Functional Insight into hTRIR

Jumin      Xie; Hui      Mao

doi:10.2174/0115665240260310231016112946

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Abstract

The uncharacterized C19orf43 was discovered to be associated with hTR maturation. Our previous work indicated that C19orf43 cleaves distinct RNA types but not DNA. We then named it hTR-interacting RNase (hTRIR) (Uniprot: Q9BQ61). hTRIR works in a broad range of temperatures and pH without any divalent cations needed. hTRIR cleaves RNA at all four nucleotide sites but preferentially at purines. In addition, hTRIR digested both ends of methylated small RNA, which suggested that it was a putative ribonuclease. Later, we designed more nucleotides that methylated small RNA to determine whether it was an exo- and/or endoribonuclease. Unlike RNase A, hTRIR could digest both ends of methylated RNA oligos 5R5, which suggested it was potentially an endoribonuclease.

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DOI https://dx.doi.org/10.2174/0115665240260310231016112946	Print ISSN 1566-5240
Publisher Name Bentham Science Publisher	Online ISSN 1875-5666

Current Molecular Medicine

Functional Insight into hTRIR

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