LAMB_ECOUT
ID LAMB_ECOUT Reviewed; 446 AA.
AC Q1R3Q0;
DT 12-JUN-2007, integrated into UniProtKB/Swiss-Prot.
DT 16-MAY-2006, sequence version 1.
DT 25-MAY-2022, entry version 85.
DE RecName: Full=Maltoporin {ECO:0000255|HAMAP-Rule:MF_01301};
DE AltName: Full=Maltose-inducible porin {ECO:0000255|HAMAP-Rule:MF_01301};
DE Flags: Precursor;
GN Name=lamB {ECO:0000255|HAMAP-Rule:MF_01301}; OrderedLocusNames=UTI89_C4606;
OS Escherichia coli (strain UTI89 / UPEC).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC Enterobacteriaceae; Escherichia.
OX NCBI_TaxID=364106;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=UTI89 / UPEC;
RX PubMed=16585510; DOI=10.1073/pnas.0600938103;
RA Chen S.L., Hung C.-S., Xu J., Reigstad C.S., Magrini V., Sabo A.,
RA Blasiar D., Bieri T., Meyer R.R., Ozersky P., Armstrong J.R., Fulton R.S.,
RA Latreille J.P., Spieth J., Hooton T.M., Mardis E.R., Hultgren S.J.,
RA Gordon J.I.;
RT "Identification of genes subject to positive selection in uropathogenic
RT strains of Escherichia coli: a comparative genomics approach.";
RL Proc. Natl. Acad. Sci. U.S.A. 103:5977-5982(2006).
CC -!- FUNCTION: Involved in the transport of maltose and maltodextrins.
CC {ECO:0000255|HAMAP-Rule:MF_01301}.
CC -!- SUBUNIT: Homotrimer formed of three 18-stranded antiparallel beta-
CC barrels, containing three independent channels. {ECO:0000255|HAMAP-
CC Rule:MF_01301}.
CC -!- SUBCELLULAR LOCATION: Cell outer membrane {ECO:0000255|HAMAP-
CC Rule:MF_01301}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC Rule:MF_01301}.
CC -!- INDUCTION: By maltose. {ECO:0000255|HAMAP-Rule:MF_01301}.
CC -!- SIMILARITY: Belongs to the porin LamB (TC 1.B.3) family.
CC {ECO:0000255|HAMAP-Rule:MF_01301}.
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DR EMBL; CP000243; ABE10014.1; -; Genomic_DNA.
DR RefSeq; WP_000973666.1; NC_007946.1.
DR AlphaFoldDB; Q1R3Q0; -.
DR SMR; Q1R3Q0; -.
DR EnsemblBacteria; ABE10014; ABE10014; UTI89_C4606.
DR KEGG; eci:UTI89_C4606; -.
DR HOGENOM; CLU_032473_4_1_6; -.
DR OMA; DYGRANA; -.
DR Proteomes; UP000001952; Chromosome.
DR GO; GO:0009279; C:cell outer membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0046930; C:pore complex; IEA:UniProtKB-KW.
DR GO; GO:0042958; F:maltodextrin transmembrane transporter activity; IEA:InterPro.
DR GO; GO:0015481; F:maltose transporting porin activity; IEA:InterPro.
DR GO; GO:0006811; P:ion transport; IEA:UniProtKB-KW.
DR CDD; cd01346; Maltoporin-like; 1.
DR Gene3D; 2.40.170.10; -; 1.
DR HAMAP; MF_01301; LamB; 1.
DR InterPro; IPR023738; Maltoporin.
DR InterPro; IPR003192; Porin_LamB.
DR InterPro; IPR036998; Porin_LamB_sf.
DR Pfam; PF02264; LamB; 1.
PE 3: Inferred from homology;
KW Cell outer membrane; Ion transport; Membrane; Porin; Signal;
KW Sugar transport; Transmembrane; Transmembrane beta strand; Transport.
FT SIGNAL 1..25
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT CHAIN 26..446
FT /note="Maltoporin"
FT /id="PRO_0000290217"
FT SITE 31
FT /note="Greasy slide, important in sugar transport"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT SITE 66
FT /note="Greasy slide, important in sugar transport"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT SITE 99
FT /note="Greasy slide, important in sugar transport"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT SITE 143
FT /note="Important in sugar transport"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT SITE 252
FT /note="Greasy slide, important in sugar transport"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT SITE 383
FT /note="Greasy slide, important in sugar transport"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT SITE 445
FT /note="Greasy slide, important in sugar transport"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
SQ SEQUENCE 446 AA; 49941 MW; 66AD83740268B030 CRC64;
MMITLRKLPL AVAVAAGVMS AQAMAVDFHG YARSGIGWTG SGGEQQCFQT TGAQSKYRLG
NECETYAELK LGQEVWKEGD KSFYFDTNVA YSVAQQNDWE ATDPAFREAN VQGKNLIEWL
PGSTIWAGKR FYQRHDVHMI DFYYWDISGP GAGLENIDVG FGKLSLAATR SSEAGGSSSF
ASNNIYDYTN ETANDVFDVR LAQMEINPGG TLELGVDYGR ANLRDNYRLV DGASKDGWLF
TAEHTQSVLK GFNKFVVQYA TDSMTSQGKG LSQGSGVAFD NEKFAYNINN NGHMLRILDH
GAISMGDNWD MMYVGMYQDI NWDNDNGTKW WTVGIRPMYK WTPIMSTVME IGYDNVESQR
TGDKNNQYKI TLAQQWQAGD SIWSRPAIRV FATYAKWDEK WGYDYTGSSS TNPYYGKAVS
ADFNGGSFGR GDSDEWTFGA QMEIWW