeleton of cells.

Centrioles are located near the cell nuclei and are linked to the cell membrane by being made of microtubules, one of the structures that maintain the support of the cytoskeleton.

Centrioles are made up of microtubule triplets that will duplicate and grow to form mature centrosomes, if the cell plans mitosis.

Each centrosome has 2 centrioles and at the moment in which the DNA and its genetic material in the form of a chromosome are duplicated, the centrioles that will form the 2 future centrosomes that will help in the formation of the mitotic spindle, essential for cell division or cell division, are also duplicated. mitosis.

Therefore, each cell has a centrosome with 2 centrioles. At the time of DNA duplication, the centrosomes and their centrioles are also duplicated.

centriole function

The centriole is composed of triplets of microtubules made of the protein tubulin and linked by supporting proteins. Before prophase in mitosis, centrioles can attach and grow to separate into centrosomes for preparation of the mitotic spindle needed for cell division.

See also Mitosis.

In addition, the centrioles in the centrosome are surrounded by a pericentriolar mass, a substance that provides anchoring sites for microtubules.

Since centrioles are part of the cytoskeleton structure, a small modification of the triplets also serves as a basal body to hold flagella and cilia in eukaryotic cells. This assembly is in turn useful for controlling the entry and exit of substances.

You may be interested:  Meaning of Affinity