A0A9E8S3E5 · A0A9E8S3E5_9BRYO

  • Protein
    NAD(P)H-quinone oxidoreductase subunit 2, chloroplastic
  • Gene
    ndhB
  • Status
    UniProtKB unreviewed (TrEMBL)
  • Amino acids
  • Protein existence
    Inferred from homology
  • Annotation score
    3/5

Function

function

Core subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I) that is believed to belong to the minimal assembly required for catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.
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

GO annotations

AspectTerm
Cellular Componentchloroplast thylakoid membrane
Molecular FunctionNADH dehydrogenase (ubiquinone) activity
Molecular Functionquinone binding
Biological ProcessATP synthesis coupled electron transport
Biological Processphotosynthesis, light reaction

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

  • Recommended name
    NAD(P)H-quinone oxidoreductase subunit 2, chloroplastic
  • EC number
  • Alternative names
    • NAD(P)H dehydrogenase, subunit 2
    • NADH-plastoquinone oxidoreductase subunit 2

Gene names

    • Name
      ndhB

Encoded on

  • Chloroplast

Organism names

  • Taxonomic identifier
  • Organism
  • Taxonomic lineage
    Eukaryota > Viridiplantae > Streptophyta > Embryophyta > Bryophyta > Bryophytina > Bryopsida > Bryidae > Bryanae > Bryales > Bryaceae > Anomobryum

Accessions

  • Primary accession
    A0A9E8S3E5

Subcellular Location

Membrane
; Multi-pass membrane protein
Plastid, chloroplast thylakoid membrane
; Multi-pass membrane protein

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane15-35Helical
Transmembrane42-62Helical
Transmembrane82-102Helical
Transmembrane109-126Helical
Transmembrane132-152Helical
Transmembrane164-186Helical
Transmembrane206-227Helical
Transmembrane248-274Helical
Transmembrane280-299Helical
Transmembrane306-327Helical
Transmembrane333-354Helical
Transmembrane375-398Helical
Transmembrane410-430Helical
Transmembrane466-489Helical

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
Domain1-100NAD(P)H-quinone oxidoreductase subunit 2 N-terminal
Domain129-425NADH:quinone oxidoreductase/Mrp antiporter membrane subunit

Sequence similarities

Belongs to the complex I subunit 2 family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    501
  • Mass (Da)
    56,516
  • Last updated
    2023-05-03 v1
  • Checksum
    346536549E827885
MDLEFNFSFFYVNTILPECILIIFLIIILILDLILEIKNKSLLFYICLLGLSLSIFILFFQLEKEPTISFSGNFQDDNFNRIFQILIALCSILCIFLSIDFIECTKLSITEFILFLVTATIGAMFLCGANDLITIFVSLECLSLCSYLLSGYTKKDIRSNEAVMKYLLIGGLSSSILVYGFSWLYGLSGGELQLQKIADGLITTEMYNYSGSLIALIFITVGIGFKLSLVPFHQWTPDVYEGSPTPVVAFLSVASKIAGLALLVRIFNIVFPFLFNQWHFIFKILAICSMILGNIVAITQTSMKRMLAYSSISQIGYLMIGIIVGDFNGYTSMIVYLLFYIFMNLGIFACIILFGLRTGTDNIRDYNGLILKDPLLTFSLAICLLSLGGIPPFSGFFGKLYLFWCAWKDGLYFLVFIGLFTSIISIYYYLKIIKLLITEETKEVTSYIQTYTGFSFPIFYKNSIQVSIIICVIASMFLGIFMNPLISIIQNNLNLNSFTNI

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
ON310499
EMBL· GenBank· DDBJ
WAB46025.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. Our staff consists of biologists and biochemists that are not trained to give medical advice.
We'd like to inform you that we have updated our Privacy Notice to comply with Europe’s new General Data Protection Regulation (GDPR) that applies since 25 May 2018.
FeedbackHelp