Identification
Name:Maltose transport system permease protein malG
Synonyms:Not Available
Gene Name:malG
Enzyme Class:Not Available
Biological Properties
General Function:Involved in transporter activity
Specific Function:Part of the binding-protein-dependent transport system for maltose; probably responsible for the translocation of the substrate across the membrane
Cellular Location:Cell inner membrane; Multi-pass membrane protein
SMPDB Pathways:
KEGG Pathways:
Transports:
Transport References:
  • Uniprot Consortium (2012). "Reorganizing the protein space at the Universal Protein Resource (UniProt)." Nucleic Acids Res 40:D71-D75. Pubmed: 22102590
SMPDB Reactions:
1.0Thumb+1.0Thumb+1.0Thumb1.0Thumb+1.0Thumb+1.0Thumb+1.0Adenosine diphosphate+1.0Thumb
1.0Maltotetraose + 1.0Adenosine triphosphate + 1.0Water → 1.0Maltotetraose + 1.0Phosphate + 1.0Hydrogen ion + 1.0Adenosine diphosphate + 1.0ADP
ReactionCard
1.0Thumb+1.0Thumb+1.0Thumb1.0Adenosine diphosphate+1.0Thumb+1.0Thumb+1.0Thumb+1.0Thumb
1.0Maltotriose + 1.0Adenosine triphosphate + 1.0Water → 1.0Adenosine diphosphate + 1.0Phosphate + 1.0Hydrogen ion + 1.0Maltotriose + 1.0ADP
ReactionCard
1.0Thumb+1.0Thumb+1.0Thumb1.0Thumb+1.0Thumb+1.0Thumb+1.0Adenosine diphosphate+1.0Thumb
1.0D-Maltose + 1.0Adenosine triphosphate + 1.0Water → 1.0D-Maltose + 1.0Phosphate + 1.0Hydrogen ion + 1.0Adenosine diphosphate + 1.0ADP
ReactionCard
EcoCyc Reactions:
1.0Thumb+1.0Thumb+1.0Thumb1.0Thumb+1.0Thumb+1.0Thumb+1.0Thumb
1.0Thumb+1.0Thumb+1.0Thumb1.0Thumb+1.0Thumb+1.0Thumb+1.0Thumb
1.0Thumb+1.0Thumb+1.0Thumb1.0Thumb+1.0Thumb+1.0Thumb+1.0Thumb
Complex Reactions:
1.0Thumb+1.0Thumb+1.0Thumb1.0Thumb+1.0Thumb+1.0Thumb+1.0Thumb
1.0Thumb+1.0Thumb+1.0Thumb1.0Thumb+1.0Thumb+1.0Thumb+1.0Thumb
1.0Thumb+1.0Thumb+1.0Thumb1.0Thumb+1.0Thumb+1.0Thumb+1.0Thumb
Metabolites:
ECMDB IDNameView
ECMDB211101,4-alpha-D-glucanMetaboCard
ECMDB00538Adenosine triphosphateMetaboCard
ECMDB01341ADPMetaboCard
ECMDB00163D-MaltoseMetaboCard
ECMDB21225Hydrogen ionMetaboCard
ECMDB21243MaltohexaoseMetaboCard
ECMDB21244MaltopentaoseMetaboCard
ECMDB01296MaltotetraoseMetaboCard
ECMDB01262MaltotrioseMetaboCard
ECMDB01429PhosphateMetaboCard
ECMDB00494WaterMetaboCard
GO Classification:
Component
cell part
membrane
Function
transporter activity
Process
establishment of localization
transport
Gene Properties
Blattner:b4032
Gene OrientationCounterclockwise
Centisome Percentage:91.40
Left Sequence End4240649
Right Sequence End4241539
Gene Sequence:
>891 bp
ATGAGCGGCTTACCTCTTATTTCGCGCCGTCGACTGTTAACGGCGATGGCGCTTTCTCCG
TTGTTATGGCAGATGAATACCGCCCACGCGGCGGCTATTGATCCCAATCGTATTGTGGCG
CTGGAGTGGTTGCCGGTGGAATTACTGCTGGCGCTCGGCATCGTGCCTTACGGCGTGGCG
GATACCATCAACTATCGCCTGTGGGTCAGCGAACCACCATTGCCGGACTCAGTGATCGAC
GTCGGTTTGCGCACAGAACCTAACCTTGAACTGCTGACCGAAATGAAACCATCGTTTATG
GTCTGGTCGGCAGGATATGGCCCTTCACCAGAAATGCTGGCTCGTATTGCGCCGGGTCGC
GGATTTAACTTCAGTGACGGCAAACAGCCGTTGGCGATGGCGCGTAAATCGCTGACGGAA
ATGGCAGATTTACTTAACCTGCAAAGCGCAGCGGAAACGCATTTAGCGCAATATGAAGAC
TTTATCCGCAGCATGAAACCCCGCTTTGTGAAGCGTGGTGCGCGTCCGTTATTGCTGACG
ACGCTTATCGATCCGCGCCATATGCTGGTCTTCGGTCCAAACAGCTTGTTCCAGGAAATT
CTTGATGAGTACGGCATCCCAAATGCCTGGCAAGGGGAAACCAACTTCTGGGGCAGTACC
GCCGTCAGTATCGATCGTCTGGCGGCGTATAAAGACGTTGATGTGCTCTGTTTTGATCAC
GACAACAGCAAAGACATGGATGCGCTAATGGCAACGCCGCTGTGGCAGGCCATGCCGTTT
GTCCGCGCCGGACGCTTTCAGCGCGTACCTGCAGTCTGGTTTTATGGTGCGACGCTCTCG
GCAATGCACTTTGTGCGCGTTCTGGATAACGCCATCGGAGGTAAAGCGTGA
Protein Properties
Pfam Domain Function:
Protein Residues:296
Protein Molecular Weight:32225
Protein Theoretical pI:9
Signaling Regions:
  • None
Transmembrane Regions:
  • 19-39
  • 82-102
  • 124-144
  • 151-171
  • 205-225
  • 260-280
Protein Sequence:
>Maltose transport system permease protein malG
MAMVQPKSQKARLFITHLLLLLFIAAIMFPLLMVVAISLRQGNFATGSLIPEQISWDHWK
LALGFSVEQADGRITPPPFPVLLWLWNSVKVAGISAIGIVALSTTCAYAFARMRFPGKAT
LLKGMLIFQMFPAVLSLVALYALFDRLGEYIPFIGLNTHGGVIFAYLGGIALHVWTIKGY
FETIDSSLEEAAALDGATPWQAFRLVLLPLSVPILAVVFILSFIAAITEVPVASLLLRDV
NSYTLAVGMQQYLNPQNYLWGDFAAAAVMSALPITIVFLLAQRWLVNGLTAGGVKG
References
External Links:
ResourceLink
Uniprot ID:P68183
Uniprot Name:MALG_ECOLI
GenBank Gene ID:AP009048
Genebank Protein ID:85674358
Ecogene ID:EG10556
Ecocyc:EG10556
ColiBase:b4032
Kegg Gene:b4032
EchoBASE ID:EB0551
CCDB:MALG_ECOLI
BacMap:16131858
General Reference:
  • Blattner, F. R., Burland, V., Plunkett, G. 3rd, Sofia, H. J., Daniels, D. L. (1993). "Analysis of the Escherichia coli genome. IV. DNA sequence of the region from 89.2 to 92.8 minutes." Nucleic Acids Res 21:5408-5417. Pubmed: 8265357
  • Blattner, F. R., Plunkett, G. 3rd, Bloch, C. A., Perna, N. T., Burland, V., Riley, M., Collado-Vides, J., Glasner, J. D., Rode, C. K., Mayhew, G. F., Gregor, J., Davis, N. W., Kirkpatrick, H. A., Goeden, M. A., Rose, D. J., Mau, B., Shao, Y. (1997). "The complete genome sequence of Escherichia coli K-12." Science 277:1453-1462. Pubmed: 9278503
  • Boos, W., Shuman, H. (1998). "Maltose/maltodextrin system of Escherichia coli: transport, metabolism, and regulation." Microbiol Mol Biol Rev 62:204-229. Pubmed: 9529892
  • Daley, D. O., Rapp, M., Granseth, E., Melen, K., Drew, D., von Heijne, G. (2005). "Global topology analysis of the Escherichia coli inner membrane proteome." Science 308:1321-1323. Pubmed: 15919996
  • Dassa, E. (1990). "Cellular localization of the MalG protein from the maltose transport system in Escherichia coli K12." Mol Gen Genet 222:33-36. Pubmed: 2233678
  • Dassa, E. (1993). "Sequence-function relationships in MalG, an inner membrane protein from the maltose transport system in Escherichia coli." Mol Microbiol 7:39-47. Pubmed: 8437519
  • Dassa, E., Hofnung, M. (1985). "Sequence of gene malG in E. coli K12: homologies between integral membrane components from binding protein-dependent transport systems." EMBO J 4:2287-2293. Pubmed: 3000770
  • Dassa, E., Muir, S. (1993). "Membrane topology of MalG, an inner membrane protein from the maltose transport system of Escherichia coli." Mol Microbiol 7:29-38. Pubmed: 8437518
  • Davis, E. O., Henderson, P. J. (1987). "The cloning and DNA sequence of the gene xylE for xylose-proton symport in Escherichia coli K12." J Biol Chem 262:13928-13932. Pubmed: 2820984
  • Francoz, E., Dassa, E. (1988). "3' end of the malEFG operon in E.coli: localization of the transcription termination site." Nucleic Acids Res 16:4097-4109. Pubmed: 2836810
  • Hayashi, K., Morooka, N., Yamamoto, Y., Fujita, K., Isono, K., Choi, S., Ohtsubo, E., Baba, T., Wanner, B. L., Mori, H., Horiuchi, T. (2006). "Highly accurate genome sequences of Escherichia coli K-12 strains MG1655 and W3110." Mol Syst Biol 2:2006.0007. Pubmed: 16738553
  • Hunke, S., Mourez, M., Jehanno, M., Dassa, E., Schneider, E. (2000). "ATP modulates subunit-subunit interactions in an ATP-binding cassette transporter (MalFGK2) determined by site-directed chemical cross-linking." J Biol Chem 275:15526-15534. Pubmed: 10809785
  • Mourez, M., Hofnung, M., Dassa, E. (1997). "Subunit interactions in ABC transporters: a conserved sequence in hydrophobic membrane proteins of periplasmic permeases defines an important site of interaction with the ATPase subunits." EMBO J 16:3066-3077. Pubmed: 9214624