Identification of nucleocapsid protein residues required for Sendai virus nucleocapsid formation and genome replication.
نویسندگان
چکیده
منابع مشابه
Identification of nucleocapsid protein residues required for Sendai virus nucleocapsid formation and genome replication.
Alanine substitution mutations in the Sendai virus nucleocapsid (NP) protein have defined highly conserved hydrophobic and charged residues from amino acids (aa) 362 to 371 that are essential for function of the protein in RNA replication. Mutant NP362, which had the change F362A, was incapable of supporting in vitro RNA replication. NP362 expressed alone formed extended oligomers which exhibit...
متن کاملThe conserved N-terminal region of Sendai virus nucleocapsid protein NP is required for nucleocapsid assembly.
Sendai virus nucleocapsid protein NP synthesized in the absence of other viral components assembled into nucleocapsid-like particles. They were identical in density and morphology to authentic nucleocapsids but were smaller in size. The reduction in size was probably due to the fact that they contained RNA only 0.5 to 2 kb in length. Nucleocapsid assembly requires NP-NP and NP-RNA interactions....
متن کاملNucleocapsid protein subunits of simian virus 5, Newcastle disease virus, and Sendai virus.
Helical nucleocapsids of each of the paramyxoviruses simian virus 5 (SV5), Newcastle disease virus (NDV), and Sendai virus have been isolated in two different forms. One form contains larger protein subunits and is obtained from mature virions or infected cells dispersed by ethylenediaminetetraacetic acid. The other form possesses smaller subunits and is obtained from infected cells dispersed b...
متن کاملAlteration of Sendai virus morphogenesis and nucleocapsid incorporation due to mutation of cysteine residues of the matrix protein.
The matrix (M) protein of Sendai virus (SeV) has five cysteine residues, at positions 83, 106, 158, 251, and 295. To determine the roles of the cysteine residues in viral assembly, we generated mutant M cDNA possessing a substitution to serine at one of the cysteine residues or at all of the cysteine residues. Some mutant M proteins were unstable when expressed in cultured cells, suggesting tha...
متن کاملAn amino-terminal domain of the Sendai virus nucleocapsid protein is required for template function in viral RNA synthesis.
The nucleocapsid protein (NP) of Sendai virus encapsidates the genome RNA, forming a helical nucleocapsid which is the template for RNA synthesis by the viral RNA polymerase. The NP protein is thought to have both structural and functional roles, since it is an essential component of the NP0-P (P, phosphoprotein), NP-NP, nucleocapsid-polymerase, and RNA-NP complexes required during viral RNA re...
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ژورنال
عنوان ژورنال: Journal of General Virology
سال: 1999
ISSN: 0022-1317,1465-2099
DOI: 10.1099/0022-1317-80-6-1383