polyribosomes


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pol·y·ri·bo·somes

(pol'ē-rī'bō-sōmz),
Conceptually, two or more ribosomes connected by a molecule of messenger RNA; structures satisfying this concept can be seen in electron micrographs and can be sedimented at rates consistent with aggregates of ribosomes (whence it is often, sometimes incorrectly, assumed that aggregates containing ribosomes are true polyribosomes); polyribosomes are active in protein synthesis.
Synonym(s): polysomes

pol·y·ri·bo·somes

(pol'ē-rī'bō-sōmz)
Two or more ribosomes connected by a molecule of messenger RNA.
Synonym(s): polysomes.
References in periodicals archive ?
Sassone-Corsi, "Orphan receptor DAX-1 is a shuttling RNA binding protein associated with polyribosomes via mRNA," Molecular and Cellular Biology, vol.
Common findings were dilated stacks of rough endoplasmic reticulum, polyribosomes, randomly distributed intermediate filaments, and rare collagen secretion granules (Fig 5).
Also, the other cellular alterations such as decreased protein content, increased ribonuclease activity, protein hydrolysis, hydrogen peroxide concentration and dissociation of polyribosomes are also known to occur in plants exposed to water stress [15,22].
The cytoplasm of endotheliocyte is also differed by extreme enlightenment; there are few polyribosomes in it.
Similar to some data, the current investigation showed that C[Cl.sub.4] toxicity resulted in reduction of liver total protein content in C[Cl.sub.4]-treated rats suggesting the disruption and disassociation of polyribosomes from endoplasmic reticulum following C[Cl.sub.4] administration (Clawson, 1989).
Separation of the messenger RNA of reticulocyte polyribosomes. Biochem Biophys Res Commun 1964; 16: 522-527.
Metabotropic glutamate receptor-initiated translocation of protein kinase p90rsk to polyribosomes: a possible factor regulating synaptic protein synthesis.
Most studies to date indicate that RNAi occurs in the cytoplasm by acting on translating polyribosomes. However, recent studies have shown that in the yeast Schizosaccharomyces pombe, silencing of centromeric repeats is mediated by dsRNA and Dicer/RISC (Volpe et al.
These differences can be related to the differences of neuronal density between the segments of each study, and also to the fact that not all myenteric neurons are myosin V positive while polyribosomes of all neurons are stained by Giemsa technique.
Contents of DNA, polyribosomes, ribosomal RNA, protein and Chlorophyll.
FMRP associates with polyribosomes as an mRNP, and the 1304N mutation of severe fragile X syndrome abolishes this association.