کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6143576 1228264 2009 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cis-active RNA elements (CREs) and picornavirus RNA replication
موضوعات مرتبط
علوم زیستی و بیوفناوری ایمنی شناسی و میکروب شناسی ویروس شناسی
پیش نمایش صفحه اول مقاله
Cis-active RNA elements (CREs) and picornavirus RNA replication
چکیده انگلیسی

Our understanding of picornavirus RNA replication has improved over the past 10 years, due in large part to the discovery of cis-active RNA elements (CREs) within picornavirus RNA genomes. CREs function as templates for the conversion of VPg, the Viral Protein of the genome, into VPgpUpUOH. These so called CREs are different from the previously recognized cis-active RNA sequences and structures within the 5′ and 3′ NTRs of picornavirus genomes. Two adenosine residues in the loop of the CRE RNA structures allow the viral RNA-dependent RNA polymerase 3DPol to add two uridine residues to the tyrosine residue of VPg. Because VPg and/or VPgpUpUOH prime the initiation of viral RNA replication, the asymmetric replication of viral RNA could not be explained without an understanding of the viral RNA template involved in the conversion of VPg into VPgpUpUOH primers. We review the growing body of knowledge regarding picornavirus CREs and discuss how CRE RNAs work coordinately with viral replication proteins and other cis-active RNAs in the 5′ and 3′ NTRs during RNA replication.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Virus Research - Volume 139, Issue 2, February 2009, Pages 240-252
نویسندگان
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