ID   LAMB_VIBPH              Reviewed;         275 AA.
AC   Q56714;
DT   15-DEC-1998, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1996, sequence version 1.
DT   25-MAY-2022, entry version 80.
DE   RecName: Full=Maltoporin;
DE   AltName: Full=Maltose-inducible porin;
DE   AltName: Full=Outer membrane protein S;
DE   Flags: Fragment;
GN   Name=lamB; Synonyms=ompS;
OS   Vibrio parahaemolyticus.
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Vibrionales; Vibrionaceae;
OC   Vibrio.
OX   NCBI_TaxID=670;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=7702622; DOI=10.1006/bbrc.1995.1423;
RA   Lang H., Ferenci T.;
RT   "Sequence alignment and structural modelling of the LamB glycoporin
RT   family.";
RL   Biochem. Biophys. Res. Commun. 208:927-934(1995).
CC   -!- FUNCTION: Involved in the transport of maltose and maltodextrins.
CC       {ECO:0000250}.
CC   -!- SUBUNIT: Homotrimer formed of three 18-stranded antiparallel beta-
CC       barrels, containing three independent channels. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cell outer membrane {ECO:0000250}; Multi-pass
CC       membrane protein {ECO:0000250}.
CC   -!- INDUCTION: By maltose. {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the porin LamB (TC 1.B.3) family. {ECO:0000305}.
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DR   EMBL; U16151; AAA70347.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q56714; -.
DR   SMR; Q56714; -.
DR   GO; GO:0009279; C:cell outer membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0046930; C:pore complex; IEA:UniProtKB-KW.
DR   GO; GO:0015288; F:porin activity; IEA:UniProtKB-KW.
DR   GO; GO:0034219; P:carbohydrate transmembrane transport; IEA:InterPro.
DR   GO; GO:0006811; P:ion transport; IEA:UniProtKB-KW.
DR   Gene3D; 2.40.170.10; -; 1.
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; Sugar transport;
KW   Transmembrane; Transmembrane beta strand; Transport.
FT   CHAIN           <1..>275
FT                   /note="Maltoporin"
FT                   /id="PRO_0000196262"
FT   SITE            14
FT                   /note="Important in sugar transport"
FT                   /evidence="ECO:0000250"
FT   SITE            105
FT                   /note="Greasy slide, important in sugar transport"
FT                   /evidence="ECO:0000250"
FT   SITE            231
FT                   /note="Greasy slide, important in sugar transport"
FT                   /evidence="ECO:0000250"
FT   NON_TER         1
FT   NON_TER         275
SQ   SEQUENCE   275 AA;  29936 MW;  C77467387BA95D42 CRC64;
     RCYQRKDIHI TDFYFLNTSG TGGGIENLSV GNQKLSLAII QDGEDQNGAG YIADARLANI
     GLWEDASLEV ALGINFSTES KNGKYDGDDG LLASGIIHQN MSNGFNQTVV QVGTAGYGIQ
     MANFWGAGAY YDRSGDQNDA SGYRVINWGV MNLGENWEMG HQLAYLAGSD LGTTKYDSSQ
     YSIVARPMYK WNDTMRTIFE AGYNAGEVDD VDFGGAKFTV AQAWAMGDSF WARPEIRVYG
     SYLMDLENDS FGEVKNDTGV VTAAGTDNDF VVGIH