+検索条件
-Structure paper
タイトル | Dynamic association of human Ebp1 with the ribosome. |
---|---|
ジャーナル・号・ページ | RNA, Vol. 27, Issue 4, Page 411-419, Year 2021 |
掲載日 | 2021年1月21日 |
著者 | Varun Bhaskar / Jessica Desogus / Alexandra Graff-Meyer / Andreas D Schenk / Simone Cavadini / Jeffrey A Chao / |
PubMed 要旨 | Ribosomes are the macromolecular machines at the heart of protein synthesis; however, their function can be modulated by a variety of additional protein factors that directly interact with them. ...Ribosomes are the macromolecular machines at the heart of protein synthesis; however, their function can be modulated by a variety of additional protein factors that directly interact with them. Here, we report the cryo-EM structure of human Ebp1 (p48 isoform) bound to the human 80S ribosome at 3.3 Å resolution. Ebp1 binds in the vicinity of the peptide exit tunnel on the 80S ribosome, and this binding is enhanced upon puromycin-mediated translational inhibition. The association of Ebp1 with the 80S ribosome centers around its interaction with ribosomal proteins eL19 and uL23 and the 28S rRNA. Further analysis of the Ebp1-ribosome complex suggests that Ebp1 can rotate around its insert domain, which may enable it to assume a wide range of conformations while maintaining its interaction with the ribosome. Structurally, Ebp1 shares homology with the methionine aminopeptidase 2 family of enzymes; therefore, this inherent flexibility may also be conserved. |
リンク | RNA / PubMed:33479117 / PubMed Central |
手法 | EM (単粒子) |
解像度 | 3.3 Å |
構造データ | EMDB-12189, PDB-7bhp: |
化合物 | ChemComp-MG: ChemComp-ZN: ChemComp-HOH: |
由来 |
|
キーワード | RIBOSOME / EBP1 / PAG2G4 / MetAP2 / metalloprotease / ES27 / ribosomal tunnel exit |