Matrix protein of cell-associated subacute sclerosing panencephalitis viruses.
نویسندگان
چکیده
The nucleotide sequence has been determined for the matrix (M) protein gene of three strains, Niigata-1, ZH and Biken, of cell-associated subacute sclerosing panencephalitis (SSPE) virus. The M proteins of the Niigata-1 and ZH strains were found to terminate prematurely as a result of nonsense mutations at nucleotide positions 68 and 96 respectively. On the other hand it was predicted that the Biken strain would express M protein with 22 amino acid differences and eight additional amino acids at its C terminus in comparison to the M protein of the Edmonston strain of measles virus. Radiolabelling of cells carrying the Biken strain showed the production of an M protein with considerably altered immunoreactivity and a marked reduction in intracellular stability. Either premature termination or rapid degradation of the M protein may underlie the defectiveness of these three strains of SSPE virus.
منابع مشابه
Multiple viral mutations rather than host factors cause defective measles virus gene expression in a subacute sclerosing panencephalitis cell line.
A measles virus (MV) genome originally derived from brain cells of a subacute sclerosing panencephalitis patient expressed in IP-3-Ca cells an unstable MV matrix protein and was unable to produce virus particles. Transfection of this MV genome into other cell lines did not relieve these defects, showing that they are ultimately encoded by viral mutations. However, these defects were partially r...
متن کاملAntibody response to structural proteins of measles virus in patients with natural measles and subacute sclerosing panencephalitis.
By immunoprecipitation and SDS-polyacrylamide gel electrophoresis, antibody responses to the structural proteins of measles virus were examined on patients with various forms of natural measles, atypical measles, and subacute sclerosing panencephalitis (SSPE). The serum of atypical measles most strongly reacted with four structural proteins, i.e., hemagglutinin (H), nucleocapsid (NC), fusion (F...
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ورودعنوان ژورنال:
- The Journal of general virology
دوره 70 ( Pt 8) شماره
صفحات -
تاریخ انتشار 1989