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- W2006528079 abstract "ABSTRACT We have previously shown that the RNA polymerase 3D pol of human rhinovirus 2 (HRV2) catalyzes the covalent linkage of UMP to the terminal protein (VPg) using poly(A) as a template (K. Gerber, E. Wimmer, and A. V. Paul, J. Virol. 75:10969–10978, 2001). The products of this in vitro reaction are VPgpU, VPgpUpU, and VPg-poly(U), the 5′ end of minus-strand RNA. In the present study we used an assay system developed for poliovirus 3D pol (A. V. Paul, E. Rieder, D. W. Kim, J. H. van Boom, and E. Wimmer, J. Virol. 74: 10359–10370, 2000) to search for a viral sequence or structure in HRV2 RNA that would provide specificity to this reaction. We now show that a small hairpin in HRV2 RNA [ cre (2A)], located in the coding sequence of 2A pro , serves as the primary template for HRV2 3D pol in the uridylylation of HRV2 VPg, yielding VPgpU and VPgpUpU. The in vitro reaction is strongly stimulated by the addition of purified HRV2 3CD pro . Our analyses suggest that HRV2 3D pol uses a “slide-back” mechanism during synthesis of the VPg-linked precursors. The corresponding cis- replicating RNA elements in the 2C ATPase coding region of poliovirus type 1 Mahoney (I. Goodfellow, Y. Chaudhry, A. Richardson, J. Meredith, J. W. Almond, W. Barclay, and D. J. Evans, J. Virol. 74:4590–4600, 2000) and VP1 of HRV14 (K. L. McKnight and S. M. Lemon, RNA 4:1569–1584, 1998) can be functionally exchanged in the assay with cre (2A) of HRV2. Mutations of either the first or the second A in the conserved A 1 A 2 A 3 CA sequence in the loop of HRV2 cre (2A) abolished both viral growth and the RNA's ability to serve as a template in the in vitro VPg uridylylation reaction." @default.
- W2006528079 created "2016-06-24" @default.
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- W2006528079 date "2001-11-15" @default.
- W2006528079 modified "2023-09-27" @default.
- W2006528079 title "Biochemical and Genetic Studies of the Initiation of Human Rhinovirus 2 RNA Replication: Identification of a <i>cis</i> -Replicating Element in the Coding Sequence of 2A <sup>pro</sup>" @default.
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- W2006528079 doi "https://doi.org/10.1128/jvi.75.22.10979-10990.2001" @default.
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