centrosome

(redirected from Centrosomes)
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to Centrosomes: endoplasmic reticulum, Peroxisomes, Plastids

centrosome

 [sen´tro-sōm]
a specialized area of condensed cytoplasm containing the centrioles and playing an important part in mitosis.

cy·to·cen·trum

(sī'tō-sen'trŭm),
A zone of cytoplasm containing one or two centrioles but devoid of other organelles; usually located near the nucleus of a cell.
[cyto- + G. kentron, center]

centrosome

/cen·tro·some/ (sen´tro-sōm) a specialized area of condensed cytoplasm containing the centrioles and playing an important part in mitosis.

centrosome

(sĕn′trə-sōm′)
n.
A small region of cytoplasm adjacent to the nucleus that contains the centrioles and serves to organize microtubules.

cen′tro·so′mic (-sō′mĭk) adj.

centrosome

Etymology: Gk, kentron + soma, body
a self-propagating cytoplasmic organelle present in animal cells and in those of some lower plants. The structure, which consists of the centrosphere and the centrioles, is located near the nucleus of the cell center or attraction sphere and functions as the dynamic center of the cell, especially during mitosis. Also called cytocentrum, microcentrum, paranuclear body.

centrosome

(1) Uncertain; possibly the microtubule organising centre (MTOC). 
(2) The smallest hypothetical unit of life, the cytocentrum.

cy·to·cen·trum

(sī'tō-sen'trŭm)
A zone of cytoplasm containing one or two centrioles but devoid of other organelles; usually located near the nucleus of a cell.
Synonym(s): centrosome, microcentrum.
[cyto- + G. kentron, center]

centrosome

A small mass of CYTOPLASM, lying near the nucleus of a cell and consisting of a pair of centrioles, which divides into two parts before cell division. These migrate to the poles of the cell and the spindle develops between them.

centrosome

an area of cell CYTOPLASM found near the nucleus, whose function is thought to be the organization of nuclear division since it is capable of assembling and disassembling MICROTUBULES. When nuclear division starts, the centrosome divides into two organizing centres which migrate to each pole (along with the CENTRIOLES, if present) and the spindle develops between them.

centrosome

a specialized area of condensed cytoplasm containing the centrioles and playing an important part in mitosis.
References in periodicals archive ?
There may be another function for centrosomes that is still obscured," he added.
1994), and humans (Sathananthan, 1997) do not contain centrioles in meiotic centrosomes and do not display astral microtubule arrays.
2007) reported that the mitogen-activated protein kinase kinase (MEK)/MAPK pathway regulates microtubule and centrosome assembly.
In plants, the absence of centrosomes is ubiquitous, except where they appear in spermatogenesis of plants such as the bryophytes that produce motile sperm (Shimamura et al.
73) It can be colocalized with PC-1 on the primary cilium or in the centrosome but can also function singly or by interacting with other potential partners in the ER.
Attempts have been made to unravel the molecular structure of sperm and somatic centrosomes (7,10).
Katanin is a microtubule severing ATPase, known to localize at the centrosome in animal cells.
The helix-loop-helix protein ID1 localizes to centrosomes and rapidly induces abnormal centrosome numbers.
The scientists also detected presenilins in kinetochores, which are specialized protein complexes on chromosomes, and in centrosomes, structures found just outside the nuclear 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.
Most current theories of spindle assembly focus on the interplay between the centromeres, which are specific DNA sequences on chromosomes, and the centrosomes, sites of microtubule construction outside the nucleus.
Doing so, Brodsky and her colleagues showed that clathrin stabilizes the structures in dividing cells known as centrosomes.