J 2013

Physicochemical analysis of rotavirus segment 11 supports a ‘modified panhandle’ structure and not the predicted alternative tRNA-like structure (TRLS)

BISWAS, Subhajit, Wilson LI, Emily MANKTELOW, Jonathan LEVER, Laura E. EASTON et. al.

Basic information

Original name

Physicochemical analysis of rotavirus segment 11 supports a ‘modified panhandle’ structure and not the predicted alternative tRNA-like structure (TRLS)

Authors

BISWAS, Subhajit, Wilson LI, Emily MANKTELOW, Jonathan LEVER, Laura E. EASTON, Peter LUKAVSKY, Ulrich DESSELBERGER and Andrew M LEVER

Edition

ARCHIVES OF VIROLOGY, Vídeň, SPRINGER WIEN, 2013, 0304-8608

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

Genetics and molecular biology

Country of publisher

Austria

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 2.282

Organization unit

Central European Institute of Technology

UT WoS

000330960200006

Keywords in English

rotavirus; tRNA-like structure; RNA 11

Tags

Tags

International impact, Reviewed
Změněno: 10/12/2013 14:07, Olga Křížová

Abstract

V originále

Rotaviruses are a major cause of acute gastroenteritis, which is often fatal in infants. The viral genome consists of 11 double-stranded RNA segments, but little is known about their cis-acting sequences and structural elements. Covariation studies and phylogenetic analysis exploring the potential structure of RNA11 of rotaviruses suggested that, besides the previously predicted ‘‘modified panhandle’’ structure, the 5’ and 3’ termini of one of the isoforms of the bovine rotavirus UKtc strain may interact to form a tRNA-like structure (TRLS). Such TRLSs have been identified in RNAs of plant viruses, where they are important for enhancing replication and packaging. However, using tRNA mimicry assays (in vitro aminoacylation and 3’- adenylation), we found no biochemical evidence for tRNA-like functions of RNA11. Capping, synthetic 3’ adenylation and manipulation of divalent cation concentrations did not change this finding. NMR studies on a 5’- and 3’-deletion construct of RNA11 containing the putative intra-strand complementary sequences supported a predominant panhandle structure and did not conform to a cloverleaf fold despite the strong evidence for a predicted structure in this conserved region of the viral RNA. Additional viral or cellular factors may be needed to stabilise it into a form with tRNA-like properties