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ktrA [2017-07-07 13:05:55]
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ktrA [2017-07-07 13:05:55]

high affinity potassium transporter KtrA-KtrB, peripheric membrane component
Locus
BSU31090
Isoelectric point
5.98
Molecular weight
24.73 kDa
Protein length
222 aa Sequence Blast
Gene length
666 bp Sequence Blast
Function
potassium uptake
Product
high affinity potassium transporter KtrA-KtrB, peripheric membrane component
Essential
no
Synonyms
yuaA

Genomic Context

      
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Categories containing this gene/protein

Gene

Coordinates
3,188,414 → 3,189,082

Phenotypes of a mutant

  • a kimA ktrA ktrB mutant requires high potassium concentrations on minimal medium with ammonium as nitrogen source PubMed
  • a ktrA-ktrB mutant of B. subtilis NCIB3610 is reduced in sliding (dendritic spreading) PubMed
  • The protein

    Paralogous protein(s)

    Domains

  • contains a RCK_N domain at the N-terminus (according to UniProt)
  • contains a RCK_C domain at the C-terminus (according to UniProt)
  • Structure

  • 4J7C (the KtrA-KtrB complex) PubMed
  • 4XTT (the S. aureus KtrA RCK_C domain in complex with c-di-AMP, 48% identity) PubMed
  • 1LSU (complex with NADH)
  • 2HMW ( complex with ATP)
  • Localization

  • peripheral membrane protein PubMed
  • Expression and Regulation

    Operons

    Genes
    Description

    Regulatory mechanism

  • ydaO riboswitch: termination/antitermination, expression is switched off upon binding of c-di-AMP, in ydaO riboswitch
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    Biological materials

    Mutant

  • MGNA-B543 (yuaA::erm), available at the NBRP B. subtilis, Japan
  • 1A954 ( ktrA::kan), PubMed, available at BGSC
  • GHB1 (ΔktrA-ktrB::aphA3), available in Erhard Bremer's lab
  • GP92 (ΔktrA-ktrB::aphA3), available in Jörg Stülke's lab PubMed
  • GP2083 (ΔktrA-ktrB::aphA3 ΔktrC::tet), available in Jörg Stülke's lab PubMed
  • Expression vector

  • pGP2594: (IPTG inducible expression, purification in E. coli with N-terminal His-tag, in pWH844), available in Jörg Stülke's lab
  • LacZ fusion

  • GP2176 (based on pAC5), available in Jörg Stülke's lab
  • GP2177 (based on pAC7), available in Jörg Stülke's lab
  • Labs working on this gene/protein

  • Erhard Bremer, University of Marburg, Germany homepage
  • References

    Reviews

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    Original publications

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