polyribosome


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polyribosome

 [pol″e-ri´bo-sōm]
a cluster of ribosomes connected with messenger RNA; they play a role in peptide synthesis.

polyribosome

/poly·ri·bo·some/ (-ri´bo-sōm) a cluster of ribosomes connected with messenger RNA; they play a role in peptide synthesis.
Enlarge picture
Schematic diagram of polyribosomes synthesizing nascent polypeptide chains from a messenger RNA (mRNA) template, the direction proceeding 5′ to 3′.

polyribosome

(pŏl′ē-rī′bə-sōm′)
n.
A cluster of ribosomes that is connected by a strand of messenger RNA and is active in protein synthesis. Also called polysome.

polyribosome

See polysome.

polyribosome

A cluster or string of ribosomes held together by a molecule of messenger RNA.

polyribosome

or polysome two or more RIBOSOMES joined by a molecule of messenger RNA during PROTEIN SYNTHESIS. Such an arrangement ensures that the mRNA is ‘read’ at the maximum speed.

polyribosome

a cluster of ribosomes connected with messenger RNA; they are formed for the translation of mRNA to proteins. See also ribosome.
References in periodicals archive ?
Most studies to date indicate that RNAi occurs in the cytoplasm by acting on translating polyribosomes.
Additional features of the tumor cells included moderately abundant mitochondria, stacks of rough endoplasmic reticulum, and polyribosomes.
Mercury compounds can bind to the RNA of tobacco mosaic viruses (Katz & Santilli, 1962), several synthetic polyribosomes, and yeast soluble RNA (Kawade, 1963).
The cytoplasm contained many mitochondria, prominent Golgi apparatus, numerous polyribosomes, moderate endoplasmic reticulum, a few lipid droplets, and, focally, intermediate filaments.
The exact percentage of glassy cells needed to make the diagnosis of GCC is not well established, but it may range from 30% to 100%[1,9] Ultrastructurally, glassy cells may show intermediate filaments, polyribosomes, tonofibrils, and desmosomes.
Electron microscopy revealed cells with prominent nucleoli and abundant cytoplasmic polyribosomes (Figure 4).