The pre-mRNA retention and splicing complex controls tRNA maturation by promoting TAN1 expression
(2013) In Nucleic Acids Research 41(11). p.78-5669- Abstract
The conserved pre-mRNA retention and splicing (RES) complex, which in yeast consists of Bud13p, Snu17p and Pml1p, is thought to promote nuclear retention of unspliced pre-mRNAs and enhance splicing of a subset of transcripts. Here, we find that the absence of Bud13p or Snu17p causes greatly reduced levels of the modified nucleoside N(4)-acetylcytidine (ac(4)C) in tRNA and that a lack of Pml1p reduces ac(4)C levels at elevated temperatures. The ac(4)C nucleoside is normally found at position 12 in the tRNA species specific for serine and leucine. We show that the tRNA modification defect in RES-deficient cells is attributable to inefficient splicing of TAN1 pre-mRNA and the effects of reduced Tan1p levels on formation of ac(4)C. Analyses... (More)
The conserved pre-mRNA retention and splicing (RES) complex, which in yeast consists of Bud13p, Snu17p and Pml1p, is thought to promote nuclear retention of unspliced pre-mRNAs and enhance splicing of a subset of transcripts. Here, we find that the absence of Bud13p or Snu17p causes greatly reduced levels of the modified nucleoside N(4)-acetylcytidine (ac(4)C) in tRNA and that a lack of Pml1p reduces ac(4)C levels at elevated temperatures. The ac(4)C nucleoside is normally found at position 12 in the tRNA species specific for serine and leucine. We show that the tRNA modification defect in RES-deficient cells is attributable to inefficient splicing of TAN1 pre-mRNA and the effects of reduced Tan1p levels on formation of ac(4)C. Analyses of cis-acting elements in TAN1 pre-mRNA showed that the intron sequence between the 5' splice site and branchpoint is necessary and sufficient to mediate RES dependency. We also show that in RES-deficient cells, the TAN1 pre-mRNA is targeted for degradation by the cytoplasmic nonsense-mediated mRNA decay pathway, indicating that poor nuclear retention may contribute to the tRNA modification defect. Our results demonstrate that TAN1 pre-mRNA processing has an unprecedented requirement for RES factors and that the complex controls the formation of ac(4)C in tRNA.
(Less)
- author
- Zhou, Yang ; Chen, Changchun and Johansson, Marcus J O LU
- publishing date
- 2013-06
- type
- Contribution to journal
- publication status
- published
- keywords
- Carrier Proteins/genetics, Cytidine/analogs & derivatives, Gene Deletion, Gene Expression Regulation, Fungal, Introns, Mutation, Nonsense Mediated mRNA Decay, RNA Precursors/metabolism, RNA Splicing, RNA, Messenger/metabolism, RNA, Transfer/metabolism, RNA-Binding Proteins/genetics, Ribonucleoprotein, U2 Small Nuclear/genetics, Saccharomyces cerevisiae Proteins/genetics
- in
- Nucleic Acids Research
- volume
- 41
- issue
- 11
- pages
- 78 - 5669
- publisher
- Oxford University Press
- external identifiers
-
- scopus:84878885511
- pmid:23605039
- ISSN
- 1362-4962
- DOI
- 10.1093/nar/gkt269
- language
- English
- LU publication?
- no
- id
- 41b1ca6f-a5ec-4662-baec-e0d3a2040b9f
- date added to LUP
- 2024-03-05 16:35:18
- date last changed
- 2024-04-18 07:31:29
@article{41b1ca6f-a5ec-4662-baec-e0d3a2040b9f,
abstract = {{<p>The conserved pre-mRNA retention and splicing (RES) complex, which in yeast consists of Bud13p, Snu17p and Pml1p, is thought to promote nuclear retention of unspliced pre-mRNAs and enhance splicing of a subset of transcripts. Here, we find that the absence of Bud13p or Snu17p causes greatly reduced levels of the modified nucleoside N(4)-acetylcytidine (ac(4)C) in tRNA and that a lack of Pml1p reduces ac(4)C levels at elevated temperatures. The ac(4)C nucleoside is normally found at position 12 in the tRNA species specific for serine and leucine. We show that the tRNA modification defect in RES-deficient cells is attributable to inefficient splicing of TAN1 pre-mRNA and the effects of reduced Tan1p levels on formation of ac(4)C. Analyses of cis-acting elements in TAN1 pre-mRNA showed that the intron sequence between the 5' splice site and branchpoint is necessary and sufficient to mediate RES dependency. We also show that in RES-deficient cells, the TAN1 pre-mRNA is targeted for degradation by the cytoplasmic nonsense-mediated mRNA decay pathway, indicating that poor nuclear retention may contribute to the tRNA modification defect. Our results demonstrate that TAN1 pre-mRNA processing has an unprecedented requirement for RES factors and that the complex controls the formation of ac(4)C in tRNA.</p>}},
author = {{Zhou, Yang and Chen, Changchun and Johansson, Marcus J O}},
issn = {{1362-4962}},
keywords = {{Carrier Proteins/genetics; Cytidine/analogs & derivatives; Gene Deletion; Gene Expression Regulation, Fungal; Introns; Mutation; Nonsense Mediated mRNA Decay; RNA Precursors/metabolism; RNA Splicing; RNA, Messenger/metabolism; RNA, Transfer/metabolism; RNA-Binding Proteins/genetics; Ribonucleoprotein, U2 Small Nuclear/genetics; Saccharomyces cerevisiae Proteins/genetics}},
language = {{eng}},
number = {{11}},
pages = {{78--5669}},
publisher = {{Oxford University Press}},
series = {{Nucleic Acids Research}},
title = {{The pre-mRNA retention and splicing complex controls tRNA maturation by promoting TAN1 expression}},
url = {{http://dx.doi.org/10.1093/nar/gkt269}},
doi = {{10.1093/nar/gkt269}},
volume = {{41}},
year = {{2013}},
}