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btr

Gene
btr
Protein
HTH-type transcriptional activator Btr
Organism
Bacillus subtilis (strain 168)
Length
529 amino acids
Function
In iron-limited conditions, activates expression of the feuABCybbA operon, which encodes the bacillibactin uptake system. Acts by binding directly to a conserved direct repeat element upstream of the feuA promoter. Activity is increased in the presence of bacillibactin.
Mass
60.763 kDa
Sequence
MQNAVIYQPVQIEYLKKTSDLFSEQQLADSFVLIFHLKGNGYISIGTNTNPLQKKTLYVCPPNETFGFTPAADGHIDACIIRLLSYIKETGQDIFTPCTESELAKLKLMNVSHIENLAVRLQELAALWNESSQLSQLKCVIEVQSLIYDLFTASLSDQTDTHSAIEKTKHYIETHADTKITLAQLSQMAGISAKHYSESFKKWTGQSVTEFITKTRITKAKRLMAKSNCKLKEIAHQTGYQDEFYFSRIFKKYTGCSPTSYMKKRRKKIAAYGRGTMGHLIPLHHIPFAAALHPKWTSYYYQHYSTDIPVQLSAYRFNEKWEENLYTLSQAEPDVIVSMDSISPEEQDRLNRIAEVMYLPSEESWRTHFLQTASFLKEESEAEKWLADYDQQTTAAKKTLQHVQGLRFLFLRLHKQNFYLAHNRSVREVFFGDLGFSSATTADTPSEQAISLENIANYQADCMMLFLFKEPETIAYYQQLQQTEAWQNLSAVRDNRVYLLSLDPWNEYSACGHERIVQQTVSLLSGDCP

Gene
btr
Protein
Transcriptional regulatory protein btr
Organism
Bordetella pertussis (strain Tohama I / ATCC BAA-589 / NCTC 13251)
Length
242 amino acids
Function
May regulate gene expression in response to changes in oxygen levels or to changes in the redox potential of the bacterial environment.
Mass
27.13 kDa
Sequence
MQRRVPLSPDAAHCSSCMLGHVCVPVGMPANEVEKLDELVKERVRVERGKTLYELDDPLDAVYGVRFGSLKTQLEDSSGQLQITGFHLPGEIVGLDGMIESKHVSSAVALEDSEVCVIRLPEIDRVSTQLPSLQQQFRRLMSREITRSHQMLATVGAMRSEQRLAAFLLNLSQRYAALGYSSTEFVLRMSREEIGNYLGLTLETVSRLFSRFGREGLIRINQREVRLIDLPGLKQLIGQESC