P23925 · MGLB_CITFR

  • Protein
    D-galactose/methyl-galactoside binding periplasmic protein MglB
  • Gene
    mglB
  • Status
    UniProtKB reviewed (Swiss-Prot)
  • Amino acids
  • Protein existence
    Inferred from homology
  • Annotation score
    3/5

Function

function

Part of the ABC transporter complex MglABC involved in galactose/methyl galactoside import (By similarity).
In addition, binds D-galactose and D-glucose and plays a role in the chemotaxis towards these two sugars by interacting with the Trg chemoreceptor (By similarity).

Features

Showing features for binding site, site.

133250100150200250300
Type
IDPosition(s)Description
Binding site37beta-D-galactose (UniProtKB | ChEBI)
Binding site37beta-D-glucose (UniProtKB | ChEBI)
Site97Interacts with membrane-bound trg signal transducer
Binding site114beta-D-galactose (UniProtKB | ChEBI)
Binding site114beta-D-glucose (UniProtKB | ChEBI)
Binding site157Ca2+ (UniProtKB | ChEBI)
Binding site159Ca2+ (UniProtKB | ChEBI)
Binding site161Ca2+ (UniProtKB | ChEBI)
Binding site163Ca2+ (UniProtKB | ChEBI)
Binding site165Ca2+ (UniProtKB | ChEBI)
Binding site175beta-D-galactose (UniProtKB | ChEBI)
Binding site175beta-D-glucose (UniProtKB | ChEBI)
Binding site177beta-D-galactose (UniProtKB | ChEBI)
Binding site177beta-D-glucose (UniProtKB | ChEBI)
Binding site181beta-D-galactose (UniProtKB | ChEBI)
Binding site181beta-D-glucose (UniProtKB | ChEBI)
Binding site228Ca2+ (UniProtKB | ChEBI)
Binding site234beta-D-galactose (UniProtKB | ChEBI)
Binding site234beta-D-glucose (UniProtKB | ChEBI)
Binding site259beta-D-galactose (UniProtKB | ChEBI)
Binding site259beta-D-glucose (UniProtKB | ChEBI)
Binding site279beta-D-galactose (UniProtKB | ChEBI)
Binding site279beta-D-glucose (UniProtKB | ChEBI)

GO annotations

AspectTerm
Cellular Componentouter membrane-bounded periplasmic space
Molecular Functioncarbohydrate binding
Molecular Functionmetal ion binding
Biological Processchemotaxis

Keywords

Names & Taxonomy

Protein names

  • Recommended name
    D-galactose/methyl-galactoside binding periplasmic protein MglB
  • Alternative names
    • D-galactose-binding periplasmic protein (GBP)
    • D-galactose/D-glucose-binding protein (GGBP)

Gene names

    • Name
      mglB

Organism names

  • Taxonomic identifier
  • Strain
    • ATCC 8090 / DSM 30039 / JCM 1657 / LMG 3246 / NCTC 9750
  • Taxonomic lineage
    Bacteria > Pseudomonadota > Gammaproteobacteria > Enterobacterales > Enterobacteriaceae > Citrobacter > Citrobacter freundii complex

Accessions

  • Primary accession
    P23925

Subcellular Location

PTM/Processing

Features

Showing features for signal, chain.

Type
IDPosition(s)Description
Signal1-23
ChainPRO_000003172124-332D-galactose/methyl-galactoside binding periplasmic protein MglB

Interaction

Subunit

The ABC transporter complex is composed of one ATP-binding protein (MglA), two transmembrane proteins (MglC) and a solute-binding protein (MglB).

Protein-protein interaction databases

Structure

Family & Domains

Domain

The calcium-binding site is structurally similar to that of EF-hand proteins, but is in two parts, with the last calcium ligand provided by Glu-228.

Sequence similarities

Keywords

Phylogenomic databases

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Sequence processing
    The displayed sequence is further processed into a mature form.
  • Length
    332
  • Mass (Da)
    35,817
  • Last updated
    1992-03-01 v1
  • Checksum
    2530E7EDE0471B1B
MNKKVLTLSAVMASMLFGAAAHAADTRIGVTIYKYDDNFMSVVRKAIEKDAKAAPDVQLLMNDSQNDQSKQNDQIDVLLAKGVKALAINLVDPAAAGTVIEKARGQNVPIVFFNKEPSRKALDSYDKAYYVGTDSKESGIIQGDLIAKHWAANPNWDLNKDGKIQFVLLKGEPGHPDAEARTTYVIKELNDKGIKTEQLQLDTAMWDTAQAKDKMDAWMSGPNANKIEVVIANNDAMAMGAVEALKAHNKTSVPVFGVDALPEALALVKSGAMAGTVLNDANNQAKATFDLAKNLADGKGAADGTNWKIENKIVRVPYVGVDKDNLAEFTNK

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
X59389
EMBL· GenBank· DDBJ
CAA42032.1
EMBL· GenBank· DDBJ
Genomic DNA

Genome annotation databases

Similar Proteins

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