ID   LAMB1_YERPA             Reviewed;         423 AA.
AC   Q1CC20;
DT   12-JUN-2007, integrated into UniProtKB/Swiss-Prot.
DT   11-JUL-2006, sequence version 1.
DT   25-MAY-2022, entry version 86.
DE   RecName: Full=Maltoporin 1 {ECO:0000255|HAMAP-Rule:MF_01301};
DE   AltName: Full=Maltose-inducible porin 1 {ECO:0000255|HAMAP-Rule:MF_01301};
DE   Flags: Precursor;
GN   Name=lamB1 {ECO:0000255|HAMAP-Rule:MF_01301}; OrderedLocusNames=YPA_0033;
OS   Yersinia pestis bv. Antiqua (strain Antiqua).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Yersiniaceae; Yersinia.
OX   NCBI_TaxID=360102;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Antiqua;
RX   PubMed=16740952; DOI=10.1128/jb.00124-06;
RA   Chain P.S.G., Hu P., Malfatti S.A., Radnedge L., Larimer F., Vergez L.M.,
RA   Worsham P., Chu M.C., Andersen G.L.;
RT   "Complete genome sequence of Yersinia pestis strains Antiqua and Nepal516:
RT   evidence of gene reduction in an emerging pathogen.";
RL   J. Bacteriol. 188:4453-4463(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; CP000308; ABG12002.1; -; Genomic_DNA.
DR   RefSeq; WP_002212092.1; NZ_CP009906.1.
DR   AlphaFoldDB; Q1CC20; -.
DR   SMR; Q1CC20; -.
DR   EnsemblBacteria; ABG12002; ABG12002; YPA_0033.
DR   GeneID; 66843941; -.
DR   KEGG; ypa:YPA_0033; -.
DR   OMA; DYGRANA; -.
DR   Proteomes; UP000001971; 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..24
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT   CHAIN           25..423
FT                   /note="Maltoporin 1"
FT                   /id="PRO_5000115704"
FT   SITE            30
FT                   /note="Greasy slide, important in sugar transport"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT   SITE            65
FT                   /note="Greasy slide, important in sugar transport"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT   SITE            98
FT                   /note="Greasy slide, important in sugar transport"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT   SITE            142
FT                   /note="Important in sugar transport"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT   SITE            250
FT                   /note="Greasy slide, important in sugar transport"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT   SITE            370
FT                   /note="Greasy slide, important in sugar transport"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT   SITE            422
FT                   /note="Greasy slide, important in sugar transport"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
SQ   SEQUENCE   423 AA;  46853 MW;  DD4AA853F3370D01 CRC64;
     MITLRKLPIA LAVAAGVLST QAMAVDFHGY ARSGIGWTAS GGEQQCFQTT GAQSKYRLGN
     ECETYAELKL GQELWKEGDK SFYLDTNVAY SVSQRDDWES TDPAFREANV QGKNLIESLP
     GSTIWAGKRF YQRHDVHMID FYYWDISGPG AGLETIDLGF GKLSVAATRN SESGGSSAWI
     DNQRENAKYT INNVYDVRLA GLETNPGGSL ELGVDYGRAD TQEGYSLAPN ASKDGVMLTA
     EHTQSLMGGF NKFVVQYATD SMTSYNTGHS QGTSVNNNGH LLRVIDHGAI NLAEKWDMMY
     VALYQDIDLD NNNGNTWYSV GVRPMYKWTP IMSTLLEAGY DNVKSQHTGE RNGQYKLTLA
     QQWQAGDSIW SRPAIRVFAT YANWDEKWGY SDTTGVAQDG TIGTNSRGKN NEVTFGAQFE
     AWW