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3.A.1.12.3
Choline porter

Accession Number:Q45462
Protein Name:OPBC OpuBC aka PROX
Length:306
Molecular Weight:34401.00
Species:Bacillus subtilis [1423]
Number of TMSs:1
Location1 / Topology2 / Orientation3: Cell membrane1 / Lipid-anchor2
Substrate choline

Cross database links:

RefSeq: NP_391251.1   
Entrez Gene ID: 938475   
Pfam: PF04069   
KEGG: bsu:BSU33710   

Gene Ontology

GO:0005886 C:plasma membrane
GO:0005488 F:binding
GO:0005215 F:transporter activity
GO:0006865 P:amino acid transport

References (3)

[1] “Characterization of a chimeric proU operon in a subtilin-producing mutant of Bacillus subtilis 168.”  Lin Y.et.al.   7592481
[2] “Two evolutionarily closely related ABC transporters mediate the uptake of choline for synthesis of the osmoprotectant glycine betaine in Bacillus subtilis.”  Kappes R.M.et.al.   10216873
[3] “The complete genome sequence of the Gram-positive bacterium Bacillus subtilis.”  Kunst F.et.al.   9384377
Structure:
3R6U   5NXY   6EYG   6EYH   6EYL   6EYQ     

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence 
1:	MKRKYLKLMI GLALAATLTL SGCSLPGLSA AADQTIKIGA QSMSESEIIA SMLGQLIEHH 
61:	TDLKTTTIKN LGSNAVQQQA LMNGEIDIAA TRYTGDALTG TLRMEPEKDP DKALALTQRE 
121:	FKKRYDLKWY DSYGFDNTYA FTVSKELADQ YHLETVSDVK KWAPQLKLGV DNYWMKLKGN 
181:	GYQDFTKTYG MTFGGTYPMQ IGLVYDAVKS GKMDIVLAYS TDGRIKSYGL KMLKDDKQFF 
241:	PPYDCSPVVP EKVLKEHPEL EGIIKKMLGK IDTATMQELN YEVDGNLKEP SVVAKEYLEK 
301:	HRYFES