Cited by 71RNA modifications and cancerRNA and protein synthesis mechanismsRNA regulation and disease

Actin-binding protein ABP140 is a methyltransferase for 3-methylcytidine at position 32 of tRNAs in Saccharomyces cerevisiae

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Noma, Akiko, Yi, Sanghyun, Katoh, Takayuki, Takai, Yoshimi, Suzuki, Takeo, Suzuki, Tsutomu·2011·RNA

Abstract

Transfer RNAs contain various modified nucleotides that are introduced enzymatically at the post-transcriptional level. In Saccharomyces cerevisiae, 3-methylcytidine (m 3 C) is found at position 32 of the tRNAs for Thr and Ser. We used a systematic reverse genetic approach combined with mass spectrometry (ribonucleome analysis), and identified the actin-binding protein ABP140 as the protein responsible for m 3 C formation in both tRNA Thr1 and tRNA Ser1. ABP140 consists of an N-terminal actin-binding sequence and a C-terminal S-adenosylmethionine (Ado-Met) binding motif. Deletion of the actin-binding sequence in ABP140 did not affect m 3 C formation, indicating that subcellular localization of ABP140 to actin filaments is not involved in tRNA modification. m 3 C formation in tRNA Thr1 could be reconstituted using recombinant Abp140p in the presence of Ado-Met, whereas m 3 C did not form in tRNA Ser1 in vitro, indicating the absence of a factor(s) required for tRNA Ser1 m 3 C formation. Thus, ABP140 has been designated TRM140 according to the preferred nomenclature. In addition, we observed a specific reduction of m 3 C formation in HeLa cells by siRNA-mediated knock down of the human ortholog of TRM140.

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Crossref · 10.1261/rna.2653411

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  • The catalytic mutants of METTL8 failed to recruit ASCC3 to nucleoli.

    “Conversely, two catalytic mutations targeting the putative SAM-binding domain of METTL8 (D’Silva et al., 2011; Noma et al., 2011) (G204A/G206A and D230A; Supplemental Figure S2a–S2c) failed to recruit ASCC3 to nucleoli”

    From Aberrant RNA methylation triggers recruitment of an alkylation repair complex (2021) · cites this paper as Noma et al., 2011

    The Discussion describes a conserved Ado-Met (SAM)-binding motif in ABP140/TRM140, and the section on METTL2B identifies the motif in a human ortholog. The paper does not identify a SAM-binding domain in METTL8 or examine the specified METTL8 mutations. It also does not address ASCC3 recruitment to nucleoli; the citation is attached to the domain description, not that reported outcome. (LLM, conf=0.83)

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Authors
Noma, A., Yi, S., Katoh, T., Takai, Y., Suzuki, T., & Suzuki, T.
Affiliations
  • The University of Tokyo (JP)
  • Kobe University (JP)
Venue
RNA
Published
2011-04-25
Volume
17
Issue
6
Pages
1111-1119
ISSN
  • 1355-8382 (ISSN-L)
  • 1469-9001
OpenAlex
W2029083573
Cited by
71
References
49
Citations by year
2025: 1 · 2024: 7 · 2023: 4 · 2022: 5 · 2021: 11 · 2020: 7 · 2019: 4 · 2018: 4 · 2017: 7 · 2016: 5 · 2015: 4 · 2014: 3 · 2013: 1 · 2012: 5
FWCI
1.56
Type
journal article
Language
en
Open access
Locations
  • RNA (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • HighWire Press Open Archive (submittedVersion)
Funders
Japan Society for the Promotion of Science (22227006, 23710265, 23112705, 21115003, 23655153)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA modifications and cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA regulation and disease
Keywords
tRNA modification, methyltransferase, S-adenosylmethionine, actin-binding proteins, Saccharomyces cerevisiae, human orthologs, HeLa cells
MeSH terms
Actins, Base Sequence, Binding Sites, Cytidine, HeLa Cells, Humans, Microfilament Proteins, Molecular Sequence Data, RNA, Transfer, tRNA Methyltransferases, S-Adenosylmethionine, Saccharomyces cerevisiae, Saccharomyces cerevisiae Proteins

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