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. 1973 Feb;113(2):891–894. doi: 10.1128/jb.113.2.891-894.1973

Evidence for the Existence of Two Arginyl-Transfer Ribonucleic Acid Synthetase Activities in Escherichia coli

D W Yem 1, L S Williams 1
PMCID: PMC285305  PMID: 4570610

Abstract

Two arginyl-transfer ribonucleic acid (tRNA) synthetase (EC 6.1.1.13, arginine: ribonucleic acid ligase adenosine monophosphate) activities were found in extracts of Escherichia coli strains AB1132 and NP2. The two arginyl-tRNA synthetase activities in extracts of strain AB1132 were found to be separable by diethylaminoethyl-cellulose column chromatography, Sephadex column fractionation, and by sucrose density gradient centrifugation. In addition, in the standard assay using extracts of strain AB1132 there were two pH optima for arginyl-tRNA synthetase activity. Furthermore, when arginyl-tRNA synthetase of strain NP2 was fractionated by hydroxylapatite column chromatography, two activities were observed which were similar to those of strain AB1132.

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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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