Results 1 to 10 of about 1,349,627 (320)

The size and the location of the ribosomal RNA segments in ribosomal precursor RNA of yeast

Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1971
Abstract The order of the different segments of the 42-S ribosomal precursor RNA of yeast was investigated. For that purpose first the lengths of the rRNA stretches were measured. These were inferred from the relative amounts of oligonucleotides present in complete pancreatic ribonuclease digests of the two large rRNA components, and in this way were
J. Retèl, R.C. van den Bos, Rudi J. Planta   +2 more
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On the evolution of ribosomal RNA

Journal of Molecular Evolution, 1987
Despite the availability of a rapidly growing ribosomal RNA database that now includes organisms in all three primary lines of descent (eubacteria, archaebacteria, and eukaryotes), theoretical treatment of the evolution of the ribosomal RNAs has lagged behind that of the protein genes.
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Evolution of ribosomal RNA

Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1977
1. The G + C content of ribosomal RNA of animals seems correlated with the length of periods required for maturation of those organisms. 2. In Protostomes of the animal kingdom, the size of the 28S rRNA molecule does not seem to correlate with the evolutionary stage of the organism. 3.
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Regulation of ribosomal RNA synthesis

Advances in Enzyme Regulation, 1969
Abstract Levorphanol, a synthetic morphine, is known as a potent inhibitor for bacterial ribosomal RNA. Spermidine has an antagonistic effect on this inhibition. The authors applied Levorphanol on the RNA synthesis in liver cells. Levorphanol specifically inhibits the nucleolar ribosomal RNA synthesis.
Yoshiaki Miura, Shigeru Sakiyama, Sadahito Usui   +2 more
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Ribosomal RNA Metabolism in Macrophages

1992
Macrophages are ubiquitous cells critical for host defense (Wiltrout and Varesio 1987; Varesio 1985b). Metchnikoff’s original report in the late nineteenth century first suggested that phagocytes are the body’s prime detectors of foreign invaders; the functions of macrophages have since been delineated, initially at a cellular level and more recently ...
G. L. Gusella, L. Varesio, Barbara Bottazzi, Danuta Radzioch   +3 more
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Structure and function of ribosomal RNA

Biochemistry and Cell Biology, 1995
A refined model has been developed for the folding of 16S rRNA in the 30S subunit, based on additional constraints obtained from new experimental approaches. One set of constraints comes from hydroxyl radical footprinting of each of the individual 30S ribosomal proteins, using free Fe2+–EDTA complex.
Harry F. Noller, Rachel Green, Gabriele Heilek, Vernita Hoffarth, Alexander Hüttenhofer, Simpson Joseph, Inho Lee, Kate Lieberman, Alexander Mankin, Chuck Merryman, Ted Powers, Elisabetta Viani Puglisi, Raymond R. Samaha, Bryn Weiser   +13 more
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Secondary Structure of Ribosomal RNA

Science, 1970
Infrared spectra were obtained for 16 S and for 23 S ribosomal RNA's in D 2 O solutions. The percentage of each base in the paired and unpaired regions of the RNA was determined from the spectra. The secondary structures of 16 S and 23
K. A. Hartman, G. J. Thomas
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Ribosomal RNA: the message or matrix for ribosomal proteins

Canadian Journal of Biochemistry, 1976
The known nucleotide sequence of Escherichia coli 16S ribosomal RNA has been converted to amino acid sequences in all possible ways, and compared to known ribosomal protein sequences. The degree of similarity is precisely what one would expect by chance alone, providing additional evidence that ribosomal proteins cannot be coded for by ribosomal RNA.
A. T. Matheson, L. P. Visentin, D. R. Miller   +2 more
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Ribosomal RNA precursors in plants

Journal of Molecular Biology, 1970
Abstract A high molecular weight, rapidly-labelled ribosomal RNA precursor in the pearoot tip and in artichoke-tuber tissue is described. It has a molecular weight, determined by polyacrylamide-gel electrophoresis, of about 2.3 × 10 6 daltons. The pea precursor RNA consists of two components which can just be distinguished by gel electrophoresis ...
M.E. Rogers, Ulrich E. Loening, R.S.S. Fraser   +2 more
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Incorporating activity of ribosomes and integrity of ribosomal RNA

Biochemical and Biophysical Research Communications, 1970
Abstract The interrelationship between the amino acid incorporating ability and the state of ribosomal-RNA in ribonuclease treated rat liver ribosomes was studied. It was shown that ribosomes containing no or only negligible amounts of 28 S ribosomal-RNA retained at least 30 per cent of their original incorporating activity /measured without addition
L. Vereczkey, P. Hüvös, O. Gaál
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