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3.A.1.1.51
Maltose - maltoheptaose transporter, MalEFGK.  MalEF is a R-M fusion protein with the MalE domain N-terminal and the MalF domain C-terminal. The protein, of 733 aas, has 8 TMSs, one N-terminal to MalE (a signal sequence for export of the MalE domain to the periplasm), an extra TMS at the N-terminus to bring the N-terminus to the periplasmic side of the inner membrane, and then the usual 6 TMSs observed for many ABC membrane proteins.  MalG (M, 272 aas, 6 TMSs) and MalK (C, 374 aas) are of normal size and composition. While MalE of E. coli was able to additionally increase ATPase activity of MalFGK2 in vitro, the isolated MalE domain of B. bacteriovorus failed to stimulate the E. coli system (Licht et al. 2018). The adjacent genes are an α-amylase (Q6MNM3) and a glucokinase (Q6MNM4).

Accession Number:Q6MNM2
Protein Name:ABC-type maltose transport, ATP binding protein
Length:347
Molecular Weight:38285.00
Species:Bdellovibrio bacteriovorus (strain ATCC 15356 / DSM 50701 / NCIB 9529 / HD100) [264462]
Substrate Maltose, Maltotriose, Maltotetrose, Maltopentose, Maltohexose, Maltoheptose, Trehalose

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FASTA formatted sequence
1:	MAKIQFSNIK KSFGSADVLK GIDLDIAPGE FLVLVGPSGC GKSTLLRTLA GLESADSGTI 
61:	SIDGKKINDI EPQNRDIAMV FQSYALYPHM TVAENMGFGL KLKNLAAAEI TKRVNEISEL 
121:	LQIKHLLDRK PKELSGGQRQ RVALGRALSR QTPVILFDEP LSNLDAHLRS QMRLEIKRLH 
181:	HNSKSTMIYV THDQMEATTL GDRIAVLKDG VIEQIGTPSE IYHRPKNTFI ATFIGSPEMN 
241:	FLEGAVLEKI PWPEARKADQ ILGIRPDAFA LNQGPLGTQE VALGDFQIDI SENLGGQQML 
301:	HGTLAGNNVR ILVDSMDNFS MKQTLPLKID LTKAHLFDKK TGLNQRL