ID   LAMB1_KLEP7             Reviewed;         423 AA.
AC   A6T5L4;
DT   26-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   21-AUG-2007, sequence version 1.
DT   25-MAY-2022, entry version 77.
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};
GN   OrderedLocusNames=KPN78578_04240; ORFNames=KPN_00433;
OS   Klebsiella pneumoniae subsp. pneumoniae (strain ATCC 700721 / MGH 78578).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Klebsiella/Raoultella group; Klebsiella.
OX   NCBI_TaxID=272620;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700721 / MGH 78578;
RG   The Klebsiella pneumonia Genome Sequencing Project;
RA   McClelland M., Sanderson E.K., Spieth J., Clifton W.S., Latreille P.,
RA   Sabo A., Pepin K., Bhonagiri V., Porwollik S., Ali J., Wilson R.K.;
RL   Submitted (SEP-2006) 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; CP000647; ABR75885.1; -; Genomic_DNA.
DR   RefSeq; WP_004177240.1; NC_009648.1.
DR   AlphaFoldDB; A6T5L4; -.
DR   SMR; A6T5L4; -.
DR   STRING; 272620.KPN_00433; -.
DR   EnsemblBacteria; ABR75885; ABR75885; KPN_00433.
DR   KEGG; kpn:KPN_00433; -.
DR   HOGENOM; CLU_032473_4_1_6; -.
DR   OMA; YYTYASW; -.
DR   Proteomes; UP000000265; 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; Reference proteome;
KW   Signal; Sugar transport; Transmembrane; Transmembrane beta strand;
KW   Transport.
FT   SIGNAL          1..23
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT   CHAIN           24..423
FT                   /note="Maltoporin 1"
FT                   /id="PRO_0000322013"
FT   SITE            36
FT                   /note="Greasy slide, important in sugar transport"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT   SITE            67
FT                   /note="Greasy slide, important in sugar transport"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01301"
FT   SITE            254
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;  46758 MW;  F0494C12E3B2B9E1 CRC64;
     MNTTLRALSV ALAAALIAPS AFAATAAIPT IDFHGYMRAG VGVSGDGSEA EWQKNKLGRL
     GNESDTYGEL ELGSEVYKKD DVSFYLDSMV SMVSDGSNDN ETTLNDDAQF GLRQLNLQIK
     GLIPGDPNAV IWGGKRYYQR HDLHIIDTKY WNISGSGAGV ENYTLGPGAV SLAWIRGDAN
     DVDYRVDGDS NVNINYIDLR YAGWKPWAGS WTEFGIDYAM PNTTKKQDSY GGLYDADNGV
     MLTGEISQDM LGGYNKTVLQ YANKGLAQNM VSQGGGWYDM WNYVNDATGY RVINTGLIPI
     TEKFSINHVL TWGSADDITD YTDKTRMLSL VARGQYQFTD YVRLIGEVGG FYQKDSYNNG
     TSYKQAGEKY TIALGLADGP DFMSRPELRI FASYLNDSED GKPFEDQTAN NTWNFGVQVE
     AWW