複合体: METTL6 tRNA SerRS complex in a 1:2:2 stoichiometry
複合体: Sers
タンパク質・ペプチド: SerRS homodimer
複合体: tRNA
RNA: Serine tRNA
キーワード
tRNA / SerRS / Serine tRNA / RNA BINDING PROTEIN
機能・相同性
機能・相同性情報
selenocysteine-tRNA ligase activity / negative regulation of vascular endothelial growth factor production / selenocysteine incorporation / serine-tRNA ligase / serine-tRNA ligase activity / seryl-tRNA aminoacylation / Cytosolic tRNA aminoacylation / tRNA modification / Selenocysteine synthesis / negative regulation of angiogenesis ...selenocysteine-tRNA ligase activity / negative regulation of vascular endothelial growth factor production / selenocysteine incorporation / serine-tRNA ligase / serine-tRNA ligase activity / seryl-tRNA aminoacylation / Cytosolic tRNA aminoacylation / tRNA modification / Selenocysteine synthesis / negative regulation of angiogenesis / molecular adaptor activity / cytoplasmic translation / tRNA binding / RNA polymerase II cis-regulatory region sequence-specific DNA binding / translation / enzyme binding / negative regulation of transcription by RNA polymerase II / protein homodimerization activity / extracellular exosome / ATP binding / nucleus / cytosol / cytoplasm 類似検索 - 分子機能
Serine-tRNA synthetase, type1, N-terminal / Seryl-tRNA synthetase N-terminal domain / Serine-tRNA ligase, type1 / Serine-tRNA ligase catalytic core domain / Serine-tRNA synthetase, type1, N-terminal domain superfamily / Class I and II aminoacyl-tRNA synthetase, tRNA-binding arm / Aminoacyl-tRNA synthetase, class II (G/ P/ S/T) / tRNA synthetase class II core domain (G, H, P, S and T) / Aminoacyl-tRNA synthetase, class II / Aminoacyl-transfer RNA synthetases class-II family profile. / Class II Aminoacyl-tRNA synthetase/Biotinyl protein ligase (BPL) and lipoyl protein ligase (LPL) 類似検索 - ドメイン・相同性
ジャーナル: Nat Struct Mol Biol / 年: 2024 タイトル: Structural basis of tRNA recognition by the mC RNA methyltransferase METTL6 in complex with SerRS seryl-tRNA synthetase. 著者: Philipp Throll / Luciano G Dolce / Palma Rico-Lastres / Katharina Arnold / Laura Tengo / Shibom Basu / Stefanie Kaiser / Robert Schneider / Eva Kowalinski / 要旨: Methylation of cytosine 32 in the anticodon loop of tRNAs to 3-methylcytosine (mC) is crucial for cellular translation fidelity. Misregulation of the RNA methyltransferases setting this modification ...Methylation of cytosine 32 in the anticodon loop of tRNAs to 3-methylcytosine (mC) is crucial for cellular translation fidelity. Misregulation of the RNA methyltransferases setting this modification can cause aggressive cancers and metabolic disturbances. Here, we report the cryo-electron microscopy structure of the human mC tRNA methyltransferase METTL6 in complex with seryl-tRNA synthetase (SerRS) and their common substrate tRNA. Through the complex structure, we identify the tRNA-binding domain of METTL6. We show that SerRS acts as the tRNA substrate selection factor for METTL6. We demonstrate that SerRS augments the methylation activity of METTL6 and that direct contacts between METTL6 and SerRS are necessary for efficient tRNA methylation. Finally, on the basis of the structure of METTL6 in complex with SerRS and tRNA, we postulate a universal tRNA-binding mode for mC RNA methyltransferases, including METTL2 and METTL8, suggesting that these mammalian paralogs use similar ways to engage their respective tRNA substrates and cofactors.