centriole


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centriole

 [sen´tre-ōl]
either of the two cylindrical organelles located in the centrosome and containing nine triplets of microtubules arrayed around their edges; centrioles migrate to opposite poles of the cell during cell division and serve to organize the spindles. They are capable of independent replication and of migrating to form basal bodies.
ring centriole a common misnomer for the anulus of the spermatozoon, which is not actually a centriole.

cen·tri·ole

(sen'trē-ōl),
Tubular structures, 150 nm by 300-500 nm, with a wall having nine triple microtubules, usually seen as paired organelles lying in the cytocentrum; centrioles may be multiple and numerous in some cells, such as the giant cells of bone marrow.
[G. kentron, a point, center]

centriole

(sĕn′trē-ōl′)
n.
One of two cylindrical cellular structures that are composed of nine triplet microtubules and form the asters during mitosis.

cen·tri·ole

(sen'trē-ōl)
Tubular structures usually seen as paired organelles lying in the cytocentrum; centrioles may be multiple and numerous in some cells, such as the giant cells of bone marrow.
[G. kentron, a point, center]

centriole

A short, hollow, cylindrical ORGANELLE consisting of nine sets of microtubules and usually occurring in pairs set at right angles to each other. Centrioles are responsible for the production of the spindle apparatus that appears just before the separation of the chromosomes into two sets prior to cell division.

centriole

One of the two rod-like bodies in cells forming the poles of the spindles during cell division.
Centrioleclick for a larger image
Fig. 97 Centriole . Structure and orientation.

centriole

one of a pair of small ORGANELLES lying at right angles to each other in an area known as the CENTROSOME, just outside the nucleus of lower plants and all animals (see Fig. 97 ). Centrioles are self-replicating, dividing into two during the ‘S’ phase of the INTERPHASE of the CELL CYCLE and then separating into two pairs, one pair migrating to each pole of the future mitotic spindle, from which an ASTER forms. The role of centrioles in nuclear division is unclear, since they are absent from most plant cells and laser-beam irradiation of centrioles has no effect on division.
References in periodicals archive ?
IIF patterns and diagnosis IIF Pattern n % Diagnosis n Cancer (esophageal, gastric, colon) 22 SAID 12 Midbody 49 0.49 Polyneuropathy 3 Infectious disease 3 Postmenopausal osteoporosis 1 Other pathologies 8 Autoimmune hepatitis/Primary Anti-actin 37 0.37 biliary cirrhosis/Chronic liver disease 36 Celiac disease 1 SAID 14 Centriole 29 0.29 Cerebrovascular disease 8 Other pathologies 7 SAID 2 Anti-golgi 21 0.21 Chronic liver disease 9 Infectious disease 4 Other pathologies 6 Infectious disease 5 Cancer 3 Spindle fibers 20 0.20 Vasculitis 2 Diabetes mellitus type 2 2 Autoimmune hepatitis 1 Other pathologies 7 Infectious disease 2 PCNA-like 9 0.09 Polyneuropathy 2 SAID 1 Other pathologies 4 Rods and rings 3 0.03 Chronic hepatitis C 3 SAID: Systemic autoimmune diseases.
(6) The centriolar region in the initial stage of spermatid differentiation showing the nucleus (N), the centriolar adjunct material (ca), and the centriole (c).
[gamma]-Tubulin in land plants has been released from a tight association with centrioles that is typical of animal and algal cells.
Centrin is a Conserved Protein that Forms Diverse Associations with Centrioles and MTOCs in Naegleria and Other Organisms [Review].
The sperm centriole is located in its neck within a 'black box', flanked by the segmental columns, just beneath the basal plate, proximal to its nucleus.
Briefly, the process of PC assembly begins with the formation of the basal body, the mother centriole from which the cilium nucleates, and its migration and docking to the actin-rich cortex located at the cell surface.
7 chromosome centriole probe exhibits green fluorescence due to fluorescein isothiocyanate labeling, and the EGFR probe exhibits red fluorescence due to rhodamine labeling.
Griffiths, "Centriole polarisation to the immunological synapse directs secretion from cytolytic cells of both the innate and adaptive immune systems," BMC Biology, vol.
Scale bar: 500 nm; 11, microgamont (MIC) with peripherally arranged nuclei (N), without nucleoli, note the presence of mitochondrion (MI) and centriole (C) in the vicinity of the nuclei.
Growth of renal cilia is templated from a basal body/ centriole structure anchored just beneath the plasma membrane.
(1,2) Highly organized organelles, the mammalian centrosomes consists of a pair of centriole and pericentriolar matrix that surrounds the individual centriole and the microtubules.