title: Feline calicivirus can tolerate gross changes of its minor capsid protein expression levels induced by changing translation reinitiation frequency or use of a separate VP2-coding mRNA.
abstract: Caliciviruses use reinitiation of translation governed by a 'termination upstream ribosomal binding site' (TURBS) for expression of their minor capsid protein VP2. Mutation analysis allowed to identify sequences surrounding the translational start/stop site of the feline calicivirus (FCV) that fine tune reinitiation frequency. A selection of these changes was introduced into the infectious FCV cDNA clone to check the influence of altered VP2 levels on virus replication. In addition, full length constructs were established that displayed a conformation, in which VP2 expression occurred under control of a duplicated subgenomic promoter. Viable viruses recovered from such constructs revealed a rather broad range of VP2 expression levels but comparable growth kinetics showing that caliciviruses can tolerate gross changes of the VP2 expression level.
authors.affiliation: Institut für Immunologie, Friedrich-Loeffler-Institut, Tübingen, Germany.
authors.forename: Maria
authors.initials: M
authors.lastname: Haβ
authors.affiliation: Institut für Immunologie, Friedrich-Loeffler-Institut, Tübingen, Germany.
authors.forename: Christine
authors.initials: C
authors.lastname: Luttermann
authors.affiliation: Institut für Immunologie, Friedrich-Loeffler-Institut, Tübingen, Germany.
authors.forename: Gregor
authors.initials: G
authors.lastname: Meyers
mesh_terms: D000818:Animals; D002139:Caliciviridae / Q000235:genetics / Q000502:physiology*; D017250:Caliciviridae Infections / Q000821:virology; D036022:Capsid Proteins / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism*; D002415:Cats; D002460:Cell Line; D006224:Cricetinae; D009690:Nucleic Acid Conformation; D012333:RNA, Messenger / Q000378:metabolism*; D012367:RNA, Viral / Q000378:metabolism; D014779:Virus Replication
chemical_list: D036022:Capsid Proteins; D012333:RNA, Messenger; D012367:RNA, Viral