Resonance assignment of the ribosome binding domain of E. coli ribosomal protein S1

Ribosomal protein S1 is an essential actor for protein synthesis in Escherichia coli . It is involved in mRNA recruitment by the 30S ribosomal subunit and recognition of the correct start codon during translation initiation. E. coli S1 is a modular protein that contains six repeats of an S1 motif, w...

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Veröffentlicht in:Biomolecular NMR assignments 2015-04, Vol.9 (1), p.107-111
Hauptverfasser: Giraud, Pierre, Créchet, Jean-Bernard, Uzan, Marc, Bontems, François, Sizun, Christina
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container_end_page 111
container_issue 1
container_start_page 107
container_title Biomolecular NMR assignments
container_volume 9
creator Giraud, Pierre
Créchet, Jean-Bernard
Uzan, Marc
Bontems, François
Sizun, Christina
description Ribosomal protein S1 is an essential actor for protein synthesis in Escherichia coli . It is involved in mRNA recruitment by the 30S ribosomal subunit and recognition of the correct start codon during translation initiation. E. coli S1 is a modular protein that contains six repeats of an S1 motif, which have distinct functions despite structural homology. Whereas the three central repeats have been shown to be involved in mRNA recognition, the two first repeats that constitute the N-terminal domain of S1 are responsible for binding to the 30S subunit. Here we report the almost complete 1 H, 13 C and 15 N resonance assignment of two fragments of the 30S binding region of S1. The first fragment comprises only the first repeat. The second corresponds to the entire ribosome binding domain. Since S1 is absent from all high resolution X-ray structures of prokaryotic ribosomes, these data provide a first step towards atomic level structural characterization of this domain by NMR. Chemical shift analysis of the first repeat provides evidence for structural divergence from the canonical OB-fold of an S1 motif. In contrast the second domain displays the expected topology for an S1 motif, which rationalizes the functional specialization of the two subdomains.
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subjects Amino Acid Motifs
Amino Acid Sequence
Binding sites
Biochemistry
Biological and Medical Physics
Biophysics
Chemical Sciences
E coli
Escherichia coli
Escherichia coli Proteins - chemistry
Escherichia coli Proteins - metabolism
Molecular Sequence Data
NMR
Nuclear magnetic resonance
Nuclear Magnetic Resonance, Biomolecular
Physics
Physics and Astronomy
Polymer Sciences
Protein Structure, Tertiary
Proteins
Ribosomal Proteins - chemistry
Ribosomal Proteins - metabolism
title Resonance assignment of the ribosome binding domain of E. coli ribosomal protein S1
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