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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:P45769
Protein Name:Uncharacterized amino-acid ABC transporter ATP-binding protein YhdZ
Length:252
Molecular Weight:28574.00
Species:Escherichia coli (strain K12) [83333]
Location1 / Topology2 / Orientation3: Cell inner membrane1 / Peripheral membrane protein2
Substrate serine, asparagine, L-threonine, glutamine, histidine, tyrosine

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FASTA formatted sequence
1:	MSQILLQPAN AMITLENVNK WYGQFHVLKN INLTVQPGER IVLCGPSGSG KSTTIRCINH 
61:	LEEHQQGRIV VDGIELNEDI RNIERVRQEV GMVFQHFNLF PHLTVLQNCT LAPIWVRKMP 
121:	KKEAEDLAVH YLERVRIAEH AHKFPGQISG GQQQRVAIAR SLCMKPKIML FDEPTSALDP 
181:	EMVKEVLDTM IGLAQSGMTM LCVTHEMGFA RTVADRVIFM DRGEIVEQAA PDEFFAHPKS 
241:	ERTRAFLSQV IH