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References Suggestions


Standard Name


Gene Synonym(s)

yfiA, ECK2594, b2597, JW2578, urf1, pY[1][2][3]

Product Desc.

stationary phase translation inhibitor and ribosome stability factor[3][2]

Protein Y, associated with 30S ribosomal subunit; inhibits 70S dimer formation; stabilizes the ribosomal 70S complex against dissociation at low magnesium ion concentrations; counteracts miscoding under stress conditions [4]

Product Synonyms(s)

cold shock protein associated with 30S ribosomal subunit[1], B2597[3][1], YfiA[3][1], Urf1[3][1], RaiA[3][1], pY[3][1] , ECK2594, JW2578, yfiA, b2597

Function from GO

<GO_nr />

Knock-Out Phenotype

Non-essential [5]


transcription unit(s): yfiA[3]

Quick Links

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RaiA is a ribosome-associated factor that is induced in stationary phase. hpf paralog has opposite effect on 70S dimers.[4]


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  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Riley, M. et al. (2006) Nucleic Acids Res 34:1-6 (corrected supplemental data from B. Wanner)
  2. 2.0 2.1 EcoCyc (release 11.1; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
  3. 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 EcoCyc (release 10.6; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
  4. 4.0 4.1 EcoGene: Rudd, KE (2000) EcoGene: a genome sequence database for Escherichia coli K-12. Nucleic Acids Res 28:60-4.
  5. Bubunenko, M et al. (2007) Essentiality of ribosomal and transcription antitermination proteins analyzed by systematic gene replacement in Escherichia coli. J. Bacteriol. 189 2844-53 PubMed