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Cytoskeleton

Fractal Fractal posted on Apr 25, 2012
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Description


Cytoskeleton The cytoskeleton (also CSK) is a cellular "scaffolding" or "skeleton" contained within a cell's cytoplasm and is made out of protein. The cytoskeleton is present in all cells; it was once thought to be unique to eukaryotes, but recent research has identified the prokaryotic cytoskeleton. It has structures such as flagella, cilia and lamellipodia and plays important roles in both intracellular transport (the movement of vesicles and organelles, for example) and cellular division. In 1903 Nikolai K Koltsov proposed that the shape of cells was determined by a network of tubules which he termed the cytoskeleton. The concept of a protein mosaic that dynamically coordinated cytoplasmic biochemistry was proposed by Rudolph Peters in 1929 while the term (cytosquelette, in French) was first introduced by French embryologist Paul Wintrebert in 1931. _________________________ Le cytosquelette Le cytosquelette (à réserver au cytoplasme, mais cf. cytomotosquelette) d'une cellule est l'ensemble organisé des polymères biologiques qui lui confèrent l'essentiel de ses propriétés mécaniques. La référence terminologique au « squelette » des vertébrés est cependant trompeuse puisque -toutes les composantes du cytosquelette sont renouvelées par polymérisation en permanence -le cytosquelette est à l'origine de la plupart des forces exercées par la cellule pour se déplacer et se nourrir, ce en quoi il s'apparente plutôt à un ensemble de "muscles". enfin, les propriétés mécaniques du cytosquelette sont très variables suivant les composantes et les situations considérées. Les cytosquelettes de tous les eucaryotes sont assez similaires (bien que des différences importantes existent entre les cellules animales et végétales), tandis que ceux récemment découverts chez les procaryotes semblent organisés de façon tout à fait différente. Thanks Merci MAGIK

Comments (47)


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mariogiannecchini

12:06PM | Thu, 26 April 2012

Gorgeous colors and lighting!very beautiful fractal !

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Flint_Hawk Online Now!

2:05PM | Thu, 26 April 2012

This is lovely!

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carlx

3:02PM | Thu, 26 April 2012

Wonderful colors and composition, MU!!!

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drifterlee

3:35PM | Thu, 26 April 2012

Really pretty, Magik!

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adrie

3:57PM | Thu, 26 April 2012

Another outstanding fractal design my friend, again superb work love it.

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Marinette

4:01PM | Thu, 26 April 2012

Cool design! :)

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MarciaGomes

5:12PM | Thu, 26 April 2012

IMPRESSIONANTE FRACTAL MEU AMIGO,FASCINANTES CORES OS DETALHES SÃO FANTÁSTICOS.++++++++5 OBRIGADO PELA INFORMAÇÃO.

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clbsmiley

5:45PM | Thu, 26 April 2012

Brilliant!! And great info!!

atlas7

11:18PM | Thu, 26 April 2012

Joli travail, les couleurs sont sublimes !

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rayag

3:35AM | Fri, 27 April 2012

Very nice and very creative.

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Rhanagaz

6:09AM | Fri, 27 April 2012

Excellent artistic interpretation of the cellular skeleton and a fine info too!!! :o)

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flavia49

7:23AM | Fri, 27 April 2012

astonishing work

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dochtersions

8:16AM | Fri, 27 April 2012

AAH, such superb colors and design, Magik!

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Glendaw

1:21PM | Fri, 27 April 2012

What a beautiful rendition of those unique cells. Outstanding formations and sense of movement. Thanks for sharing the added information Magik.

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LBJ2

3:11PM | Fri, 27 April 2012

Funny and beautiful fractal composition, MU. Some piece of history, too. Great work.

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RodS

7:49PM | Fri, 27 April 2012

Super fractal, Real! Fascinating information, too!

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danapommet

7:42PM | Sun, 13 May 2012

Amazing colors my friend and a fantastic zoom

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