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Definition: 'Polyribosomes'

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polyribosomes

Type: Term

Pronunciation: pol′ē-rī′bō-sōmz

Definitions:
1. 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.

Synonyms: polysomes



The information shown above for polyribosomes is provided by Stedman's.

* Stedman's, part of Lippincott Williams & Wilkins, provide a comprehensive line of health-science publications for healthcare professionals and medical students.

Medical Dictionary Copyright © 2006 Lippincott Williams & Wilkins. All rights reserved.








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