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ktrB
high affinity potassium channel
KtrA-
KtrB, integral membrane subunit
Molecular weight
48.27 kDa
Product
high affinity potassium channel
KtrA-
KtrB, integral membrane subunit
Genomic Context
Categories containing this gene/protein
Gene
Coordinates
3,189,089 3,190,426
Phenotypes of a mutant
a kimA ktrA ktrB mutant requires high potassium concentrations on minimal medium with ammonium as nitrogen source PubMed The protein
Catalyzed reaction/ biological activity
uptake of potassiumProtein family
TrkH potassium transport family (with KtrD, according to UniProt) Paralogous protein(s)
Kinetic information
Structure
Localization
integral membrane protein PubMed Expression and Regulation
Operons
Additional information
growth at extreme potassium limitation results in the acquisition of promoter mutations with increased ktrA-ktrB expression PubMed Biological materials
Mutant
MGNA-A227 (yubG::erm), available at the NBRP B. subtilis, Japan1A954 ( ktrB::kan), PubMed, available at BGSCGHB1 (ktrA-ktrB::aphA3), available in Erhard Bremer's labGP92 (ktrA-ktrB::aphA3), available in Jörg Stülke's lab PubMedGP2083 (ktrA-ktrB::aphA3 ktrC::tet), available in Jörg Stülke's lab PubMedGP2498 (ktrA-ktrB::spc kimA::cat), available in Jörg Stülke's labBKE31100 (ktrB::erm trpC2) available at BGSC, PubMed, upstream reverse: _UP1_CACCTTTGTCTACATCCCTT, downstream forward: _UP4_TGATATCAAAAAAATCCGGCBKK31100 (ktrB::kan trpC2) available at BGSC, PubMed, upstream reverse: _UP1_CACCTTTGTCTACATCCCTT, downstream forward: _UP4_TGATATCAAAAAAATCCGGCGP2716 (ktrA-ktrB::spc), available in Jörg Stülke's labGP3064 (ktrB::kan), available in Jörg Stülke's lab Expression vector
pGP2992: (IPTG inducible expression, purification in E. coli with N-terminal His-tag, in pWH844), available in Jörg Stülke's lab FLAG-tag construct
Labs working on this gene/protein
References
Reviews
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Original publications
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