A0A6B9XXN0 · A0A6B9XXN0_9ASPA

  • Protein
    NAD(P)H-quinone oxidoreductase subunit K, chloroplastic
  • Gene
    ndhK
  • Status
    UniProtKB unreviewed (TrEMBL)
  • Amino acids
  • Protein existence
    Inferred from homology
  • Annotation score
    3/5

Function

function

NDH shuttles electrons from NAD(P)H:plastoquinone, via FMN and iron-sulfur (Fe-S) centers, to quinones in the photosynthetic chain and possibly in a chloroplast respiratory chain. The immediate electron acceptor for the enzyme in this species is believed to be plastoquinone. Couples the redox reaction to proton translocation, 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.

TypeIDPosition(s)Description
Binding site72[4Fe-4S] cluster (UniProtKB | ChEBI)
Binding site73[4Fe-4S] cluster (UniProtKB | ChEBI)
Binding site137[4Fe-4S] cluster (UniProtKB | ChEBI)
Binding site168[4Fe-4S] cluster (UniProtKB | ChEBI)

GO annotations

AspectTerm
Cellular Componentchloroplast thylakoid membrane
Molecular Function4 iron, 4 sulfur cluster binding
Molecular Functioniron ion binding
Molecular FunctionNADH dehydrogenase (ubiquinone) activity
Molecular Functionquinone binding
Biological Processaerobic respiration
Biological Processelectron transport coupled proton transport
Biological Processphotosynthesis, light reaction

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

  • Recommended name
    NAD(P)H-quinone oxidoreductase subunit K, chloroplastic
  • EC number
  • Alternative names
    • NAD(P)H dehydrogenase subunit K
    • NADH-plastoquinone oxidoreductase subunit K

Gene names

    • Name
      ndhK

Encoded on

  • Chloroplast

Organism names

  • Taxonomic identifier
  • Organism
  • Taxonomic lineage
    Eukaryota > Viridiplantae > Streptophyta > Embryophyta > Tracheophyta > Spermatophyta > Magnoliopsida > Liliopsida > Asparagales > Orchidaceae > Epidendroideae > Malaxideae > Dendrobiinae > Dendrobium

Accessions

  • Primary accession
    A0A6B9XXN0

Subcellular Location

Plastid, chloroplast thylakoid membrane
; Peripheral membrane protein

Keywords

PTM/Processing

Keywords

Interaction

Subunit

NDH is composed of at least 16 different subunits, 5 of which are encoded in the nucleus.

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain72-182NADH: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
    264
  • Mass (Da)
    29,891
  • Last updated
    2020-06-17 v1
  • Checksum
    3CAD580F485A7FF6
MAKRSVGMVLAEYLDNQKKREEKDDIETVMNLVEFPLLNQTTPNSIISTTSNDLSNWSRLSSLWPLLYGTSCCFIEFASLIGSRFDFDRYGLVPRSSPRQADLILTAGTVTMKMAPSLVRLYEQMPEPKYVIAMGACTITGGMFSTDSYSTVRGVDKLIPVDVYLPGCPPKPEAIIDAITKLRKKISRKIFEDRTVYQQENRCFTTNHKFYLRRSTHTGNYDQGLLYQSPSTSEIPFGFEKDFKSKRSVSSYELVNQAGFLCAE

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
MN913340
EMBL· GenBank· DDBJ
QHR92993.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

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