[Synthesis of virus-specific macromolecules and virion maturation in chick embryo cells infected with Sendai virus]

Synthesis and accumulation of virus-specific RNA, proteins and intracellular nucleocapsids are observed in Sendai virus-infected chick embryo cells for approximately 2 days postinfection. However, only an insignificant part of these products leaves the cell as a result of maturation of virus particles. It is suggested that the cause of the ineffective maturation of virions in the system under study may be in the observed instability of one of virus structural proteins in the infected cells, M protein. Some other suggestions on the mechanisms of nonpermissiveness of paramyxovirus systems expressed in literature earlier are also discussed.