Poliovirus Mutants at Histidine 195 of VP2 Do Not Cleave VP0 into VP2 and VP4
نویسندگان
چکیده
منابع مشابه
Cleavage sites within the poliovirus capsid protein precursors.
Partial amino-terminal sequence analysis was performed on radiolabeled polio-virus capsid proteins VP1, VP2, and VP3. A computer-assisted comparison of the amino acid sequences obtained with that predicted by the nucleotide sequence of the poliovirus genome allows assignment of the amino terminus of each capsid protein to a unique position within the virus polyprotein. Sequence analysis of tryp...
متن کاملA comparison of the VP1, VP2, and VP4 regions for molecular typing of human enteroviruses.
The VP4, VP2, and VP1 gene regions were evaluated for their usefulness in typing human enteroviruses. Three published RT-PCR primers sets targeting separately these three gene regions were used. Initially, from a total of 86 field isolates (36 HEV-A, 40 HEV-B, and 10 HEV-C) tested, 100% concordance in HEV-A was identified from all three gene regions (VP4, VP2, and VP1). However, for HEV-B and H...
متن کاملAn increase in acid resistance of foot-and-mouth disease virus capsid is mediated by a tyrosine replacement of the VP2 histidine previously associated with VP0 cleavage.
The foot-and-mouth disease virus (FMDV) capsid is highly acid labile, but introduction of amino acid replacements, including an N17D change in VP1, can increase its acid resistance. Using mutant VP1 N17D as a starting point, we isolated a virus with higher acid resistance carrying an additional replacement, VP2 H145Y, in a residue highly conserved among picornaviruses, which has been proposed t...
متن کاملPoliovirus Particles do not Form in Preinfected Cells with Reovirus
Background and Aims: Inhibition of viral growth in coinfected cells with two different viruses has been described. This phenomenon known as viral interference can occur in several virus host systems such as interference of enterovirus infection on poliovirus vaccine strains. In this study we superinfected reovirus infected HeLa cells with poliovirus to determine if poliovirus can replicate in s...
متن کاملRole and mechanism of the maturation cleavage of VP0 in poliovirus assembly: structure of the empty capsid assembly intermediate at 2.9 A resolution.
The crystal structure of the P1/Mahoney poliovirus empty capsid has been determined at 2.9 A resolution. The empty capsids differ from mature virions in that they lack the viral RNA and have yet to undergo a stabilizing maturation cleavage of VP0 to yield the mature capsid proteins VP4 and VP2. The outer surface and the bulk of the protein shell are very similar to those of the mature virion. T...
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ژورنال
عنوان ژورنال: Journal of Virology
سال: 1999
ISSN: 0022-538X,1098-5514
DOI: 10.1128/jvi.73.11.9072-9079.1999