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PMID: 16657753 Published · ppublish English Journal Article

A Role for Zinc in the Structural Integrity of the Cytoplasmic Ribosomes of Euglena gacilis.

Plant physiology ·Vol. 48 ·No. 2 ·1971-08-00 ·Pages 150-5

Prask JA, Plocke DJ

Abstract

Zinc deficiency in dark-grown Euglena gracilis Klebs, Z strain Pringsheim, results in the disappearance of cytoplasmic ribosomes. In contrast, ribosomes in zinc-sufficient Euglena are conserved, do not undergo turnover, and can be demonstrated at any stage of growth. The zinc content of ribosomes from zinc-deficient Euglena just prior to ribosomal disappearance is 300 to 380 micrograms of zinc per gram rRNA as compared to 650 to 1280 micrograms of zinc per gram rRNA in ribosomes from zinc-sufficient cells. Ribosomal disappearance is believed to involve a generalized disintegration process related to the lower content of zinc in the ribosomes. Reappearance of ribosomes requires the addition of zinc. It is proposed that adequate zinc may be essential for normal tertiary and quaternary structure of the cytoplasmic ribosomes of Euglena.

Authors & Affiliations
2 authors, click to expand affiliations / ORCID
Prask J A
Department of Biology, Boston College, Chestnut Hill, Massachusetts 02167.
Plocke D J
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Article Info
Journal
Plant physiology
Abbr.
Plant Physiol
ISSN
0032-0889
DOI
10.1104/pp.48.2.150
Published
1971-08-00
Pages
150-5
Language
English
Region
United States
NLM ID
0401224
PMCID
PMC396821
External Links
PubMed source DOI: 10.1104/pp.48.2.150 PMC Full Text View journal details
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