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3.A.1.11.2
Putrescine porter (Igarashi and Kashiwagi 1996).

Accession Number:P0AFL1
Protein Name:PotI aka B0857
Length:281
Molecular Weight:30541.00
Species:Escherichia coli [83333]
Number of TMSs:6
Location1 / Topology2 / Orientation3: Cell inner membrane1 / Multi-pass membrane protein2
Substrate putrescine

Cross database links:

RefSeq: AP_001488.1    NP_415378.1   
Entrez Gene ID: 945485   
Pfam: PF00528   
BioCyc: EcoCyc:POTI-MONOMER    ECOL168927:B0857-MONOMER   
KEGG: ecj:JW0841    eco:b0857   

Gene Ontology

GO:0016021 C:integral to membrane
GO:0005886 C:plasma membrane
GO:0015594 F:putrescine-importing ATPase activity
GO:0015847 P:putrescine transport

References (5)

[1] “Characteristics of the operon for a putrescine transport system that maps at 19 minutes on the Escherichia coli chromosome.”  Pistocchi R.et.al.   8416922
[2] “A 718-kb DNA sequence of the Escherichia coli K-12 genome corresponding to the 12.7-28.0 min region on the linkage map.”  Oshima T.et.al.   8905232
[3] “The complete genome sequence of Escherichia coli K-12.”  Blattner F.R.et.al.   9278503
[4] “Highly accurate genome sequences of Escherichia coli K-12 strains MG1655 and W3110.”  Hayashi K.et.al.   16738553
[5] “Global topology analysis of the Escherichia coli inner membrane proteome.”  Daley D.O.et.al.   15919996

External Searches:

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence 
1:	MNNLPVVRSP WRIVILLLGF TFLYAPMLML VIYSFNSSKL VTVWAGWSTR WYGELLRDDA 
61:	MMSAVGLSLT IAACAATAAA ILGTIAAVVL VRFGRFRGSN GFAFMITAPL VMPDVITGLS 
121:	LLLLFVALAH AIGWPADRGM LTIWLAHVTF CTAYVAVVIS SRLRELDRSI EEAAMDLGAT 
181:	PLKVFFVITL PMIMPAIISG WLLAFTLSLD DLVIASFVSG PGATTLPMLV FSSVRMGVNP 
241:	EINALATLIL GAVGIVGFIA WYLMARAEKQ RIRDIQRARR G