A0A0S2IGD7 · A0A0S2IGD7_CUCPE

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.

122620406080100120140160180200220
TypeIDPosition(s)Description
Binding site43[4Fe-4S] cluster (UniProtKB | ChEBI)
Binding site44[4Fe-4S] cluster (UniProtKB | ChEBI)
Binding site108[4Fe-4S] cluster (UniProtKB | ChEBI)
Binding site139[4Fe-4S] cluster (UniProtKB | ChEBI)

GO annotations

AspectTerm
Cellular Componentchloroplast
Cellular Componentplasma membrane
Cellular Componentthylakoid
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
      ndhK
    • Synonyms
      nuoB

Encoded on

  • Plastid

Organism names

  • Taxonomic identifier
  • Strain
    • 013
  • Taxonomic lineage
    Eukaryota > Viridiplantae > Streptophyta > Embryophyta > Tracheophyta > Spermatophyta > Magnoliopsida > eudicotyledons > Gunneridae > Pentapetalae > rosids > fabids > Cucurbitales > Cucurbitaceae > Cucurbiteae > Cucurbita

Accessions

  • Primary accession
    A0A0S2IGD7

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
Domain43-153NADH:ubiquinone oxidoreductase-like 20kDa subunit

Sequence similarities

Belongs to the complex I 20 kDa subunit family.

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    226
  • Mass (Da)
    25,355
  • Last updated
    2016-02-17 v1
  • Checksum
    B394F92392BE66CB
MNSIEFPLLDRTTQTSVISTTSNDLSNWSRLSSLWPLLYGTSCCFIEFASLIGSRFDFDRYGLVPRSSPRQADLILTAGTVTMKMAPSLVRLYEQMPEPKYVIAMGACTITGGMFSTDSYSTVRGVDKLIPVDVYLPGCPPKPEAVIDAITKLRKKISREIYEDRIKSQEENRCFTTNHKFHVGPSTHTGNYDQGLLYQPSSTSEIIPPETFFKYKSSVSSYELVN

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
KT898818
EMBL· GenBank· DDBJ
ALO22713.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

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