trkG:Quickview

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Standard Name

trkG

Gene Synonym(s)

ECK1362, b1363, JW1358[1], JW1358

Product Desc.

TrkG potassium ion Trk Transporter[2][3]

Major constitutive K+ uptake permease TrkAG; high-rate, low-affinity transport; K+-translocating subunit; binds TrkA to inner membrane; Rac prophage[4]

Product Synonyms(s)

Rac prophage; potassium transporter subunit[1], B1363[2][1], TrkG[2][1] , ECK1362, JW1358, b1363

Function from GO

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Knock-Out Phenotype
Regulation/Expression

transcription unit(s): trkG[2]

Regulation/Activity
Quick Links

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Notes

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Although normally required for Trk activity, overproduction of TrkG or TrkH alone increases K+ transport in a trkA mutant strain (Buurman, 2004). SapD(TrkE) is required for TrkAH activity and stimulates TrkAG transport rate (Bossemeyer, 1989; Dosch, 1991; Harms, 2001). TrkAG may be inactive during anaerobic growth (Trchounian, 1994). Trk-mediated transport is driven by proton motive force, but requires a high ATP concentration for maximal activity, presumably because ATP-binding is needed to activate SapD (Harms, 2001).[4]



References

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  1. 1.0 1.1 1.2 1.3 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 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.