translation termination factor activity / translation release factor complex / cytoplasmic translational termination / regulation of translational termination / translation release factor activity, codon specific / protein methylation / translation release factor activity / sequence-specific mRNA binding / peptidyl-tRNA hydrolase activity / nuclear-transcribed mRNA catabolic process, nonsense-mediated decay ...translation termination factor activity / translation release factor complex / cytoplasmic translational termination / regulation of translational termination / translation release factor activity, codon specific / protein methylation / translation release factor activity / sequence-specific mRNA binding / peptidyl-tRNA hydrolase activity / nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / Protein hydroxylation / Peptide chain elongation / Selenocysteine synthesis / Formation of a pool of free 40S subunits / Eukaryotic Translation Termination / Response of EIF2AK4 (GCN2) to amino acid deficiency / SRP-dependent cotranslational protein targeting to membrane / Viral mRNA Translation / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / GTP hydrolysis and joining of the 60S ribosomal subunit / L13a-mediated translational silencing of Ceruloplasmin expression / Major pathway of rRNA processing in the nucleolus and cytosol / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / translational termination / rough endoplasmic reticulum / cytosolic ribosome / Regulation of expression of SLITs and ROBOs / ribosome binding / large ribosomal subunit rRNA binding / cytosolic large ribosomal subunit / cytoplasmic translation / postsynaptic density / nuclear body / structural constituent of ribosome / translation / ribonucleoprotein complex / focal adhesion / nucleolus / endoplasmic reticulum / RNA binding / extracellular exosome / nucleus / membrane / cytosol / cytoplasm 類似検索 - 分子機能
Peptide chain release factor eRF1/aRF1 / eRF1, domain 1 / eRF1 domain 2 / eRF1 domain 2 / eRF1 domain 1/Pelota-like / eRF1 domain 3 / eRF1, domain 2 superfamily / eRF1 domain 1 / eRF1 domain 3 / eRF1_1 ...Peptide chain release factor eRF1/aRF1 / eRF1, domain 1 / eRF1 domain 2 / eRF1 domain 2 / eRF1 domain 1/Pelota-like / eRF1 domain 3 / eRF1, domain 2 superfamily / eRF1 domain 1 / eRF1 domain 3 / eRF1_1 / 60S ribosomal protein L4, C-terminal domain / 60S ribosomal protein L4 C-terminal domain / Ribosomal protein L4/L1e, eukaryotic/archaeal, conserved site / Ribosomal protein L1e signature. / Ribosomal protein L22/L17, eukaryotic/archaeal / Ribosomal protein L4, eukaryotic and archaeal type / Ribosomal protein L11, conserved site / Ribosomal protein L11 signature. / Ribosomal protein L11, N-terminal / Ribosomal protein L11, N-terminal domain / Ribosomal protein L11/L12 / Ribosomal protein L11, C-terminal / Ribosomal protein L11, C-terminal domain superfamily / Ribosomal protein L11/L12, N-terminal domain superfamily / Ribosomal protein L11/L12 / Ribosomal protein L11, RNA binding domain / 50S ribosomal protein L30e-like / Ribosomal protein L22/L17, conserved site / Ribosomal protein L22 signature. / Ribosomal protein L22/L17 / Ribosomal protein L22p/L17e / Ribosomal protein L22/L17 superfamily / Ribosomal protein L4/L1e / Ribosomal protein L4 domain superfamily / Ribosomal protein L4/L1 family 類似検索 - ドメイン・相同性
Large ribosomal subunit protein uL22 / Large ribosomal subunit protein uL11 / Large ribosomal subunit protein uL4 / Eukaryotic peptide chain release factor subunit 1 類似検索 - 構成要素
ジャーナル: Nucleic Acids Res / 年: 2015 タイトル: Structure of a human translation termination complex. 著者: Sarah Matheisl / Otto Berninghausen / Thomas Becker / Roland Beckmann / 要旨: In contrast to bacteria that have two release factors, RF1 and RF2, eukaryotes only possess one unrelated release factor eRF1, which recognizes all three stop codons of the mRNA and hydrolyses the ...In contrast to bacteria that have two release factors, RF1 and RF2, eukaryotes only possess one unrelated release factor eRF1, which recognizes all three stop codons of the mRNA and hydrolyses the peptidyl-tRNA bond. While the molecular basis for bacterial termination has been elucidated, high-resolution structures of eukaryotic termination complexes have been lacking. Here we present a 3.8 Å structure of a human translation termination complex with eRF1 decoding a UAA(A) stop codon. The complex was formed using the human cytomegalovirus (hCMV) stalling peptide, which perturbs the peptidyltransferase center (PTC) to silence the hydrolysis activity of eRF1. Moreover, unlike sense codons or bacterial stop codons, the UAA stop codon adopts a U-turn-like conformation within a pocket formed by eRF1 and the ribosome. Inducing the U-turn conformation for stop codon recognition rationalizes how decoding by eRF1 includes monitoring geometry in order to discriminate against sense codons.
想定した対称性 - 点群: C1 (非対称) / 解像度のタイプ: BY AUTHOR / 解像度: 3.8 Å / 解像度の算出法: OTHER / ソフトウェア - 名称: Spider 詳細: Since images from microscopy were processed in the absence of spatial frequencies higher than 8 A, a FSC cut-off value of 0.143 was used for average resolution determination of 3.9 A (Scheres and Chen, 2012). 使用した粒子像数: 33165