Results 251 to 260 of about 30,834 (284)

CHARACTERIZATION OF BRAIN RIBONUCLEOPROTEIN PARTICLES

Journal of Neurochemistry, 1979
Abstract— Brain RNP particles were characterized to determine whether they play a role in the regulation of brain protein synthesis. RNP particles were isolated from the postribosomal supernatant of cerebral hemispheres of young rabbits, employing conditions which minimize adventitious protein‐RNA interactions.
James B. Mahony, Ian R. Brown
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Antigenic relatedness of small ribonucleoprotein particles

Biochimica et Biophysica Acta (BBA) - General Subjects, 1984
We have examined the relationships among small ribonucleoprotein particles found in eucaryotic cells by an antigen depletion technique using autoimmune antibodies. We have confirmed that the (U1) ribonucleoprotein particle antigen is found on the same complex as the Sm antigen.
John A. Boyle, Gerald G. Williamson
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Ribonucleoprotein particles from Escherichia coli

Journal of Molecular Biology, 1959
In exponential cultures, 25% of the dry weight of E. coli is accounted for by RNA. Of this about 80 to 90% is present in ribonucleoprotein particles and 10 to 20% in the “soluble” or “non-sedimentable” fraction. Magnesium stabilizes the particles, and on varying its concentration, four kinds of components are observed, with sedimentation constants of
B.R. Hollingworth, James D. Watson, A. Tissières, D. Schlessinger   +3 more
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Axonal transport of ribonucleoprotein particles (Vaults)

Neuroscience, 1999
RNA was previously shown to be transported into both dendritic and axonal compartments of nerve cells, presumably involving a ribonucleoprotein particle. In order to reveal potential mechanisms of transport we investigated the axonal transport of the major vault protein of the electric ray Torpedo marmorata.
Annica Dahlström, Christine Herrmann, B. Das, Walter Volknandt, Herbert Zimmermann, Jia-Yi Li, Juan Blasi   +6 more
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A model for nucleocytoplasmic transport of ribonucleoprotein particles

Journal of Theoretical Biology, 1982
Abstract Some aspects of the transport of ribonucleoprotein particles from nucleus to cytoplasm have been derived from in vitro assays employing isolated nuclei. The transport process has an apparent activation energy of 13 kcal/mol, shows an Arrhenius relationship without evidence of a transition between 35 and 0 °C, requires hydrolysis of one ...
Edward A. Smuckler, Gary A. Clawson
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Messenger ribonucleoprotein particles in silkmoth oogenesis

Developmental Biology, 1976
Silkmoth oocytes contain significant amounts of nontranslating cytoplasmic messenger RNA apparently stored until fertilization. The physical state of this mRNA was examined by bouyant density centrifugation on cesium chloride gradients. Messenger elements were isolated either by oligo(dT) cellulose chromatography or by separation of ooplasm on sucrose ...
Spencer J. Berry, Larry M. Paglia, William H. Kastern   +2 more
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D-RNA Containing Ribonucleoprotein Particles

1971
This paper will deal with ribonucleoprotein particles containing D-RNA or RNA with a DNAlike base composition. This RNA is characterized by a high AU-content, heterogeneity with respect to molecular weight, a relatively rapid turnover, and the ability to stimulate amino acid incorporation in a cell-free system.
G. P. Georgiev, O. P. Samarina
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Architecture of ribonucleoprotein complexes in influenza A virus particles [PDF]

Nature, 2006
In viruses, as in eukaryotes, elaborate mechanisms have evolved to protect the genome and to ensure its timely replication and reliable transmission to progeny. Influenza A viruses are enveloped, spherical or filamentous structures, ranging from 80 to 120 nm in diameter.
Albert Yen, Yoshihiro Kawaoka, Hiroshi Sagara, Ayato Takada, Ayato Takada, Takeshi Noda, Hiroshi Kida, R. Holland Cheng, R. Holland Cheng   +8 more
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Informational ribonucleoprotein particles of newt oocytes: Polyribosome-associated ribonucleoproteins

Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1974
Various species of rapidly labelled, informational ribonucleoproteins can be isolated from homogenates of newt oocytes. Polyribosome-associated ribonucleoprotein can be separated from heterogeneous nuclear ribonucleoprotein and free cytoplasmic ribonucleoprotein by sucrose gradient centrifugation.
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Nuclear ribonucleoprotein particles associated with DNA

Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1969
Abstract 1. 1. Nuclear ribonucleoprotein particles, prepared from isolated calf thymus nuclei, under the conditions adopted in these experiments, contained 4.0±0.26% DNA. 2. 2. Sucrose density gradient electrophoresis analyses of the DNA present in the ribonucleoprotein preparations showed that DNA was present largely on ribonucleoprotein ...
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