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We began analyzing https://portlandpress.com/biochemj/article-abstract/372/2/595/40917/Caenorhabditis-elegans-pseudouridine-synthase-1?redirectedFrom=fulltext, but it redirected us to https://portlandpress.com/biochemj/article-abstract/372/2/595/40917/Caenorhabditis-elegans-pseudouridine-synthase-1?redirectedFrom=fulltext. The analysis below is for the second page.

Title[redir]:
Caenorhabditis elegans pseudouridine synthase 1 activity in vivo: tRNA is a substrate, but not U2 small nuclear RNA1 | Biochemical Journal | Portland Press
Description:
The formation of pseudouridine (Ψ) from uridine is post-transcriptional and catalysed by pseudouridine synthases, several of which have been characterized from eukaryotes. Pseudouridine synthase 1 (Pus1p) has been well characterized from yeast and mice. In yeast, Pus1p has been shown to have dual substrate specificity, modifying uridines in tRNAs and at position 44 in U2 small nuclear RNA (U2 snRNA). In order to study the in vivo activity of a metazoan Pus1p, a knockout of the gene coding for the homologue of Pus1p in Caenorhabditis elegans was obtained. The deletion encompasses the first two putative exons and includes the essential aspartate that is required for activity in truA pseudouridine synthases. The locations of most modified nucleotides on small RNAs in C. elegans are not known, and the positions of Ψ were determined on four tRNAs and U2 snRNA. The uridine at position 27 of tRNAVal (AAC), a putative Pus1p-modification site, was converted into Ψ in the wild-type worms, but the tRNAVal (AAC) from mutant worms lacked the modification. Ψ formation at positions 13, 32, 38 and 39, all of which should be modified by other pseudouridine synthases, was not affected by the loss of Pus1p. The absence of Pus1p in C. elegans had no effect on the modification of U2 snRNA in vivo, even though worm U2 snRNA has a Ψ at position 45 (the equivalent of yeast U2 snRNA position 44) and at four other positions. This result was unexpected, given the known dual specificity of yeast Pus1p.

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      url:https://dx.doi.org/10.1042/bj20021938
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      copyrightHolder:Portland Press Ltd
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      author:
            name:PATTON, Jeffrey R.
            affiliation:∗ Department of Pathology and Microbiology, University of South Carolina, School of Medicine, Columbia, SC 29208, U.S.A.
            type:Person
            name:PADGETT, Richard W.
            affiliation:† Waksman Institute, Department of Molecular Biology and Biochemistry, and Cancer Institute of New Jersey, Rutgers University, Piscataway, NJ 08854-8020, U.S.A.
            type:Person
      description:The formation of pseudouridine (Ψ) from uridine is post-transcriptional and catalysed by pseudouridine synthases, several of which have been characterized from eukaryotes. Pseudouridine synthase 1 (Pus1p) has been well characterized from yeast and mice. In yeast, Pus1p has been shown to have dual substrate specificity, modifying uridines in tRNAs and at position 44 in U2 small nuclear RNA (U2 snRNA). In order to study the in vivo activity of a metazoan Pus1p, a knockout of the gene coding for the homologue of Pus1p in Caenorhabditis elegans was obtained. The deletion encompasses the first two putative exons and includes the essential aspartate that is required for activity in truA pseudouridine synthases. The locations of most modified nucleotides on small RNAs in C. elegans are not known, and the positions of Ψ were determined on four tRNAs and U2 snRNA. The uridine at position 27 of tRNAVal (AAC), a putative Pus1p-modification site, was converted into Ψ in the wild-type worms, but the tRNAVal (AAC) from mutant worms lacked the modification. Ψ formation at positions 13, 32, 38 and 39, all of which should be modified by other pseudouridine synthases, was not affected by the loss of Pus1p. The absence of Pus1p in C. elegans had no effect on the modification of U2 snRNA in vivo, even though worm U2 snRNA has a Ψ at position 45 (the equivalent of yeast U2 snRNA position 44) and at four other positions. This result was unexpected, given the known dual specificity of yeast Pus1p.
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      headline:Caenorhabditis elegans pseudouridine synthase 1 activity in vivo: tRNA is a substrate, but not U2 small nuclear RNA1
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Person:
      name:PATTON, Jeffrey R.
      affiliation:∗ Department of Pathology and Microbiology, University of South Carolina, School of Medicine, Columbia, SC 29208, U.S.A.
      name:PADGETT, Richard W.
      affiliation:† Waksman Institute, Department of Molecular Biology and Biochemistry, and Cancer Institute of New Jersey, Rutgers University, Piscataway, NJ 08854-8020, U.S.A.

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