FUNCTION: Pseudouridine synthase that catalyzes pseudouridylation of mRNAs and tRNAs (PubMed:28073919, PubMed:31477916, PubMed:32926445). Mediates pseudouridylation of mRNAs with the consensus sequence 5'-GUUCNANNC-3', harboring a stem-loop structure (PubMed:28073919, PubMed:31477916). Constitutes t...
FUNCTION: Pseudouridine synthase that catalyzes pseudouridylation of mRNAs and tRNAs (PubMed:28073919, PubMed:31477916, PubMed:32926445). Mediates pseudouridylation of mRNAs with the consensus sequence 5'-GUUCNANNC-3', harboring a stem-loop structure (PubMed:28073919, PubMed:31477916). Constitutes the major pseudouridine synthase acting on mRNAs (PubMed:28073919). Also catalyzes pseudouridylation of some tRNAs, including synthesis of pseudouridine(55) from uracil-55, in the psi GC loop of a subset of tRNAs (PubMed:32926445, PubMed:33023933). Promotes the processing of pri-let-7 microRNAs (pri-miRNAs) independently of its RNA pseudouridylate synthase activity (PubMed:32926445). Acts by binding to the stem-loop structure on pri-let-7, preventing LIN28-binding (LIN28A and/or LIN28B), thereby enhancing the interaction between pri-let-7 and the microprocessor DGCR8, which mediates miRNA maturation (PubMed:32926445). {ECO:0000269|PubMed:28073919, ECO:0000269|PubMed:31477916, ECO:0000269|PubMed:32926445, ECO:0000269|PubMed:33023933}.
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GO - Biological processes (BP):
mRNA pseudouridine synthesis [GO:1990481]; tRNA modification [GO:0006400]...
mRNA pseudouridine synthesis [GO:1990481]; tRNA modification [GO:0006400]
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GO - Molecular function (MF):
pseudouridine synthase activity [GO:0009982]; RNA binding [GO:0003723]...
pseudouridine synthase activity [GO:0009982]; RNA binding [GO:0003723]
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GO - Cellular component (CC):
cytosol [GO:0005829]; mitochondrion [GO:0005739]; nucleus [GO:0005634]...
cytosol [GO:0005829]; mitochondrion [GO:0005739]; nucleus [GO:0005634]
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