Publications
2004
Mathy N, Pellegrini O, Serganov A, Patel D J, Ehresmann C, Portier C
Specific recognition of rpsO mRNA and 16S rRNA by Escherichia coli ribosomal protein S15 relies on both mimicry and site differentiation Journal Article
In: Mol Microbiol, vol. 52, no. 3, pp. 661-675, 2004, ISBN: 15101974, (0950-382x Journal Article).
Abstract | Links | BibTeX | Tags: 16S/chemistry/genetics/*metabolism Recombinant Fusion Proteins/metabolism Ribosomal Proteins/chemistry/*genetics/*metabolism Sequence Alignment Support, Bacterial Models, EHRESMANN Amino Acid Sequence Base Sequence Escherichia coli Proteins/chemistry/genetics/*metabolism Gene Expression Regulation, Messenger/metabolism RNA, Molecular *Molecular Mimicry Molecular Sequence Data Mutagenesis, Non-U.S. Gov't Support, P.H.S., Ribosomal, Secondary RNA, Site-Directed Nucleic Acid Conformation Protein Structure, U.S. Gov't, Unité ARN
@article{,
title = {Specific recognition of rpsO mRNA and 16S rRNA by Escherichia coli ribosomal protein S15 relies on both mimicry and site differentiation},
author = {N Mathy and O Pellegrini and A Serganov and D J Patel and C Ehresmann and C Portier},
url = {http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=15101974},
isbn = {15101974},
year = {2004},
date = {2004-01-01},
journal = {Mol Microbiol},
volume = {52},
number = {3},
pages = {661-675},
abstract = {The ribosomal protein S15 binds to 16S rRNA, during ribosome assembly, and to its own mRNA (rpsO mRNA), affecting autocontrol of its expression. In both cases, the RNA binding site is bipartite with a common subsite consisting of a G*U/G-C motif. The second subsite is located in a three-way junction in 16S rRNA and in the distal part of a stem forming a pseudoknot in Escherichia coli rpsO mRNA. To determine the extent of mimicry between these two RNA targets, we determined which amino acids interact with rpsO mRNA. A plasmid carrying rpsO (the S15 gene) was mutagenized and introduced into a strain lacking S15 and harbouring an rpsO-lacZ translational fusion. Analysis of deregulated mutants shows that each subsite of rpsO mRNA is recognized by a set of amino acids known to interact with 16S rRNA. In addition to the G*U/G-C motif, which is recognized by the same amino acids in both targets, the other subsite interacts with amino acids also involved in contacts with helix H22 of 16S rRNA, in the region adjacent to the three-way junction. However, specific S15-rpsO mRNA interactions can also be found, probably with A(-46) in loop L1 of the pseudoknot, demonstrating that mimicry between the two targets is limited.},
note = {0950-382x
Journal Article},
keywords = {16S/chemistry/genetics/*metabolism Recombinant Fusion Proteins/metabolism Ribosomal Proteins/chemistry/*genetics/*metabolism Sequence Alignment Support, Bacterial Models, EHRESMANN Amino Acid Sequence Base Sequence Escherichia coli Proteins/chemistry/genetics/*metabolism Gene Expression Regulation, Messenger/metabolism RNA, Molecular *Molecular Mimicry Molecular Sequence Data Mutagenesis, Non-U.S. Gov't Support, P.H.S., Ribosomal, Secondary RNA, Site-Directed Nucleic Acid Conformation Protein Structure, U.S. Gov't, Unité ARN},
pubstate = {published},
tppubtype = {article}
}