A0ARU8 · A0ARU8_9LILI

  • 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 > Tracheophyta > Spermatophyta > Magnoliopsida > Liliopsida > Pandanales > Cyclanthaceae > Carludovica

Accessions

  • Primary accession
    A0ARU8

Subcellular Location

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

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane6-29Helical
Transmembrane41-61Helical
Transmembrane81-101Helical
Transmembrane108-125Helical
Transmembrane165-185Helical
Transmembrane205-226Helical
Transmembrane278-298Helical
Transmembrane305-324Helical
Transmembrane330-354Helical
Transmembrane375-397Helical
Transmembrane409-430Helical

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
Domain1-99NAD(P)H-quinone oxidoreductase subunit 2 N-terminal
Domain128-424NADH: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
    492
  • Mass (Da)
    54,544
  • Last updated
    2006-11-28 v1
  • Checksum
    D77F55D558C439FE
MKAFHLLLFHGSFIFPECILIFGLILLLMIDSTSDQKDRPWFYFISSTSLVMSITALLFRWREEPIISFSGNFQTNNFNEIFQFLILLCSTLCIPLSVEYIECTEMAITEFLLFVLTATLGGMFLCGANDLITIFVAPECFSLCSYLLSGYTKRDVRSNEATTKYLLMGGASSSILVHGFSWLYGLSGGEIELQEIVNGLINTQMYNAPGISIALISITVGIGFKLSPAPFHQWTPDVYEGSPTPVVAFLSVTSKVAASASATRIFDIPFYFSSNEWHLLLEILAILSMILGNLIAITQTSMKRMLAYSSIGQIGYVIIGIIVGDSNDGYASMITYMLFYISMNLGTFACIVLFGLRTGTDNIRDYAGLYTKDPFLALSSALCLLSLGGLPPLAGFFGKLYLFWCGWQAGLYFLVSIGLLTSVVSIYYYLKIIKLLMTERNQEITPHVRNYRRSPLRSNNSIELSMTVCVIASTIPGISMNPILAIAQDTLF

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
AY465626
EMBL· GenBank· DDBJ
AAS65743.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

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