Tubulin

Tubulin is the protein which makes up microtubules. Microtubules are assembled from dimers of α- and β-tubulin. Each of these subunits has three domains. γ-tubulin is important in the nucleation and polar orientation of microtubule.
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Tubulin:
Abundant cytoplasmic protein (55 kD), found mainly in two forms, a and b. A tubulin heterodimer (one a, one b), constitutes the protomer for microtubule assembly.
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tubulins The protein subunits from which microtubules are assembled.
tumor suppressor genes Genes that normally keep cell division under control, preventing the cell from responding to internal and external commands to divide.
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tubulin Globular protein forming the hollow cylinder of microtubules.
tumor necrosis factor. A cytokine, the most important source of which is macrophages, that is a major mediator of inflammation.
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tubulin - protein which when polymerized forms microtubules, necessary for (among other processes) karyokinesis.
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vegetal hemisphere - the lower, yolky portion of the egg; opposite the animal hemisphere.
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The set of tubulin fibers that appear to move eukaryotic chromosomes during division. The microtubule apparatus that controls chromosome movement during mitosis and meiosis.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
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A hollow rod of tubulin protein in the cytoplasm of all eukaryotic cells and in cilia, flagella, and the cytoskeleton.
microvillus pl. microvilli ...
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microtubules Thin tubules assembled from two types of globular tubulin subunits (a and ). Found in cilia, flagella, centrosomes, and other contractile or motile structures.
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In most NFT-bearing neurons, we observed a strong reduction in acetylated a-tubulin immunoreactivity (a marker of stable microtubules) and a reduction of the in situ hybridization signal for tubulin mRNA.
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During polymerization, both the α- and β- subunits of the tubulin dimer are bound to a molecule of GTP. The GTP bound to α-tubulin is stable, but the GTP bound to β-tubulin may be hydrolized to GDP shortly after assembly.
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They are made of a protein called tubulin. Tubulin dimers are arranged to form a long hollow cylinder.
The fibers are lengthened and shortened as tubulin dimers assemble or disassemble from one or both ends of the filament.
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grow at each end by the polymerization of tubulin dimers (powered by the hydrolysis of GTP), and
shrink at each end by the release of tubulin dimers (depolymerization) ...
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microtubules -- Type of filament in eukaryotic cells composed of units of the protein tubulin. Among other functions, it is the primary structural component of the eukaryotic flagellum.
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In particular, he has devised a system that can discriminate among myotubulin-specific regulatory regions, other regulatory regions, and nonregulatory regions.
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