ID   LAMB2_YERPA             Reviewed;         419 AA.
AC   Q1CAY4;
DT   12-JUN-2007, integrated into UniProtKB/Swiss-Prot.
DT   11-JUL-2006, sequence version 1.
DT   25-MAY-2022, entry version 81.
DE   RecName: Full=Maltoporin 2 {ECO:0000255|HAMAP-Rule:MF_01301};
DE   AltName: Full=Maltose-inducible porin 2 {ECO:0000255|HAMAP-Rule:MF_01301};
DE   Flags: Precursor;
GN   Name=lamB2 {ECO:0000255|HAMAP-Rule:MF_01301}; OrderedLocusNames=YPA_0420;
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; ABG12388.1; -; Genomic_DNA.
DR   RefSeq; WP_002215759.1; NZ_CP009906.1.
DR   AlphaFoldDB; Q1CAY4; -.
DR   SMR; Q1CAY4; -.
DR   EnsemblBacteria; ABG12388; ABG12388; YPA_0420.
DR   GeneID; 57973789; -.
DR   KEGG; ypa:YPA_0420; -.
DR   OMA; YYTYASW; -.
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..23
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT   CHAIN           24..419
FT                   /note="Maltoporin 2"
FT                   /id="PRO_5000115778"
FT   SITE            32
FT                   /note="Greasy slide, important in sugar transport"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT   SITE            63
FT                   /note="Greasy slide, 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            418
FT                   /note="Greasy slide, important in sugar transport"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
SQ   SEQUENCE   419 AA;  46264 MW;  A14220470B99D3E4 CRC64;
     MKTSLRTLSV ALAAALVSPS VLAIEKIDFH GYMRAGVGVS SDGGLAEWQK TMVGRLGNES
     DTYGEIGLGA EVYKKEDVSF YLDSMVSMLS DGSNDSETTI GDDAQFGLRQ LNLQIKGLIP
     GDKEAVIWGG KRYYQRHDLH IIDTKYWNIS GSGAGIENYT VGPGAVSVAW VRGDANDVDT
     RITGDSDVNI NYIDVRYAGF KPWAGSWTEV GIDYAMPNPT KQQKEYGGLY DADNAVMLTG
     EISQDMFGGY NKLVLQYANK GLAQNMISQG GGWYDMWHKT DEAKGYRVIN TGLIPITDKF
     SFNHVLTWGS ANDITEYTDK TNLISLVGRA QYQFTQYVRA IGEVGGFYQK DTYHNGSNYK
     QGGEKYTIAL GLAEGPDFLS RPELRVFASY LNDSENGKPF EDGTSNDTWN FGVQVEAWW