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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:P45766
Protein Name:Putative amino-acid ABC transporter-binding protein YhdW
Length:341
Molecular Weight:37021.00
Species:Escherichia coli (strain K12) [83333]
Number of TMSs:1
Location1 / Topology2 / Orientation3: Periplasm1
Substrate serine, asparagine, L-threonine, glutamine, histidine, tyrosine

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FASTA formatted sequence
1:	MKKMMIATLA AASVLLAVAN QAXAGATLDA VQKKGFVQCG ISDGLPGFSY ADADGKFSGI 
61:	DVDICRGVAA AVFGDDTKVK YTPLTAKERF TALQSGEVDL LSRNTTWTSS RDAGMGMAFT 
121:	GVTYYDGIGF LTHDKAGLKS AKELDGATVC IQAGTDTELN VADYFKANNM KYTPVTFDRS 
181:	DESAKALESG RCDTLASDQS QLYALRIKLS NPAEWIVLPE VISKEPLGPV VRRGDDEWFS 
241:	IVRWTLFAML NAEEMGINSQ NVDEKAANPA TPDMAHLLGK EGDYGKDLKL DNKWAYNIIK 
301:	QVGNYSEIFE RNVGSESPLK IKRGQNNLWN NGGIQYAPPV R