Results 31 to 40 of about 33,711 (238)

Substrate Specificity of Escherichia coli Peptidyl‐Transferase [PDF]

open access: bronzeEuropean Journal of Biochemistry, 1970
The kinetics of the puromycin interaction with different ribosomal bound peptidyl‐tRNAs were studied. The rates of the puromycin reaction with AA‐Phe‐tRNA and AA2‐Phe‐tRNA using three different amino acids (AA) were compared. At 4° all the three dipeptidyl‐tRNAsPhe reacted considerably slower than the three tripeptidyl‐tRNAsPhe. Acetyl‐Phe‐tRNA reacted
Amos Panet, Nathan de Groot, Y. Lapidot
openalex   +4 more sources

Hydrolysis of fMet-tRNA by Peptidyl Transferase [PDF]

open access: greenProceedings of the National Academy of Sciences, 1971
Escherichia coli and rabbit reticulocyte (f[ 3 H]Met-tRNA·AUG·ribosome) intermediates undergo hydrolysis, with release of f[ 3 H]methionine, upon addition of tRNA or CpCpA in the presence of acetone.
C. Thomas Caskey   +3 more
openalex   +4 more sources

A simple geometrical model of the electrostatic environment around the catalytic center of the ribosome and its significance for the elongation cycle kinetics

open access: yesComputational and Structural Biotechnology Journal, 2023
The central function of the large subunit of the ribosome is to catalyze peptide bond formation. This biochemical reaction is conducted at the peptidyl transferase center (PTC).
Marc Joiret   +4 more
doaj   +1 more source

Mapping of Complete Set of Ribose and Base Modifications of Yeast rRNA by RP-HPLC and Mung Bean Nuclease Assay. [PDF]

open access: yesPLoS ONE, 2016
Ribosomes are large ribonucleoprotein complexes that are fundamental for protein synthesis. Ribosomes are ribozymes because their catalytic functions such as peptidyl transferase and peptidyl-tRNA hydrolysis depend on the rRNA.
Jun Yang   +5 more
doaj   +1 more source

Modulating the activity of the peptidyl transferase center of the ribosome. [PDF]

open access: yesRNA, 2008
The peptidyl transferase (PT) center of the ribosome catalyzes two nucleophilic reactions, peptide bond formation between aminoacylated tRNA substrates and, together with release factor, peptide release. Structure and function of the PT center are modulated by binding of aminoacyl-tRNA or release factor, thus providing the basis for the specificity of ...
Beringer M.
europepmc   +4 more sources

Atomic mutagenesis of stop codon nucleotides reveals the chemical prerequisites for release factor-mediated peptide release. [PDF]

open access: yes, 2018
Termination of protein synthesis is triggered by the recognition of a stop codon at the ribosomal A site and is mediated by class I release factors (RFs).
Clementi, Nina   +11 more
core   +3 more sources

Ribosomal history reveals origins of modern protein synthesis. [PDF]

open access: yesPLoS ONE, 2012
The origin and evolution of the ribosome is central to our understanding of the cellular world. Most hypotheses posit that the ribosome originated in the peptidyl transferase center of the large ribosomal subunit.
Ajith Harish, Gustavo Caetano-Anollés
doaj   +1 more source

Visualizing formation of the active site in the mitochondrial ribosome

open access: yeseLife, 2021
Ribosome assembly is an essential and conserved process that is regulated at each step by specific factors. Using cryo-electron microscopy (cryo-EM), we visualize the formation of the conserved peptidyl transferase center (PTC) of the human mitochondrial
Viswanathan Chandrasekaran   +6 more
doaj   +1 more source

Extensive ribosome and RF2 rearrangements during translation termination

open access: yeseLife, 2019
Protein synthesis ends when a ribosome reaches an mRNA stop codon. Release factors (RFs) decode the stop codon, hydrolyze peptidyl-tRNA to release the nascent protein, and then dissociate to allow ribosome recycling.
Egor Svidritskiy   +4 more
doaj   +1 more source

Liver transplantation for type IV glycogen storage disease [PDF]

open access: yes, 1991
TYPE IV glycogen storage disease is a rare autosomal recessive disorder (also called Andersen's disease1 or amylopectinosis) in which the activity of branching enzyme alpha-1, 4-glucan: alpha-1, 4-glucan 6-glucosyltransferase is deficient in the liver as
Andreas Tzakis   +17 more
core   +1 more source

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