PMID:2045359

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Citation

Toone, WM, Rudd, KE and Friesen, JD (1991) deaD, a new Escherichia coli gene encoding a presumed ATP-dependent RNA helicase, can suppress a mutation in rpsB, the gene encoding ribosomal protein S2. J. Bacteriol. 173:3291-302

Abstract

We have cloned and sequenced a new gene from Escherichia coli which encodes a 64-kDa protein. The inferred amino acid sequence of the protein shows remarkable similarity to eIF4A, a murine translation initiation factor that has an ATP-dependent RNA helicase activity and is a founding member of the D-E-A-D family of proteins (characterized by a conserved Asp-Glu-Ala-Asp motif). Our new gene, called deaD, was cloned as a gene dosage-dependent suppressor of temperature-sensitive mutations in rpsB, the gene encoding ribosomal protein S2. We suggest that the DeaD protein plays a hitherto unknown role in translation in E. coli.

Links

PubMed PMC207940

Keywords

Amino Acid Sequence; Base Sequence; Chromosome Mapping; Cloning, Molecular; Escherichia coli/genetics; Genes, Bacterial; Molecular Sequence Data; Mutation; RNA Helicases; RNA Nucleotidyltransferases/genetics; Ribosomal Proteins/genetics; Sequence Homology, Nucleic Acid; Transcription, Genetic

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