4N49

Cap-specific mRNA (nucleoside-2'-O-)-methyltransferase 1 Protein in complex with m7GpppG and SAM

4N49 の概要

• エントリーDOI: 10.2210/pdb4n49/pdb
• 関連するPDBエントリー: 4N48 4N4A
• 分子名称: Cap-specific mRNA (nucleoside-2'-O-)-methyltransferase 1, S-ADENOSYLMETHIONINE, 7N-METHYL-8-HYDROGUANOSINE-5'-TRIPHOSPHATE, ... (5 entities in total)
• 機能のキーワード: methyltransferase, mrna cap methylation, mrna, transferase
• 由来する生物種: Homo sapiens (human)
• 細胞内の位置: Nucleus : Q8N1G2
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 49896.40

構造登録者

Smietanski, M.,Werener, M.,Purta, E.,Kaminska, K.H.,Stepinski, J.,Darzynkiewicz, E.,Nowotny, M.,Bujnicki, J.M. (登録日: 2013-10-08, 公開日: 2014-01-22, 最終更新日: 2023-09-20)

主引用文献

Smietanski, M.,Werner, M.,Purta, E.,Kaminska, K.H.,Stepinski, J.,Darzynkiewicz, E.,Nowotny, M.,Bujnicki, J.M.
Structural analysis of human 2'-O-ribose methyltransferases involved in mRNA cap structure formation.
Nat Commun, 5:3004-3004, 2014

PubMed Abstract: The 5' cap of human messenger RNA contains 2'-O-methylation of the first and often second transcribed nucleotide that is important for its processing, translation and stability. Human enzymes that methylate these nucleotides, termed CMTr1 and CMTr2, respectively, have recently been identified. However, the structures of these enzymes and their mechanisms of action remain unknown. In the present study, we solve the crystal structures of the active CMTr1 catalytic domain in complex with a methyl group donor and a capped oligoribonucleotide, thereby revealing the mechanism of specific recognition of capped RNA. This mechanism differs significantly from viral enzymes, thus providing a framework for their specific targeting. Based on the crystal structure of CMTr1, a comparative model of the CMTr2 catalytic domain is generated. This model, together with mutational analysis, leads to the identification of residues involved in RNA and methyl group donor binding.

PubMed: 24402442
DOI: 10.1038/ncomms4004

実験手法

X-RAY DIFFRACTION (1.9 Å)