2017-07-07 10:44:352025-05-10 17:13:59
description
high affinity potassium transporter [[protein|KtrA]]-[[protein|KtrB]], integral membrane subunit
high affinity potassium channel [[protein|KtrA]]-[[protein|KtrB]], integral membrane subunit
locus
BSU31100
BSU_31100
geneLength
1335
1338
product
high affinity potassium transporter [[protein|KtrA]]-[[protein|KtrB]], integral membrane subunit
high affinity potassium channel [[protein|KtrA]]-[[protein|KtrB]], integral membrane subunit
outlinks
bsu
BSU31100
BSU_31100
Gene
Coordinates
3,189,089 → 3,190,426
3,189,089 3,190,426
The protein
Paralogous protein(s)
[[protein|KtrD]]
[[this]]
Biological materials
Mutant
MGNA-A227 (yubG::erm), available at the [https://shigen.nig.ac.jp/bsub/resource/strainGeneDisrupted/detail/227 NBRP B. subtilis, Japan]
1A954 ( ''ktrB''::''kan''), [Pubmed|12562800], available at [http://pasture.asc.ohio-state.edu/BGSC/getdetail.cfm?bgscid=1A954&Search=1A954 BGSC]
GHB1 (D(''[[gene|ktrA]]-[[gene|ktrB]]'')::''aphA3''), available in [SW|Erhard Bremer]'s lab
GP92 (D(''[[gene|ktrA]]-[[gene|ktrB]]'')::''aphA3''), available in [SW|Jörg Stülke]'s lab
MGNA-A227 (yubG::erm), available at the [https://shigen.nig.ac.jp/bsub/resource/strainGeneDisrupted/detail/227 NBRP B. subtilis, Japan]
1A954 ( ''ktrB''::''kan''), [Pubmed|12562800], available at [http://pasture.asc.ohio-state.edu/BGSC/getdetail.cfm?bgscid=1A954&Search=1A954 BGSC]
GHB1 ([[gene|ktrA]]-[[gene|ktrB]]::''aphA3''), available in [SW|Erhard Bremer]'s lab
GP92 ([[gene|ktrA]]-[[gene|ktrB]]::''aphA3''), available in [SW|Jörg Stülke]'s lab [pubmed|28420751]
GP2083 ([[gene|ktrA]]-[[gene|ktrB]]::''aphA3'' [[gene|ktrC]]::''tet''), available in [SW|Jörg Stülke]'s lab [pubmed|28420751]
GP2498 ([[gene|ktrA]]-[[gene|ktrB]]::''spc'' [[gene|kimA]]::''cat''), available in [SW|Jörg Stülke]'s lab
BKE31100 ([[gene|ktrB]]::erm trpC2) available at [http://www.bgsc.org/getdetail.php?bgscid=BKE31100 BGSC], [Pubmed|28189581], upstream reverse: _UP1_CACCTTTGTCTACATCCCTT, downstream forward: _UP4_TGATATCAAAAAAATCCGGC
BKK31100 ([[gene|ktrB]]::kan trpC2) available at [http://www.bgsc.org/getdetail.php?bgscid=BKK31100 BGSC], [Pubmed|28189581], upstream reverse: _UP1_CACCTTTGTCTACATCCCTT, downstream forward: _UP4_TGATATCAAAAAAATCCGGC
GP2716 ([[gene|ktrA]]-[[gene|ktrB]]::''spc''), available in [SW|Jörg Stülke]'s lab
GP3064 ([[gene|ktrB]]::''kan''), available in [SW|Jörg Stülke]'s lab
Labs working on this gene/protein
[SW|Erhard Bremer], University of Marburg, Germany [http://www.uni-marburg.de/fb17/fachgebiete/mikrobio/molmibi homepage]
References
Reviews
References
Original publications
The protein
Catalyzed reaction/ biological activity
uptake of potassium
The protein
Protein family
TrkH potassium transport family (with [[protein|KtrD]], according to UniProt)
The protein
Kinetic information
the [[protein|KtrA]]-[[protein|KtrB]] channel has a high affinity for potassium,this is determined by [[protein|KtrB]] [pubmed|30753894]
Expression and Regulation
additional information
growth at extreme potassium limitation results in the acquisition of promoter mutations with increased [[gene|ktrA]]-[[gene|ktrB]] expression [pubmed|28679749]
Biological materials
Expression vector
pGP2992: (IPTG inducible expression, purification in ''E. coli'' with N-terminal His-tag, in [SW|pWH844]), available in [SW|Jörg Stülke]'s lab
Biological materials
FLAG-tag construct
GP2277 (based on [SW|pGP1331]), available in [SW|Jörg Stülke]'s lab [pubmed|28679749]
labs
[SW|Erhard Bremer], University of Marburg, Germany [http://www.uni-marburg.de/fb17/fachgebiete/mikrobio/molmibi Homepage]
[SW|Inga Hänelt], Frankfurt, Germany [https://www.biochem.uni-frankfurt.de/index.php?id=298 Homepage]
[SW|João H Morais-Cabral], University of Porto, Portugal [https://www.i3s.up.pt/research-group?x=47 Homepage]
[SW|Jörg Stülke], University of Göttingen, Germany [http://genmibio.uni-goettingen.de Homepage]