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. 1973 Sep;12(3):449–457. doi: 10.1128/jvi.12.3.449-457.1973

Chromatographic Analyses of Isoaccepting tRNAs from Avian Myeloblastosis Virus

Robert E Gallagher 1, Robert C Gallo 1
PMCID: PMC356650  PMID: 4355849

Abstract

Avian myeloblastosis virus (AMV) 4S RNA was tested for amino acid acceptor activity for 18 of the 20 amino acids. A nonrandom distribution of viral tRNAs was found compared with tRNA from normal liver or from AMV-infected leukemic myeloblasts, confirming previous reports. Methionine and proline tRNAs were considerably enriched, whereas glutamic acid, glutamine, serine, tyrosine, and valine tRNAs were markedly depleted in AMV relative to homologous cellular tRNAs. The seven AMV tRNAs with the greatest amino acid acceptance capacities, which were in order methionine, proline, lysine, arginine, histidine, isoleucine, and threonine tRNAs, were compared with homologous tRNAs from leukemic myeloblasts and liver by reversed-phase 5 chromatography. Of the 25 isoaccepting chromatographic fractions identified, no tRNA species unique to AMV was detected. Only methionyl-tRNA showed a substantial quantitative variation in isoaccepting species compared with the host cell. Thus, viral selectivity for amino acid-specific tRNAs is not, generally, paralleled by selectivity for individual isoaccepting tRNA species. Qualitative differences in arginyl- and histidyl-tRNA isoaccepting species were discovered in virus and leukemic myeloblasts compared with liver. This indicates the existence of structural differences in these tRNA species which could be related to virus replication or expression.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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