TCDB is operated by the Saier Lab Bioinformatics Group
« See all members of the family


3.A.1.1.22
The maltose, maltotriose, mannotetraose (MalE1)/maltose, maltotriose, trehalose (MalE2) porter (Nanavati et al., 2005). For MalG1 (823aas) and MalG2 (833aas), the C-terminal transmembrane domain with 6 putative TMSs is preceded by a single N-terminal TMS and a large (600 residue) hydrophilic region showing sequence similarity to MLP1 and 2 (9.A.14; e-12 & e-7) as well as other proteins.

Accession Number:Q9X0T1
Protein Name:MalE1; aka Maltose ABC transporter, periplasmic maltose-binding protein
Length:391
Molecular Weight:43018.00
Species:Thermotoga maritima [2336]
Number of TMSs:1
Location1 / Topology2 / Orientation3: Mitochondrion inner membrane1 / Single-pass type II membrane protein2 / Intermembrane side3
Substrate Maltose, Maltotriose, Maltotetraose, Trehalose

Cross database links:

HEGENOM: HBG727666
RefSeq: NP_229009.1   
Entrez Gene ID: 898280   
Pfam: PF01547   
BioCyc: TMAR243274:TM_1204-MONOMER   
KEGG: tma:TM1204   

Gene Ontology

GO:0005363 F:maltose transmembrane transporter activity
GO:0015768 P:maltose transport

References (1)

[1] “Evidence for lateral gene transfer between Archaea and Bacteria from genome sequence of Thermotoga maritima.”  Nelson K.E.et.al.   10360571
Structure:
2GHA   2GHB     

External Searches:

  • Search: DB with
  • BLAST ExPASy (Swiss Institute of Bioinformatics (SIB) BLAST)
  • CDD Search (Conserved Domain Database)
  • Search COGs (Clusters of Orthologous Groups of proteins)
  • 2° Structure (Network Protein Sequence Analysis)

Analyze:

Predict TMSs (Predict number of transmembrane segments)
Window Size: Angle:  
Window Size: Angle:  
FASTA formatted sequence
1:	MKKFLVIALL VVSLVVLAQP KLTIWCSEKQ VDILQKLGEE FKAKYGVEVE VQYVNFQDIK 
61:	SKFLTAAPEG QGADIIVGAH DWVGELAVNG LIEPIPNFSD LKNFYETALN AFSYGGKLYG 
121:	IPYAMEAIAL IYNKDYVPEP PKTMDELIEI AKQIDEEFGG EVRGFITSAA EFYYIAPFIF 
181:	GYGGYVFKQT EKGLDVNDIG LANEGAIKGV KLLKRLVDEG ILDPSDNYQI MDSMFREGQA 
241:	AMIINGPWAI KAYKDAGIDY GVAPIPDLEP GVPARPFVGV QGFMVNAKSP NKLLAIEFLT 
301:	SFIAKKETMY RIYLGDPRLP SRKDVLELVK DNPDVVGFTL SAANGIPMPN VPQMAAVWAA 
361:	MNDALNLVVN GKATVEEALK NAVERIKAQI Q