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Standard Name


Gene Synonym(s)

ECK3971, b3980, JW3943, kirT, pulT[1], pulT

Product Desc.

elongation factor Tu[2][3]

EF-Tu, Elongation Factor-Translation, unstable; GTP-dependent binding of aa-tRNA to the A-site of ribosomes; has intrinsic GTPase activity when bound to kirromycin[4]

Product Synonyms(s)

B3980[2], PulT[2], KirT[2], TufB[2], EF-Tu[2] , ECK3971, JW3943, kirT, pulT, b3980

Function from GO
Knock-Out Phenotype

transcription unit(s): tufB[2], thrU-tyrU-glyT-thrT[2], thrU

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tufB encodes an essential function, with duplicate gene tufA, such that tufA or tufB can be deleted, but the double mutant is inviable.[4]


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  1. Riley, M. et al. (2006) Nucleic Acids Res 34:1-6 (corrected supplemental data from B. Wanner)
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 EcoCyc (release 10.6; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
  3. EcoCyc (release 11.1; 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.