Terminal uridylyltransferase 1

UniProtKB accession:  Q8WQX5

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Terminal uridylyltransferase which is involved in the post-transcriptional editing of mitochondrial RNA, a process involving the addition and deletion of uridine (U) nucleotides in the pre-RNA (PubMed:11893335, PubMed:20086102, PubMed:26833087, PubMed:27744351). Specifically, catalyzes the addition of Us to the 3'-hydroxyl group of guided RNA (gRNA), ribosomal RNA (rRNA) and some mRNAs (PubMed:11893335, PubMed:20086102, PubMed:26833087, PubMed:27744351). As part of the mitochondrial 3' processome (MPsome), catalyzes the primary 3' uridylation of gRNA precursors to facilitate their recognition and to induce their processive 3'-5' degradation by DSS1, and the secondary 3' uridylation of mature gRNAs (PubMed:26833087). Involved in the 3' uridylylation of the long A/U tail of some edited and never-edited mRNAs (PubMed:20086102). Promotes 3' uridylylation-mediated decay of some never-edited mRNAs (PubMed:20086102). Does not mediate RNA-independent UTP polymerization (PubMed:27744351).