Abstract
The binding between tyrosyl-tRNA synthetase (E.coli) and the alkylanalogue of the aminoacyladenylate, tyrosinyl-5'-AMP, has been investigated by fluorescence titrations and rapid mixing experiments. Tyrosyl-tRNA synthetase has two equivalent and independent binding sites for tyrosinyl-5'-AMP. The intrinsic binding constant is 4 x 10(7)M-1. The binding sites for tRNATyr and tyrosinyl-5'-AMP are independent of each other, the anticooperative mode of tRNA binding being preserved in the presence of tyrosinyl-5-AMP.
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Selected References
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- Blanquet S., Fayat G., Waller J. P., Iwatsubo M. The mechanism of reaction of methionyl-tRNA synthetase from Escherichia coli. Interaction of the enzyme with ligands of the amino-acid-activation reaction. Eur J Biochem. 1972 Jan 21;24(3):461–469. doi: 10.1111/j.1432-1033.1972.tb19707.x. [DOI] [PubMed] [Google Scholar]
- Blanquet S., Iwatsubo M., Waller J. P. The mechanism of action of methionyl-tRNA synthetase from Escherichia coli. 1. Fluorescence studies on tRNAMet binding as a function of ligands, ions and pH. Eur J Biochem. 1973 Jul 2;36(1):213–226. doi: 10.1111/j.1432-1033.1973.tb02903.x. [DOI] [PubMed] [Google Scholar]
- Calendar R., Berg P. Purification and physical characterization of tyrosyl ribonucleic acid synthetases from Escherichia coli and Bacillus subtilis. Biochemistry. 1966 May;5(5):1681–1690. doi: 10.1021/bi00869a033. [DOI] [PubMed] [Google Scholar]
- Fersht A. R., Ashford J. S., Bruton C. J., Jakes R., Koch G. L., Hartley B. S. Active site titration and aminoacyl adenylate binding stoichiometry of aminoacyl-tRNA synthetases. Biochemistry. 1975 Jan 14;14(1):1–4. doi: 10.1021/bi00672a001. [DOI] [PubMed] [Google Scholar]
- Fersht A. R. Demonstration of two active sites on a monomeric aminoacyl-tRNA synthetase. Possible roles of negative cooperativity and half-of-the-sites reactivity in oligomeric enzymes. Biochemistry. 1975 Jan 14;14(1):5–12. doi: 10.1021/bi00672a002. [DOI] [PubMed] [Google Scholar]
- Fersht A. R., Mulvey R. S., Koch G. L. Ligand binding and enzymic catalysis coupled through subunits in tyrosyl-tRNA synthetase. Biochemistry. 1975 Jan 14;14(1):13–18. doi: 10.1021/bi00672a003. [DOI] [PubMed] [Google Scholar]
- Holler E., Calvin M. Isoleucyl transfer ribonucleic acid synthetase of Escherichia coli B. A rapid kinetic investigation of the L-isoleucine-activating reaction. Biochemistry. 1972 Sep 26;11(20):3741–3752. doi: 10.1021/bi00770a012. [DOI] [PubMed] [Google Scholar]
- Jakes R., Fersht A. R. Tyrosyl-tRNA synthetase from Escherichia coli. Stoichiometry of ligand binding and half-of-the-sites reactivity in aminoacylation. Biochemistry. 1975 Jul 29;14(15):3344–3350. doi: 10.1021/bi00686a009. [DOI] [PubMed] [Google Scholar]
- Krauss G., Pingoud A., Boehme D., Riesner D., Peters F., Maas G. Equivalent and non-equivalent binding sites for tRNA on aminoacyl-tRNA synthetases. Eur J Biochem. 1975 Jul 15;55(3):517–529. doi: 10.1111/j.1432-1033.1975.tb02189.x. [DOI] [PubMed] [Google Scholar]
- Krauss G., Riesner D., Maass G. Mechanism of tRNA-synthetase recognition: role of terminal A. Nucleic Acids Res. 1977 Jul;4(7):2253–2262. doi: 10.1093/nar/4.7.2253. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Monteilhet C., Blow D. M. Binding of tyrosine, adenosine triphosphate and analogues to crystalline tyrosyl transfer RNA synthetase. J Mol Biol. 1978 Jul 15;122(4):407–417. doi: 10.1016/0022-2836(78)90418-7. [DOI] [PubMed] [Google Scholar]
- Mulvey R. S., Fersht A. R. Ligand binding stoichiometries, subunit structure, and slow transitions in aminoacyl-tRNA synthetases. Biochemistry. 1977 Sep 6;16(18):4005–4013. doi: 10.1021/bi00637a011. [DOI] [PubMed] [Google Scholar]
- Riesner D., Pingoud A., Boehme D., Peters F., Maass G. Distinct steps in the specific binding of tRNA to aminoacyl-tRNA synthetase. Temperature-jump studies on the serine-specific system from yeast and the tyrosine-specific system from Escherichia coli. Eur J Biochem. 1976 Sep;68(1):71–80. doi: 10.1111/j.1432-1033.1976.tb10765.x. [DOI] [PubMed] [Google Scholar]
