ID   LAMB_VIBC1              Reviewed;         447 AA.
AC   A7N5Q9;
DT   26-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   02-OCT-2007, sequence version 1.
DT   03-AUG-2022, entry version 81.
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};
GN   OrderedLocusNames=VIBHAR_04821;
OS   Vibrio campbellii (strain ATCC BAA-1116).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Vibrionales; Vibrionaceae;
OC   Vibrio.
OX   NCBI_TaxID=2902295;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-1116 / BB120;
RG   The Vibrio harveyi Genome Sequencing Project;
RA   Bassler B., Clifton S.W., Fulton L., Delehaunty K., Fronick C.,
RA   Harrison M., Markivic C., Fulton R., Tin-Wollam A.-M., Shah N., Pepin K.,
RA   Nash W., Thiruvilangam P., Bhonagiri V., Waters C., Tu K.C., Irgon J.,
RA   Wilson R.K.;
RL   Submitted (AUG-2007) to the EMBL/GenBank/DDBJ databases.
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; CP000790; ABU72730.1; -; Genomic_DNA.
DR   AlphaFoldDB; A7N5Q9; -.
DR   SMR; A7N5Q9; -.
DR   EnsemblBacteria; ABU72730; ABU72730; VIBHAR_04821.
DR   KEGG; vha:VIBHAR_04821; -.
DR   PATRIC; fig|338187.36.peg.3708; -.
DR   OMA; DYGRANA; -.
DR   Proteomes; UP000008152; Chromosome II.
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..26
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT   CHAIN           27..447
FT                   /note="Maltoporin"
FT                   /id="PRO_0000322016"
FT   SITE            32
FT                   /note="Greasy slide, important in sugar transport"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT   SITE            64
FT                   /note="Greasy slide, important in sugar transport"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT   SITE            97
FT                   /note="Greasy slide, important in sugar transport"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT   SITE            167
FT                   /note="Important in sugar transport"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT   SITE            281
FT                   /note="Greasy slide, important in sugar transport"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT   SITE            405
FT                   /note="Greasy slide, important in sugar transport"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT   SITE            446
FT                   /note="Greasy slide, important in sugar transport"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
SQ   SEQUENCE   447 AA;  48530 MW;  2DA2763E18989B5F CRC64;
     MELRMKKVSV IAAAVAATLA AGSAFAVDFH GYMRAGVGVS ADGGQQVTFE KQKIGRLGNE
     GDIYGEIQLG QEVYNNNGKT FYVDSMIAVT SNGSNDWEGT ASNCGTTVSH PDGQDPSATT
     KCVDDAEFAL RQFNVQAKGV LDFAPEATLW AGKRYYQRHD IHISDFYYWN ISGAGAGVEG
     IEAGPGQLSF AWVRNDRNDN FKLGENNPGD TPDAGNDGGA ANVNTLDLRY AGLPVWENGS
     LELGLNYALV NETDDASDAA KDAKDGVMFT AELTQGLDSG FNKTVFQYGT EGYSKTMAFY
     GDGSWYGAEA NDGASGYRLI NWGVIGMGQN WEMGHQLVYG VGEDMWDGQD KLETMSVVVR
     PMYKWDDNHK TIFEAGYAID DNDGAENKFG KLTVAQAWSA GSSFWARPEI RVYASYLTAD
     KDDNSNAFDG GRSDDTFQFG VQAEAWW