AC   MF_01301;
DC   Protein; auto
TR   HAMAP; MF_01301; -; 1; level=0
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Names: LamB
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ID   LAMB
DE   RecName: Full=Maltoporin;
DE   AltName: Full=Maltose-inducible porin;
DE   Flags: Precursor;
GN   Name=lamB;
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CC   -!- FUNCTION: Involved in the transport of maltose and maltodextrins.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=beta-maltose(in) = beta-maltose(out); Xref=Rhea:RHEA:29731,
CC         ChEBI:CHEBI:18147;
CC   -!- SUBUNIT: Homotrimer formed of three 18-stranded antiparallel beta-
CC       barrels, containing three independent channels.
CC   -!- SUBCELLULAR LOCATION: Cell outer membrane; Multi-pass membrane protein.
CC   -!- INDUCTION: By maltose.
CC   -!- SIMILARITY: Belongs to the porin LamB (TC 1.B.3) family.
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DR   Pfam; PF02264; LamB; 1; trigger=no
DR   General; Signal; -; 1; trigger=yes
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KW   Transport
KW   Sugar transport
KW   Membrane
KW   Cell outer membrane
KW   Transmembrane
KW   Transmembrane beta strand
KW   Ion transport
KW   Porin
KW   Signal
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GO   GO:0015288; F:porin activity
GO   GO:0015768; P:maltose transport
GO   GO:0009279; C:cell outer membrane
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FT   From: LAMB_ECOLI (P02943)
FT   SITE            31
FT                   /note="Greasy slide, important in sugar transport"
FT   Condition: Y
FT   SITE            66
FT                   /note="Greasy slide, important in sugar transport"
FT   Condition: Y
FT   SITE            99
FT                   /note="Greasy slide, important in sugar transport"
FT   Condition: W
FT   SITE            143
FT                   /note="Important in sugar transport"
FT   Condition: Y
FT   SITE            252
FT                   /note="Greasy slide, important in sugar transport"
FT   Condition: [YF]
FT   SITE            383
FT                   /note="Greasy slide, important in sugar transport"
FT   Condition: W
FT   SITE            445
FT                   /note="Greasy slide, important in sugar transport"
FT   Condition: W
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Size: 398-452;
Related: None;
Template: P02943; P26466;
Scope:
 Bacteria; Pseudomonadota
Fusion:
 Nter: None
 Cter: None
Duplicate: in AERS4, KLEP7, YERP3, YERPA, YERPE, YERPN, YERPP, YERPS
Plasmid: None
Comments: None
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# Revision 1.35 2023/01/26
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