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Wednesday, May 6, 2020 | History

2 edition of Electron microscopic studies of RNA and protein synthesis in isolated mitochondria found in the catalog.

Electron microscopic studies of RNA and protein synthesis in isolated mitochondria

Patricia Jean Cliffel

Electron microscopic studies of RNA and protein synthesis in isolated mitochondria

by Patricia Jean Cliffel

  • 261 Want to read
  • 38 Currently reading

Published by Boston College in [Chestnut Hill, Ma.] .
Written in English

    Subjects:
  • Mitochondria.,
  • RNA -- Synthesis.

  • Edition Notes

    Statementby Patricia Jean Cliffel.
    The Physical Object
    Paginationvi, 62 leaves :
    Number of Pages62
    ID Numbers
    Open LibraryOL16302718M

    Nov 8, - Explore proteinstream's board "Protein Synthesis" on Pinterest. See more ideas about Protein synthesis, Synthesis, Molecular biology pins. Recent studies of x-ray damage to frog blood cells at the electron microscope level of resolution are presented. The studies indicate that a dose of rads results in the disruption of the ultra-structure of red cell mitochondria and in the appearance of vacuoles in the cytoplasm of leukocytes.

    Mitochondria are the sites of aerobic respiration. They produce cellular energy in the form of ATP, hence they are called ‘power houses’ of the cell. The matrix also possesses single circular DNA molecule, a few RNA molecules, ribosomes (70S) and the components required for the synthesis of proteins. The mitochondria divide by fission.   Ogata, T. & Yamasaki, Y. Scanning electron-microscopic studies on the three-dimensional structure of mitochondria in the mammalian red, white and intermediate muscle fibers. Cell .

      Since the mids, insights obtained from electron microscopy and X-ray crystallography have transformed our understanding of how the most important ribozyme in the cell, the ribosome, catalyzes protein synthesis. This review provides a brief account of how this structural revolution came to pass, and the impact it has had on our understanding of how the ribosome Cited by: RNA Synthesis Most of the work of making RNA takes place during transcription. In transcription, segments of DNA serve as templates to produce complementary RNA mol-ecules. In prokaryotes, RNA synthesis and protein synthesis takes place in the cytoplasm. In eukaryotes, RNA is produced in the cell’s nucleus and then moves to the cytoplasm to File Size: KB.


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Electron microscopic studies of RNA and protein synthesis in isolated mitochondria by Patricia Jean Cliffel Download PDF EPUB FB2

Electron microscopic examination revealed that only the lower gradient band contained contamination-free mitochondria, which, in turn, lacked ability to oxidize linoleic : Renate Horn.

Electron microscopic radioautographic study on protein synthesis in amitotic hepatocytes of the aging mouse Article in Medical Electron Microscopy 37(1) April with 9 Reads. 1. Introduction. It has been known for over 50 years that isolated rat liver mitochondria can incorporate radiolabelled amino acids into nascent gh these first reports were challenged by researchers claiming that this incorporation was due to bacterial contamination of isolated mitochondrial preparations, by the late s it had become well accepted that mammalian Cited by: Vol number 1 FEBS LETTERS September INDUCTION OF PROTEIN SYNTHESIS IN MITOCHONDRIA BY EXOGENOUS RNA.

SYNTHESIS OF RABBIT GLOBIN BY ISOLATED MITOCHONDRIA OF TETRAHY MENA PYRIFORMIS. DIMITRIADIS and J. GEORGATSOS Laboratory of Biochemistry, University of Patras, Patras, Greece.

Received 2 July by:   The mitochondrial protein synthesis machinery was first identified by John R. McLean in in rat liver (McLean et al. ) and then isolated from the same organ by Thomas W. O’Brien in (O'Brien and Kalf ).Although mammalian mitoribosomes, like other ribosomes, are composed of a large (mt-LSU) and a small (mt-SSU) subunit, they differ markedly in their density, sedimenting as Cited by: Accelerated RNA and Protein Synthesis in Mitochondria Isolated From Unperfused Myocardium.

Possible Involvement of Cyclic AMP. Journal of Molecular and Cellular Cardiology () 10, Mitochondria were isolated under aseptic conditions from the ventricles of excised rat hearts that were kept totally ischemic (unperfused) at Cited by: 4.

Mitochondria isolated from the rat liver and the monkey cardiac muscle by differential centrifugation were three-dimensionally viewed under a field emission scanning electron microscope (SEM). Liver mitochondria were mostly spherical in form, whereas mitochondria of the cardiac muscle were oval or by: 3.

Proteins are assembled from amino acids using information encoded in protein has its own unique amino acid sequence that is specified by the nucleotide sequence of the gene encoding this protein. The genetic code is a set of three-nucleotide sets called codons and each three-nucleotide combination designates an amino acid, for example AUG (adenine-uracil-guanine) is the code for.

Patricia Jean Cliffel has written: 'Electron microscopic studies of RNA and protein synthesis in isolated mitochondria' -- subject(s): RNA, Mitochondria, Synthesis Asked in Medication and Drugs.

Conventional transmission electron microscopic examination of murine embryonic fibroblasts treated with carbonyl cyanide m-chlorophenylhydrazone (CCCP), a mitochondrial uncoupler, found that more than half of the mitochondria presented a ring-shaped or C-shaped morphology.

Many of these mitochondria seemed to have engulfed various cytosolic. We report here a novel mitochondrial structure. Conventional transmission electron microscopic examination of murine embryonic fibroblasts treated with carbonyl cyanide m-chlorophenylhydrazone (CCCP), a mitochondrial uncoupler, found that more than half of the mitochondria presented a ring-shaped or C-shaped by: The ATP5F1A protein weighs kDa and is composed of amino acids.

The protein is a subunit of the catalytic portion of the F 1 F o ATPase, also known as Complex V, which consists of 14 nuclear and 2 mitochondrial -encoded subunits. As an alpha subunit, ATP5F1A is contained within the catalytic F 1 portion of the s: ATP5F1A, ATP5A, ATP5AL2, ATPM, HEL-S.

An electron microscope image of two mitochondria, with the characteristic folds and creases of this organelle Think of these mitochondrial proteins as the wheels and gears inside a machine. - is the RNA component of the ribosome, and is essential for protein synthesis in all living organisms.

- Ribosomal RNA constitutes the predominant material within the ribosome, which is approximately 60% rRNA and 40% protein by weight. The homeostasis of mitochondria protein is controlled through protein degradation, de novo protein synthesis, and refolding of misfolded proteins back to their original 3-D structure The repair of damaged mitochondrial DNA (mtDNA), which encodes essential subsets of proteins, the two RNA subunits of the mitochondrial ribosome and tRNAs needed.

The amino acids form peptide bonds with the end of the polypeptide strand and the ribosome continues upstream. In the Ribosome, the mRNA, tRNA, and Amino Acids meet to form a Protein.

The Ribosome is the main organizing center for Protein Synthesis. Electron Microscopic Studies on Vital Stain as Compared with Phagocytosis. A Concept of Segresomes Micro-Centrifugal Processing of Isolated Mitochondria for Electron Microscopy Localization of RNA, Protein and Lipid in Rous Sarcoma Virus by Electron MicrocytochemistryBook Edition: 1.

Protein–protein crosslinking [], protein–RNA crosslinking [, ], protection and modification studies [], neutron scattering [, ], electron microscopy [], and ribosome crystallization [] figure prominently among the methods involved in this continuing endeavor. Similarly, pGFP, a chimeric protein not able to bind RNAs cannot promote RNA uptake (Supplementary Figure S3b) even though the protein can be imported into isolated mitochondria (Supplementary Figure S1b).

An additional control experiment was the addition of a folate analogue, methotrexate, prior to the RNA import by: Electron microscopic study of cardiomyocytes taken from healthy Wistar and OXYS rats and naked mole rats (Heterocephalus glaber) revealed mitochondria in nuclei that lacked part of the nuclear envelope.

The direct interaction of mitochondria with nucleoplasm is shown. More detailed electron microscopic comparisons between cyanobacteria and chloroplasts (for example studies by Hans Ris), combined with the discovery that plastids and mitochondria contain their own DNA (which by that stage was recognized to be the hereditary material of organisms) led to a resurrection of the idea in the s.Electron microscopic radioautography of thin sections: The Golgi zone as a site of protein concentration in pancreatic acinar cells.

Journal of Cell Biology, 10, 37–45 Caro, Cited by: Anderson S, De Bruijn MHL, Coulson AR, Eperon IC, Sanger F & Young IG () J. Mol. Biol. – PubMed Google ScholarCited by: