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3.A.1.11.9
Putative polyamine (spermidine/putrescine) uptake porter, YdcSTUV (Moussatova et al. 2008). May also be involved in the uptake of double stranded DNA (Sun 2018).

Accession Number:P77156
Protein Name:Inner membrane ABC transporter permease protein YdcU
Length:313
Molecular Weight:34360.00
Species:Escherichia coli (strain K12) [83333]
Number of TMSs:6
Location1 / Topology2 / Orientation3: Cell inner membrane1 / Multi-pass membrane protein2
Substrate spermidine, putrescine, double-stranded DNA

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MAMNVLQSPS RPGLGKVSGF FWHNPGLGLF LLLLGPLMWF GIVYFGSLLT LLWQGFYTFD 
61:	DFTMSVTPEL TLANIRALFN PANYDIILRT LTMAVAVTIA SAILAFPMAW YMARYTSGKM 
121:	KAFFYIAVML PMWASYIVKA YAWTLLLAKD GVAQWFLQHL GLEPLLTAFL TLPAVGGNTL 
181:	STSGLGRFLV FLYIWLPFMI LPVQAALERL PPSLLQASAD LGARPRQTFR YVVLPLAIPG 
241:	IAAGSIFTFS LTLGDFIVPQ LVGPPGYFIG NMVYSQQGAI GNMPMAAAFT LVPIILIALY 
301:	LAFVKRLGAF DAL