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Tad1p, a yeast tRNA-specific adenosine deaminase, is related to the mammalian pre-mRNA editing enzymes ADAR1 and ADAR2.

Gerber, A, Grosjean, H, Melcher, T and Keller, W (1998) Tad1p, a yeast tRNA-specific adenosine deaminase, is related to the mammalian pre-mRNA editing enzymes ADAR1 and ADAR2. EMBO J, 17 (16). pp. 4780-4789.

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Abstract

We have identified an RNA-specific adenosine deaminase (termed Tad1p/scADAT1) from Saccharomyces cerevisiae that selectively converts adenosine at position 37 of eukaryotic tRNAAla to inosine. The activity of purified recombinant Tad1p depends on the conformation of its tRNA substrate and the enzyme was found to be inactive on all other types of RNA tested. Mutant strains in which the TAD1 gene is disrupted are viable but lack Tad1p enzyme activity and their tRNAAla is not modified at position A37. Transformation of the mutant cells with the TAD1 gene restored enzyme activity. Tad1p has significant sequence similarity with the mammalian editing enzymes which act on specific precursor-mRNAs and on long double-stranded RNA. These findings suggest an evolutionary link between pre-mRNA editing and tRNA modification.

Item Type: Article
Authors :
AuthorsEmailORCID
Gerber, AUNSPECIFIEDUNSPECIFIED
Grosjean, HUNSPECIFIEDUNSPECIFIED
Melcher, TUNSPECIFIEDUNSPECIFIED
Keller, WUNSPECIFIEDUNSPECIFIED
Date : 17 August 1998
Identification Number : https://doi.org/10.1093/emboj/17.16.4780
Uncontrolled Keywords : Adenosine Deaminase, Amino Acid Sequence, Base Sequence, DNA Primers, Molecular Sequence Data, RNA Editing, RNA Precursors, RNA, Messenger, RNA, Transfer, Saccharomyces cerevisiae, Sequence Homology, Amino Acid, Substrate Specificity
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 28 Mar 2017 13:10
Last Modified : 28 Mar 2017 13:10
URI: http://epubs.surrey.ac.uk/id/eprint/805616

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