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[Small RNAs in Bombyx mori nuclear polyhedrosis virus polyhedra form complexes with polypeptide p14 and polyhedrin]

T V Shirina, M T Bobrovskaia, É A Kozlov

    Ukrains'Kyi Biokhimichnyi Zhurnal (1999 )
    |August 3, 2011
    PubMed

    Insights

    Two small RNAs within NPV B. mori polyhedra form specific ribonucleoprotein (RNP) complexes with polypeptides p29 and p14. These complexes further interact with polyhedrin, forming larger structures, with the origin of the polypeptides discussed.

    Area of Science:

    • Molecular Biology
    • Virology
    • Biochemistry

    Background:

    • Nuclear Polyhedrosis Virus (NPV) B. mori polyhedra contain small RNAs and polypeptides.
    • The structural organization and interactions within these polyhedra are not fully elucidated.

    Purpose of the Study:

    • To investigate the formation of ribonucleoprotein (RNP) complexes between small RNAs and specific polypeptides within NPV B. mori polyhedra.
    • To determine the molecular weights and interactions of these RNP complexes with polyhedrin.

    Main Methods:

    • Isolation and characterization of small RNAs (approximately 65 and 55 nucleotides) from NPV B. mori polyhedra.
    • Identification and analysis of polypeptides p29 and p14.
    • Co-immunoprecipitation and gel electrophoresis to study RNP complex formation and molecular weights.

    Main Results:

    • Two small RNAs formed specific RNP complexes with polypeptides p29 (50 kDa) and p14 (31 kDa).
    • Both identified RNP complexes further associated with polyhedrin, creating high-molecular weight structures.
    • The origin and nature of polypeptides p29 and p14 were discussed in the context of viral structure.

    Conclusions:

    • Small RNAs and specific polypeptides (p29, p14) are key components in forming RNP complexes within NPV B. mori polyhedra.
    • These RNP complexes play a role in the assembly of high-molecular weight structures with polyhedrin.
    • Further research is needed to fully understand the functional significance of these interactions.

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