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A1B487 · NUOH_PARDP

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. This subunit may bind ubiquinone.

Catalytic activity

GO annotations

all annotationsall molecular functionvirus receptor activitydna bindingrna bindingcytoskeletal motor activitycatalytic activitygtpase activitystructural molecule activitytransporter activitycytoskeletal protein bindinglipid bindingcyclase activityantioxidant activityoxidoreductase activitytransferase activityhydrolase activitylyase activityisomerase activityligase activityprotein tag activitycargo receptor activityhistone bindingprotein folding chaperonetranslation regulator activitynutrient reservoir activityreceptor ligand activitymolecular transducer activitymolecular adaptor activitytoxin activitycell adhesion mediator activitymolecular function regulator activityvirus coreceptor activitycatalytic activity, acting on a proteincatalytic activity, acting on dnacatalytic activity, acting on rnamolecular carrier activitytranscription regulator activitygeneral transcription initiation factor activitymolecular sensor activitymolecular sequestering activityatp-dependent activityother molecular functionall biological processmitotic cell cyclecytokinesiscytoplasmic translationimmune system processmuscle system processcirculatory system processrenal system processrespiratory system processcarbohydrate metabolic processgeneration of precursor metabolites and energydna replicationdna repairdna recombinationchromatin organizationdna-templated transcriptionregulation of dna-templated transcriptiontrna metabolic processprotein foldingprotein glycosylationamino acid metabolic processmodified amino acid metabolic processlipid metabolic processvitamin metabolic processsulfur compound metabolic processintracellular protein transportnucleocytoplasmic transportautophagyinflammatory responsemitochondrion organizationcytoskeleton organizationmicrotubule-based movementperoxisome organizationlysosome organizationchromosome segregationcell adhesionestablishment or maintenance of cell polarityprogrammed cell deathphotosynthesismrna metabolic processsnrna metabolic processvesicle-mediated transportreproductive processdigestive system processsignalingcell differentiationprotein catabolic processextracellular matrix organizationregulatory ncrna-mediated gene silencingtelomere organizationcell junction organizationwound healingribosome biogenesiscilium organizationanatomical structure developmentcell motilitynervous system processendocrine processprotein maturationtransmembrane transportnucleobase-containing small molecule metabolic processhepaticobiliary system processmembrane organizationprotein-containing complex assemblycell wall organization or biogenesisnitrogen cycle metabolic processprotein localization to plasma membranedefense response to other organismdetoxificationmeiotic nuclear divisionmitotic nuclear divisionmitochondrial gene expressioncarbohydrate derivative metabolic processother biological processall cellular componentnuclear chromosomeextracellular regionextracellular spacecell wallnucleusnuclear envelopenucleoplasmchromosomenucleolusmitochondrionlysosomeendosomevacuoleperoxisomeendoplasmic reticulumgolgi apparatuslipid dropletmicrotubule organizing centercytosolribosomecytoskeletonplasma membraneciliumplastidthylakoidexternal encapsulating structureextracellular matrixcytoplasmic vesicleorganelleother cellular component
Cell color indicative of number of GO terms
AspectTerm
Cellular Componentplasma membrane
Molecular FunctionNADH dehydrogenase activity
Molecular Functionoxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor
Molecular Functionquinone binding
Biological Processaerobic respiration

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

  • Recommended name
    NADH-quinone oxidoreductase subunit H
  • EC number
  • Alternative names
    • NADH dehydrogenase I subunit 8
    • NADH dehydrogenase I subunit H
    • NADH-quinone oxidoreductase subunit 8 (NQO8)
    • NDH-1 subunit 8
    • NDH-1 subunit H

Gene names

    • Name
      nuoH
    • Synonyms
      nqo8
    • Ordered locus names
      Pden_2239

Organism names

Accessions

  • Primary accession
    A1B487

Proteomes

Subcellular Location

Cell inner membrane
; Multi-pass membrane protein

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane15-35Helical
Transmembrane82-102Helical
Transmembrane115-135Helical
Transmembrane161-181Helical
Transmembrane190-210Helical
Transmembrane240-262Helical
Transmembrane278-298Helical
Transmembrane309-329Helical

Keywords

PTM/Processing

Features

Showing features for chain.

TypeIDPosition(s)Description
ChainPRO_00002988351-345NADH-quinone oxidoreductase subunit H

Keywords

Interaction

Subunit

NDH-1 is composed of at least 14 different subunits, Nqo1 to Nqo14. The complex has a L-shaped structure, with the hydrophobic arm (subunits Nqo7, Nqo8, Nqo10 to Nqo14) embedded in the inner membrane and the hydrophilic peripheral arm (subunits Nqo1 to Nqo6, Nqo9) protruding into the bacterial cytoplasm. The hydrophilic domain contains all the redox centers (By similarity).
NADH-quinone oxidoreductase forms a supercomplex with ubiquinol-cytochrome c reductase complex (complex III or cytochrome b-c1 complex) and cytochrome c oxidase (complex IV), which stabilizes the NADH-quinone oxidoreductase complex (PubMed:14610094).

Protein-protein interaction databases

Structure

Family & Domains

Sequence similarities

Belongs to the complex I subunit 1 family.

Keywords

Phylogenomic databases

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    345
  • Mass (Da)
    38,841
  • Last updated
    2007-01-23 v1
  • MD5 Checksum
    B33D8B5C9F20B5964910473F229A3EB8
MAEFWASPYGFALSMLLQGLAVIAFVMGSLIFMVYGDRKIWAAVQMRRGPNVVGPWGLLQTFADALKYIVKEIVIPAGADKFVYFLAPFLSMMLALFAFVVIPFDEGWVMANINVGILFIFAASSLEVYGVIMGGWASNSKYPFLASLRSAAQMISYEVSLGLIIIGIIISTGSMNLTAIVEAQRGDYGLLNWYWLPHLPMVVLFFVSALAECNRPPFDLVEAESELVAGFMTEYSSTPYLLFMAGEYIAMYLMCALLSLLFFGGWLSPVPFIADGWWWMVIKMWFWFYMFAMVKAIVPRYRYDQLMRIGWKVFLPLSLGWVVLVAILARYEILGGFWARFAVGG

Keywords

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
CP000489
EMBL· GenBank· DDBJ
ABL70331.1
EMBL· GenBank· DDBJ
Genomic DNA

Genome annotation databases

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.
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