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3.A.1.134.3
The putative bacitracin exporter, BceAB (BarAB; YtsCD) (Bernard et al., 2003; Ohki et al., 2003).  Functions in both signaling to the two component system, BceRS, and in export of the antimicrobial peptide (Dintner et al. 2014).  BceB interacts directly with BceS, and BceB binds bacitracin (Dintner et al. 2014).  Specific regions and residues are invollved in signalling or transport (Kallenberg et al. 2013).  More recent studies suggest taht BceAB may cause bacitracin resistance by transferring undecaprenyl pyrophosphate from the exteral to the internal leaflet of the inner membrane where it can't bind bacitracin and other lantibiotics that use Lipid II as a receptor (Draper et al. 2015).

Accession Number:O34697
Protein Name:BceA aka YtsC
Length:253
Molecular Weight:28234.00
Species:Bacillus subtilis [1423]
Location1 / Topology2 / Orientation3: Cell membrane1 / Multi-pass membrane protein2
Substrate Bacitracin

Cross database links:

HEGENOM: HBG758042
RefSeq: NP_390916.1   
Entrez Gene ID: 937246   
Pfam: PF00005   
BioCyc: SUBTI:BSU30380-MONOMER   
KEGG: bsu:BSU30380   

Gene Ontology

GO:0005524 F:ATP binding
GO:0016887 F:ATPase activity
GO:0046677 P:response to antibiotic
GO:0006810 P:transport

References (5)

[1] “Sequencing and functional annotation of the Bacillus subtilis genes in the 200 kb rrnB-dnaB region.”  Lapidus A.et.al.   9387221
[2] “The complete genome sequence of the Gram-positive bacterium Bacillus subtilis.”  Kunst F.et.al.   9384377
[3] “YtsCD and YwoA, two independent systems that confer bacitracin resistance to Bacillus subtilis.”  Bernard R.et.al.   14612242
[4] “The BceRS two-component regulatory system induces expression of the bacitracin transporter, BceAB, in Bacillus subtilis.”  Ohki R.et.al.   12890034
[5] “Cell wall stress responses in Bacillus subtilis: the regulatory network of the bacitracin stimulon.”  Mascher T.et.al.   14651641

External Searches:

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MVILEANKIR KSYGNKLNKQ EVLKGIDIHI EKGEFVSIMG ASGSGKTTLL NVLSSIDQVS 
61:	HGTIHINGND MTAMKEKQLA EFRKQHLGFI FQDYNLLDTL TVKENILLPL SITKLSKKEA 
121:	NRKFEEVAKE LGIYELRDKY PNEISGGQKQ RTSAGRAFIH DPSIIFADEP TGALDSKSAS 
181:	DLLNKLSQLN QKRNATIIMV THDPVAASYC GRVIFIKDGQ MYTQLNKGGQ DRQTFFQDIM 
241:	KTQGVLGGVQ HEH