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2.A.1.2.52
Puromycin resistance MDR protein, MdtM (Soo et al., 2011).  Also catalyzes bile salt:H+ antiport, and binds cholate and deoxycholate to the protein with micromolar affinity. Functions as an MDR pump (Nishino and Yamaguchi 2001). Acts synergistically with AcrAB-TolC (Paul et al. 2014). The ortholog has been characterized in Salmonella enterica serovar Typhi, and specific residues have been shown to be important for transport and stability (Shaheen et al. 2021).

Accession Number:P39386
Protein Name:Multidrug resistance protein MdtM
Length:410
Molecular Weight:44688.00
Species:Escherichia coli (strain K12) [83333]
Number of TMSs:12
Location1 / Topology2 / Orientation3: Cell inner membrane1 / Multi-pass membrane protein2
Substrate puromycin, bile acid

Cross database links:

DIP: DIP-12641N
Entrez Gene ID: 948861   
Pfam: PF07690   
KEGG: ecj:JW4300    eco:b4337   

Gene Ontology

GO:0016021 C:integral to membrane
GO:0005886 C:plasma membrane
GO:0005215 F:transporter activity
GO:0046677 P:response to antibiotic
GO:0055085 P:transmembrane transport

References (5)

[1] “Analysis of the Escherichia coli genome VI: DNA sequence of the region from 92.8 through 100 minutes.”  Burland V.D.et.al.   7610040
[2] “The complete genome sequence of Escherichia coli K-12.”  Blattner F.R.et.al.   9278503
[3] “Highly accurate genome sequences of Escherichia coli K-12 strains MG1655 and W3110.”  Hayashi K.et.al.   16738553
[4] “Analysis of a complete library of putative drug transporter genes in Escherichia coli.”  Nishino K.et.al.   11566977
[5] “Global topology analysis of the Escherichia coli inner membrane proteome.”  Daley D.O.et.al.   15919996

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence 
1:	MPRFFTRHAA TLFFPMALIL YDFAAYLSTD LIQPGIINVV RDFNADVSLA PAAVSLYLAG 
61:	GMALQWLLGP LSDRIGRRPV LITGALIFTL ACAATMFTTS MTQFLIARAI QGTSICFIAT 
121:	VGYVTVQEAF GQTKGIKLMA IITSIVLIAP IIGPLSGAAL MHFMHWKVLF AIIAVMGFIS 
181:	FVGLLLAMPE TVKRGAVPFS AKSVLRDFRN VFCNRLFLFG AATISLSYIP MMSWVAVSPV 
241:	ILIDAGSLTT SQFAWTQVPV FGAVIVANAI VARFVKDPTE PRFIWRAVPI QLVGLSLLIV 
301:	GNLLSPHVWL WSVLGTSLYA FGIGLIFPTL FRFTLFSNKL PKGTVSASLN MVILMVMSVS 
361:	VEIGRWLWFN GGRLPFHLLA VVAGVIVVFT LAGLLNRVRQ HQAAELVEEQ