Open Access
Open access
PLoS ONE, volume 9, issue 8, pages e105394

Selenium-Based S-Adenosylmethionine Analog Reveals the Mammalian Seven-Beta-Strand Methyltransferase METTL10 to Be an EF1A1 Lysine Methyltransferase

Shimazu Tadahiro 1
Barjau Joaquin 2
Sohtome Yoshihiro 2
Sodeoka Mikiko 2
Shinkai Yoichi 1
1
 
Cellular Memory Laboratory, RIKEN, Wako, Japan
2
 
Synthetic Organic Chemistry Laboratory, RIKEN, Wako, Japan
Publication typeJournal Article
Publication date2014-08-21
Journal: PLoS ONE
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor3.7
ISSN19326203
Multidisciplinary
Abstract
Lysine methylation has been extensively studied in histones, where it has been shown to provide specific epigenetic marks for the regulation of gene expression; however, the molecular mechanism and physiological function of lysine methylation in proteins other than histones remains to be fully addressed. To better understand the substrate diversity of lysine methylation, S-adenosylmethionine (SAM) derivatives with alkyne-moieties have been synthesized. A selenium-based SAM analog, propargylic Se-adenosyl-l-selenomethionine (ProSeAM), has a wide spectrum of reactivity against various lysine methyltransferases (KMTs) with sufficient stability to support enzymatic reactions in vitro. By using ProSeAM as a chemical probe for lysine methylation, we identified substrates for two seven-beta-strand KMTs, METTL21A and METTL10, on a proteomic scale in mammalian cells. METTL21A has been characterized as a heat shock protein (HSP)-70 methyltransferase. Mammalian METTL10 remains functionally uncharacterized, although its ortholog in yeast, See1, has been shown to methylate the translation elongation factor eEF1A. By using ProSeAM-mediated alkylation followed by purification and quantitative MS analysis, we confirmed that METTL21A labels HSP70 family proteins. Furthermore, we demonstrated that METTL10 also methylates the eukaryotic elongation factor EF1A1 in mammalian cells. Subsequent biochemical characterization revealed that METTL10 specifically trimethylates EF1A1 at lysine 318 and that siRNA-mediated knockdown of METTL10 decreases EF1A1 methylation levels in vivo. Thus, our study emphasizes the utility of the synthetic cofactor ProSeAM as a chemical probe for the identification of non-histone substrates of KMTs.

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Shimazu T. et al. Selenium-Based S-Adenosylmethionine Analog Reveals the Mammalian Seven-Beta-Strand Methyltransferase METTL10 to Be an EF1A1 Lysine Methyltransferase // PLoS ONE. 2014. Vol. 9. No. 8. p. e105394.
GOST all authors (up to 50) Copy
Shimazu T., Barjau J., Sohtome Y., Sodeoka M., Shinkai Y. Selenium-Based S-Adenosylmethionine Analog Reveals the Mammalian Seven-Beta-Strand Methyltransferase METTL10 to Be an EF1A1 Lysine Methyltransferase // PLoS ONE. 2014. Vol. 9. No. 8. p. e105394.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1371/journal.pone.0105394
UR - https://doi.org/10.1371%2Fjournal.pone.0105394
TI - Selenium-Based S-Adenosylmethionine Analog Reveals the Mammalian Seven-Beta-Strand Methyltransferase METTL10 to Be an EF1A1 Lysine Methyltransferase
T2 - PLoS ONE
AU - Shimazu, Tadahiro
AU - Barjau, Joaquin
AU - Sohtome, Yoshihiro
AU - Sodeoka, Mikiko
AU - Shinkai, Yoichi
PY - 2014
DA - 2014/08/21 00:00:00
PB - Public Library of Science (PLoS)
SP - e105394
IS - 8
VL - 9
PMID - 25144183
SN - 1932-6203
ER -
BibTex |
Cite this
BibTex Copy
@article{2014_Shimazu,
author = {Tadahiro Shimazu and Joaquin Barjau and Yoshihiro Sohtome and Mikiko Sodeoka and Yoichi Shinkai},
title = {Selenium-Based S-Adenosylmethionine Analog Reveals the Mammalian Seven-Beta-Strand Methyltransferase METTL10 to Be an EF1A1 Lysine Methyltransferase},
journal = {PLoS ONE},
year = {2014},
volume = {9},
publisher = {Public Library of Science (PLoS)},
month = {aug},
url = {https://doi.org/10.1371%2Fjournal.pone.0105394},
number = {8},
pages = {e105394},
doi = {10.1371/journal.pone.0105394}
}
MLA
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Shimazu, Tadahiro, et al. “Selenium-Based S-Adenosylmethionine Analog Reveals the Mammalian Seven-Beta-Strand Methyltransferase METTL10 to Be an EF1A1 Lysine Methyltransferase.” PLoS ONE, vol. 9, no. 8, Aug. 2014, p. e105394. https://doi.org/10.1371%2Fjournal.pone.0105394.
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