Genetic and Biochemical Studies of Poliovirus cis -Acting Replication Element cre in Relation to VPg Uridylylation
نویسندگان
چکیده
منابع مشابه
Genetic and biochemical studies of poliovirus cis-acting replication element cre in relation to VPg uridylylation.
In addition to highly conserved stem-loop structures located in the 5'- and 3'-nontranslated regions, genome replication of picornaviruses requires cis-acting RNA elements located in the coding region (termed cre) (K. L. McKnight and S. M. Lemon, J. Virol. 70:1941-1952, 1996; P. E. Lobert, N. Escriou, J. Ruelle, and T. Michiels, Proc. Natl. Acad. Sci. USA 96:11560-11565, 1999; I. Goodfellow, Y....
متن کاملBiochemical and genetic studies of the VPg uridylylation reaction catalyzed by the RNA polymerase of poliovirus.
The first step in poliovirus (PV) RNA synthesis is the covalent linkage of UMP to the terminal protein VPg. This reaction can be studied in vitro with two different assays. The simpler assay is based on a poly(A) template and requires synthetic VPg, purified RNA polymerase 3D(pol), UTP, and a divalent cation. The other assay uses specific viral sequences [cre(2C)] as a template for VPg uridylyl...
متن کاملSequence requirements for viral RNA replication and VPg uridylylation directed by the internal cis-acting replication element (cre) of human rhinovirus type 14.
Until recently, the cis-acting signals required for replication of picornaviral RNAs were believed to be restricted to the 5' and 3' noncoding regions of the genome. However, an RNA stem-loop in the VP1-coding sequence of human rhinovirus type 14 (HRV-14) is essential for viral minus-strand RNA synthesis (K. L. McKnight and S. M. Lemon, RNA 4:1569-1584, 1998). The nucleotide sequence of the api...
متن کاملPoliovirus CRE-dependent VPg uridylylation is required for positive-strand RNA synthesis but not for negative-strand RNA synthesis.
The cis-acting replication element (CRE) is a 61-nucleotide stem-loop RNA structure found within the coding sequence of poliovirus protein 2C. Although the CRE is required for viral RNA replication, its precise role(s) in negative- and positive-strand RNA synthesis has not been defined. Adenosine in the loop of the CRE RNA structure functions as the template for the uridylylation of the viral p...
متن کاملGenetic evidence for an interaction between a picornaviral cis-acting RNA replication element and 3CD protein.
Internally located, cis-acting RNA replication elements, termed cres, are essential for replication of the genomes of picornaviruses such as human rhinovirus 14 (HRV-14) and poliovirus because they template uridylylation of the protein primer, VPg, by the polymerase 3D(pol). These cres form stem-loop structures sharing a common loop motif, and the HRV-14 cre can substitute functionally for the ...
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ژورنال
عنوان ژورنال: Journal of Virology
سال: 2000
ISSN: 0022-538X,1098-5514
DOI: 10.1128/jvi.74.22.10371-10380.2000