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. 1981 Mar;78(3):1606-8.
doi: 10.1073/pnas.78.3.1606.

Conformational activation of the yeast phenylalanyl-tRNA synthetase catalytic site induced by tRNAPhe interaction: triggering of adenosine or CpCpA trinucleoside diphosphate aminoacylation upon binding of tRNAPhe lacking these residues

M Renaud, H Bacha, P Remy, J P Ebel

Conformational activation of the yeast phenylalanyl-tRNA synthetase catalytic site induced by tRNAPhe interaction: triggering of adenosine or CpCpA trinucleoside diphosphate aminoacylation upon binding of tRNAPhe lacking these residues

M Renaud et al. Proc Natl Acad Sci U S A. 1981 Mar.

Abstract

Adenosine or CpCpA trinucleoside diphosphate can be aminoacylated by phenylalanyl-tRNA synthetase [L-phenylalanine:tRNAPhe ligase (AMP forming), EC 6.1.1.20] when the reaction takes place in the presence of tRNAPhe deprived of its 3' adenosine or pCpCpA terminus. This shows that, upon interaction with tRNA, a structural alteration of the enzyme's active site is achieved. This process may be a determining step in the specificity of the aminoacylation reaction.

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