We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
A role for a Trypanosoma brucei cytosine RNA methyltransferase homolog in ribosomal RNA processing.
- Authors
Militello, Kevin T.; Leigh, Jennifer; Pusateri, Matthew; Read, Laurie K.; Vogler, Dineen
- Abstract
In Trypanosoma brucei, gene expression is primarily regulated posttranscriptionally making RNA metabolism critical. T. brucei has an epitranscriptome containing modified RNA bases. Yet, the identity of the enzymes catalyzing modified RNA base addition and the functions of the enzymes and modifications remain unclear. Homology searches indicate the presence of numerous T. brucei cytosine RNA methyltransferase homologs. One such homolog, TbNop2 was studied in detail. TbNop2 contains the six highly conserved motifs found in cytosine RNA methyltransferases and is evolutionarily related to the Nop2 protein family required for rRNA modification and processing. RNAi experiments targeting TbNop2 resulted in reduced levels of TbNop2 RNA and protein, and a cessation of parasite growth. Next generation sequencing of bisulfite-treated RNA (BS-seq) detected the presence of two methylation sites in the large rRNA; yet TbNop2 RNAi did not result in a significant reduction of methylation. However, TbNop2 RNAi resulted in the retention of 28S internal transcribed spacer RNAs, indicating a role for TbNop2 in rRNA processing.
- Subjects
RIBOSOMAL RNA; NUCLEOTIDE sequencing; TRYPANOSOMA brucei; RNA metabolism; RNA; RIBOSOMAL DNA; CYTOSINE
- Publication
PLoS ONE, 2024, Vol 19, Issue 4, p1
- ISSN
1932-6203
- Publication type
Article
- DOI
10.1371/journal.pone.0298521