These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Functional chloroplast polyribosomes from tobacco leaves.
    Author: Chen JL, Wildman SG.
    Journal: Science; 1967 Mar 10; 155(3767):1271-3. PubMed ID: 6018650.
    Abstract:
    Incubation of isolated to bacco chloroplasts with ingredients re quired for protein synthesis resulted in liberation of 70S ribosomnes and poly ribosomes that no longer sedimented with the chloroplasts. With increasing time of incubation, polyribosomes broke down to 70S monosomes. Similarly, microgram quantities of ribonuclease caused chloroplast polyribosomes to break down into monosomes. Both polyribosomes and 70S ribosomes that were isolated on sucrose density gra dients and tested separately in cell-free systems were capable of protein syn thesis; however, polyribosomes formed more protein per unit of RNA than monosomes did.
    [Abstract] [Full Text] [Related] [New Search]