Comparison of rat liver and Walker 256 carcinosarcoma tRNAs
- PMID: 424309
- PMCID: PMC327720
- DOI: 10.1093/nar/6.2.673
Comparison of rat liver and Walker 256 carcinosarcoma tRNAs
Abstract
The complete nucleotide sequences of both rat liver and Walker 256 mammary carcinosarcoma tRNAAsn reveal that they are identical except for the nucleotide present in the wobble position of the anticodon loop. The rat liver tRNAAsn contains the Q nucleoside, whereas the tumour tRNAAsn contains an unmodified guanosine. The tRNAs from both tissues also show significant quantitative differences in the chromatographic mobilities for isoaccepting species of tRNAAsp, tRNAAsn, tRNAHis and tRNATyr. In addition, chromatographic shifts upon cyanogen bromide treatment and analyses of the alkaline hydrolysates of these tRNAs demonstrate that those of tumour origin contain significantly less Q and Q nucleoside than their normal rat liver counterparts.
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