Ribonucleoprotein-like Structures from Coronavirus Particles
نویسندگان
چکیده
منابع مشابه
Ribonucleoprotein-like structures from coronavirus particles.
The structure of the ribonucleoprotein (RNP) complex of three coronaviruses was investigated. A single-stranded helix of diam. 14 to 16 nm and up to 320 nm in length was released from disrupted particles of human coronavirus strain 229E and mouse hepatitis virus strain 3 after incubation in mild conditions. The helical complexes appeared to be composed of globular subunits with long axes of 5 t...
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The structure of rat liver vault ribonucleoprotein particles was examined using several different staining techniques in conjunction with EM and digestion with hydrolytic enzymes. Quantitative scanning transmission EM demonstrates that each vault particle has a total mass of 12.9 +/- 1 MD and contains two centers of mass, suggesting that each vault particle is a dimer. Freeze-etch reveals that ...
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Sypherd, Paul S. (University of California, San Diego). Formation of ribosomes from precursor ribonucleoprotein particles. J. Bacteriol. 90:411-417. 1965.-Amino acid deprivation of a "relaxed" mutant leads to the accumulation of ribonucleoprotein particles. The possibility that these particles are equivalent to normal ribosome precursors was investigated. This was accomplished by determining th...
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Messenger ribonucleoprotein particles were isolated from the polysomes of logarithmically growing plant cell cultures, pulse-labeled with [3H] adenosine for 30 min. More than 80% of the labeled RNP was present in particles sedimenting between 80 S and 30 S on sucrose density gradients, but was not associated with ribosomal subunits. The size distribution differs from those reported for polysoma...
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The LINE-1 retrotransposon (L1) encodes two proteins, ORF1p and ORF2p, which bind to the L1 RNA in cis, forming a ribonucleoprotein (RNP) complex that is critical for retrotransposition. Interactions with both permissive and repressive host factors pervade every step of the L1 life cycle. Until recently, limitations in detection and production precluded in-depth characterization of L1 RNPs. Ind...
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ژورنال
عنوان ژورنال: Journal of General Virology
سال: 1978
ISSN: 0022-1317,1465-2099
DOI: 10.1099/0022-1317-39-3-545