HAMAP rule MF_01301
General rule information
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| Accession | MF_01301 |
| Dates | 13-FEB-2002 (Created)
26-JAN-2023 (Last updated, Version 35) |
| Name | LamB |
| Scope(s) |
Bacteria Pseudomonadota |
| Template(s) | P02943 (LAMB_ECOLI); P26466 (LAMB_SALTY); [ Recover all ] |
| Triggered by |
HAMAP; MF_01301 (Get profile general information and statistics) |
Propagated annotation
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Identifier, protein and gene names
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| Identifier | LAMB |
| Protein name | RecName: Full=Maltoporin; AltName: Full=Maltose-inducible porin; Flags: Precursor; |
| Gene name | Name=lamB; |
Comments
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| FUNCTION | Involved in the transport of maltose and maltodextrins. |
| CATALYTIC ACTIVITY | Reaction=beta-maltose(in) = beta-maltose(out); Xref=Rhea:RHEA:29731, ChEBI:CHEBI:18147; |
| SUBUNIT | Homotrimer formed of three 18-stranded antiparallel beta- barrels, containing three independent channels. |
| SUBCELLULAR LOCATION | Cell outer membrane; Multi-pass membrane protein. |
| INDUCTION | By maltose. |
| SIMILARITY | Belongs to the porin LamB (TC 1.B.3) family. |
Keywords
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| Transport |
| Sugar transport |
| Membrane |
| Cell outer membrane |
| Transmembrane |
| Transmembrane beta strand |
| Ion transport |
| Porin |
| Signal |
Gene Ontology
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| GO:0015288; Molecular function:porin activity |
| GO:0015768; Biological process:maltose transport |
| GO:0009279; Cellular component:cell outer membrane |
Cross-references
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Features
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| From: LAMB_ECOLI (P02943) | ||||||||||||
| Key | From | To | Description | Tag | Condition | FTGroup | ||||||
| SITE | 31 | 31 | /note="Greasy slide, important in sugar transport" | Y | ||||||||
| SITE | 66 | 66 | /note="Greasy slide, important in sugar transport" | Y | ||||||||
| SITE | 99 | 99 | /note="Greasy slide, important in sugar transport" | W | ||||||||
| SITE | 143 | 143 | /note="Important in sugar transport" | Y | ||||||||
| SITE | 252 | 252 | /note="Greasy slide, important in sugar transport" | [YF] | ||||||||
| SITE | 383 | 383 | /note="Greasy slide, important in sugar transport" | W | ||||||||
| SITE | 445 | 445 | /note="Greasy slide, important in sugar transport" | W | ||||||||
Additional information
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| Size range | 398-452 amino acids |
| Related rules |
None |
| Fusion | Nter: None Cter: None |