Deletions in the 3'-terminal tRNA-like structure of brome mosaic virus RNA differentially affect aminoacylation and replication in vitro.
Deletions in cDNA clones covering the 3' 201 nucleotides of brome mosaic virus RNA 3 were produced by S1 nuclease treatment of cloned DNA linearized at several different restriction sites. Transcription of these clones yielded RNAs containing structural alterations in the 3'-terminal tRNA-like structure that is involved in aminoacylation and replication. Replicase template activity, but not aminoacylation activity, was especially sensitive to deletions in arm C, which contains a tyrosyl anticodon. Deletions in arm B were detrimental to aminoacylation, but the proportion of replicase template activity lost depended on the site of the deletion. Removal of arm D had little effect on aminoacylation and, in some instances, resulted in a 2-fold stimulation of replicase template activity.
D000604:Amino Acyl-tRNA Synthetases / Q000378:metabolism*; D000926:Anticodon; D002872:Chromosome Deletion; D009029:Mosaic Viruses / Q000235:genetics*; D012343:RNA, Transfer / Q000235:genetics; D012367:RNA, Viral / Q000235:genetics*; D012324:RNA-Dependent RNA Polymerase / Q000378:metabolism; D013329:Structure-Activity Relationship; D013698:Templates, Genetic; D014448:Tyrosine-tRNA Ligase / Q000378:metabolism*; D014779:Virus Replication
D000926:Anticodon; D012367:RNA, Viral; D012343:RNA, Transfer; D012324:RNA-Dependent RNA Polymerase; D000604:Amino Acyl-tRNA Synthetases; D014448:Tyrosine-tRNA Ligase