Q1Q759 · Q1Q759_KUEST

  • Protein
    NADH-quinone oxidoreductase subunit B
  • Gene
    nuoB
  • Status
    UniProtKB unreviewed (TrEMBL)
  • Amino acids
  • Protein existence
    Inferred from homology
  • Annotation score
    3/5

Function

function

NDH-1 shuttles electrons from NADH, via FMN and iron-sulfur (Fe-S) centers, to quinones in the respiratory chain. The immediate electron acceptor for the enzyme in this species is believed to be ubiquinone. Couples the redox reaction to proton translocation (for every two electrons transferred, four hydrogen ions are translocated across the cytoplasmic membrane), and thus conserves the redox energy in a proton gradient.

Catalytic activity

Cofactor

[4Fe-4S] cluster (UniProtKB | Rhea| CHEBI:49883 )

Note: Binds 1 [4Fe-4S] cluster.

Features

Showing features for binding site.

121220406080100120140160180200
TypeIDPosition(s)Description
Binding site55[4Fe-4S] cluster (UniProtKB | ChEBI)
Binding site56[4Fe-4S] cluster (UniProtKB | ChEBI)
Binding site121[4Fe-4S] cluster (UniProtKB | ChEBI)
Binding site150[4Fe-4S] cluster (UniProtKB | ChEBI)

GO annotations

AspectTerm
Cellular Componentplasma membrane
Molecular Function4 iron, 4 sulfur cluster binding
Molecular Functioniron ion binding
Molecular FunctionNADH dehydrogenase (ubiquinone) activity
Molecular FunctionNADH:ubiquinone reductase (non-electrogenic) activity
Molecular Functionquinone binding
Biological Processaerobic respiration
Biological Processelectron transport coupled proton transport

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

  • Recommended name
    NADH-quinone oxidoreductase subunit B
  • EC number
  • Alternative names
    • NADH dehydrogenase I subunit B
    • NDH-1 subunit B

Gene names

    • Name
      nuoB
    • ORF names
      KsCSTR_26000
      , KSMBR1_3989
      , kuste2661

Organism names

  • Taxonomic identifier
  • Organism
  • Strains
    • Kuenenia_mbr1_ru-nijmegen
    • CSTR1
  • Taxonomic lineage
    Bacteria > Planctomycetota > Candidatus Brocadiia > Candidatus Brocadiales > Candidatus Brocadiaceae > Candidatus Kuenenia

Accessions

  • Primary accession
    Q1Q759

Proteomes

    • Identifier
    • Component
      Chromosome Kuenenia_stuttgartiensis_MBR1

Subcellular Location

Cell membrane
; Peripheral membrane protein

Keywords

PTM/Processing

Keywords

Interaction

Subunit

NDH-1 is composed of 14 different subunits. Subunits NuoB, C, D, E, F, and G constitute the peripheral sector of the complex.

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain55-164NADH:ubiquinone oxidoreductase-like 20kDa subunit

Sequence similarities

Belongs to the complex I 20 kDa subunit family.

Phylogenomic databases

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    212
  • Mass (Da)
    23,999
  • Last updated
    2006-05-16 v1
  • Checksum
    DDEFE4E029A19CBF
MKWWLTKSSDQTKTVSGTSSFEEAVQKTVVLCNLQNLIAWGRKNSLWPFNFGLSCCYVEMATSLTSKYDIARFGAEVIRGTPREADVMITAGTIFIKMAPIIKRLYEQMMEPRWIISMGSCSNSGGMYDIYSVVQGVDKFMPVDVYVPGCPPRPDAFMEGLLMLRDSVGKEKRPLSWFTGPQGITRMDPVSMKELKHENRMKMTKIKPPSEI

Keywords

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
CT573071
EMBL· GenBank· DDBJ
CAJ73410.1
EMBL· GenBank· DDBJ
Genomic DNA
CP049055
EMBL· GenBank· DDBJ
QII11979.1
EMBL· GenBank· DDBJ
Genomic DNA
LT934425
EMBL· GenBank· DDBJ
SOH06461.1
EMBL· GenBank· DDBJ
Genomic DNA

Genome annotation databases

Similar Proteins

Disclaimer

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