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3.A.1.3.26
The putative polar amino acid uptake porter, YhdWXYZ.  Probably under NtrBC transcriptional control (Jiang et al. 2006).

Accession Number:P45767
Protein Name:Putative amino-acid ABC transporter permease protein YhdX
Length:393
Molecular Weight:43261.00
Species:Escherichia coli (strain K12) [83333]
Number of TMSs:8
Location1 / Topology2 / Orientation3: Cell inner membrane1 / Multi-pass membrane protein2
Substrate serine, asparagine, L-threonine, glutamine, histidine, tyrosine

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MSHRRSTVKG SLSFANPTVR AWLFQILAVV AVVGIVGWLF HNTVTNLNNR GITSGFAFLD 
61:	RGAGFGIVQH LIDYQQGDTY GRVFIVGLLN TLLVSALCIV FASVLGFFIG LARLSDNWLL 
121:	RKLSTIYIEI FRNIPPLLQI FFWYFAVLRN LPGPRQAVSA FDLAFLSNRG LYIPSPQLGD 
181:	GFIAFILAVV MAIVLSVGLF RFNKTYQIKT GQLRRTWPIA AVLIIGLPLL AQWLFGAALH 
241:	WDVPALRGFN FRGGMVLIPE LAALTLALSV YTSAFIAEII RAGIQAVPYG QHEAARSLGL 
301:	PNPVTLRQVI IPQALRVIIP PLTSQYLNIV KNSSLAAAIG YPDMVSLFAG TVLNQTGQAI 
361:	ETIAMTMSVY LIISLTISLL MNIYNRRIAI VER