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A cluster of ribosomes that is connected by a strand of messenger RNA and is active in protein synthesis. Also called polysome.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Biochemistry) biochem an assemblage of ribosomes associated with a messenger RNA molecule, involved in peptide synthesis. Also called: polysome
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈpɒl iˌsoʊm)

a complex of ribosomes that lines up along a strand of messenger RNA and translates the genetic code during protein synthesis.
[1960–65; poly- + (ribo) some]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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Indeed, HuR stabilises SIRT1 transcripts and promotes their polyribosome engagement for active translation [37].
ATP is one of the important components in forming polyribosome and protein synthesis and its derivatives.
Moreover, out of a given pool of mRNA, only a fraction is recruited further into the polyribosome assembly for translation [7].
amount of Golgi apparatus, rough endoplasmic reticulum, mitochondria, and polyribosome. The cells, which are long and thin, are widely dispersed and the adjacent extracellular matrix is populated by a few reticular fibrils but is devoid of the other types of collagen fibrils
Peripheral blood mononuclear cells stimulated with C5a or lipopolysaccharide to synthesize equivalent levels of IL-1[beta] mRNA show unequal IL-1[beta] protein accumulation but similar polyribosome profile.
Polyribosome dissociation and formation in intact reticulocytes with conservation of messenger ribonuclear acid.
Recently, Wernerman et al.(14) found that OGO supplementation in post-surgery parenteral nutrition improved the nitrogen balance, had a partial preventive effect on free-glutamine depletion in muscle tissue, and maintained polyribosome aggregation.
A greater density of submucosal neurons was verified by Giemsa technique that can be considered a pan-neuronal technique because it stains neurons due to the affinity of the stain with structures formed by acid proteins, especially polyribosomes. Based on the staining of enteric neurons by Giemsa technique (Barbosa), they classify neurons according to the cytoplasm basophilia and state that this technique allows to visualize polyribosome disintegration (Nissl' corpuscles) in the neuronal chromatolysis processes (Sant'Ana et al., 1997).
Peptide labeling and separation of polyribosome size classes in embryos
Export proteins are synthesized on polyribosomes bound to the rough endoplasmic reticulum of the hepatocyte; in contrast, protein destined for intracellular use are synthesized on free rather than bound polyribosome (Podolsky and Isselbacher, 1991).
Effect of cadmium on polyribosome structure and function in mouse liver.
There is an increase in ribosomes, polyribosomes and cell organelles in cortical parenchyma (as inXiphinema galls) (Weischer & Wyss, 1976; Wyss, 1997, 2002) or in xylem parenchyma cells (as in Meloidogyne galls) (Bird, 1961; Yousif, 1979; Finley, 1981; Wyss, 1997, 2002; Di Vito et al., 2004) due to the nematodes feeding activity (Wyss, 1997).