Basal body

In cells that are destined to have only one primary cilium, the mother centriole differentiates into the basal body upon entry into G1 or quiescence.

[5] In multiciliated cells, however, in many cases basal bodies are not made from centrioles but are generated de novo from a special protein structure called the deuterosome.

On cell cycle entry, cilia resorb and the basal body migrates to the nucleus where it functions to organize centrosomes.

Centrioles, basal bodies, and cilia are important for mitosis, polarity, cell division, protein trafficking, signaling, motility and sensation.

[15] Regulation of basal body production and spatial orientation is a function of the nucleotide-binding domain of γ-tubulin.

Schematic of the eukaryotic flagellum. 1-axoneme, 2-cell membrane, 3-IFT ( Intraflagellar transport ), 4-Basal body, 5-Cross section of flagellum, 6-Triplets of microtubules of basal body.
Longitudinal section through the flagella area in Chlamydomonas reinhardtii . In the cell apex is the basal body that is the anchoring site for a flagellum. Basal bodies originate from and have a substructure similar to that of centrioles, with nine peripheral microtubule triplets (see structure at bottom center of image).