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Protein

NAD(P)H-quinone oxidoreductase subunit K

Gene

ndhK

Organism
Prochlorococcus marinus (strain MIT 9303)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

NDH-1 shuttles electrons from an unknown electron donor, via FMN and iron-sulfur (Fe-S) centers, to quinones in the respiratory and/or the photosynthetic 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. Cyanobacterial NDH-1 also plays a role in inorganic carbon-concentration.UniRule annotation

Catalytic activityi

NAD(P)H + plastoquinone = NAD(P)+ + plastoquinol.UniRule annotation

Cofactori

[4Fe-4S] clusterUniRule annotationNote: Binds 1 [4Fe-4S] cluster.UniRule annotation

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi60 – 601Iron-sulfur (4Fe-4S)UniRule annotation
Metal bindingi61 – 611Iron-sulfur (4Fe-4S)UniRule annotation
Metal bindingi125 – 1251Iron-sulfur (4Fe-4S)UniRule annotation
Metal bindingi156 – 1561Iron-sulfur (4Fe-4S)UniRule annotation

GO - Molecular functioni

  1. 4 iron, 4 sulfur cluster binding Source: UniProtKB-KW
  2. iron ion binding Source: UniProtKB-HAMAP
  3. NADH dehydrogenase (ubiquinone) activity Source: InterPro
  4. quinone binding Source: UniProtKB-KW

GO - Biological processi

  1. photosynthesis, light reaction Source: UniProtKB-HAMAP
  2. transport Source: UniProtKB-KW
Complete GO annotation...

Keywords - Molecular functioni

Oxidoreductase

Keywords - Biological processi

Transport

Keywords - Ligandi

4Fe-4S, Iron, Iron-sulfur, Metal-binding, NAD, NADP, Plastoquinone

Enzyme and pathway databases

BioCyciPMAR59922:GH54-2631-MONOMER.

Names & Taxonomyi

Protein namesi
Recommended name:
NAD(P)H-quinone oxidoreductase subunit KUniRule annotation (EC:1.6.5.-UniRule annotation)
Alternative name(s):
NAD(P)H dehydrogenase I subunit KUniRule annotation
NDH-1 subunit KUniRule annotation
Short name:
NDH-KUniRule annotation
Gene namesi
Name:ndhKUniRule annotation
Ordered Locus Names:P9303_25251
OrganismiProchlorococcus marinus (strain MIT 9303)
Taxonomic identifieri59922 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaProchloralesProchlorococcaceaeProchlorococcus
ProteomesiUP000002274 Componenti: Chromosome

Subcellular locationi

Cellular thylakoid membrane UniRule annotation; Peripheral membrane protein UniRule annotation; Cytoplasmic side UniRule annotation

GO - Cellular componenti

  1. thylakoid membrane Source: UniProtKB-SubCell
Complete GO annotation...

Keywords - Cellular componenti

Membrane, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 250250NAD(P)H-quinone oxidoreductase subunit KPRO_0000358453Add
BLAST

Keywords - PTMi

Quinone

Interactioni

Subunit structurei

NDH-1 can be composed of about 15 different subunits; different subcomplexes with different compositions have been identified which probably have different functions.UniRule annotation

Protein-protein interaction databases

STRINGi59922.P9303_25251.

Family & Domainsi

Sequence similaritiesi

Belongs to the complex I 20 kDa subunit family.UniRule annotation

Phylogenomic databases

eggNOGiCOG0377.
HOGENOMiHOG000228249.
KOiK05582.
OMAiKKVGNES.
OrthoDBiEOG62K20C.

Family and domain databases

Gene3Di3.40.50.700. 1 hit.
HAMAPiMF_01356. NDH1_NuoB.
InterProiIPR006137. NADH_UbQ_OxRdtase-like_20kDa.
IPR006138. NADH_UQ_OxRdtase_20Kd_su.
[Graphical view]
PfamiPF01058. Oxidored_q6. 1 hit.
[Graphical view]
TIGRFAMsiTIGR01957. nuoB_fam. 1 hit.
PROSITEiPS01150. COMPLEX1_20K. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

A2CCP6-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MSVTPSIDAV RDLRAASCGP VGAPSVTSEL SENIILTSLD DLHNWARLSS
60 70 80 90 100
LWPLLYGTAC CFIEFAALIG SRFDFDRFGL VPRSSPRQAD LLIVAGTVTM
110 120 130 140 150
KMAPALVRLY EQMPEPKYVI AMGACTITGG MFSADSTTAV RGVDKLIPVD
160 170 180 190 200
LYLPGCPPRP EAIFDAVIKL RKKVGDESVS ERIKIAQTHR YFTVPHQMKR
210 220 230 240 250
VEPIVTGAYL SADTQKAALS PGAGLPMAAE LNTSEIDASP ASQPSSTYES
Length:250
Mass (Da):26,879
Last modified:February 20, 2007 - v1
Checksum:i37A2BD06379B2017
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000554 Genomic DNA. Translation: ABM79256.1.
RefSeqiWP_011827102.1. NC_008820.1.
YP_001018521.1. NC_008820.1.

Genome annotation databases

EnsemblBacteriaiABM79256; ABM79256; P9303_25251.
KEGGipmf:P9303_25251.
PATRICi23002609. VBIProMar17757_2590.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000554 Genomic DNA. Translation: ABM79256.1.
RefSeqiWP_011827102.1. NC_008820.1.
YP_001018521.1. NC_008820.1.

3D structure databases

ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi59922.P9303_25251.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiABM79256; ABM79256; P9303_25251.
KEGGipmf:P9303_25251.
PATRICi23002609. VBIProMar17757_2590.

Phylogenomic databases

eggNOGiCOG0377.
HOGENOMiHOG000228249.
KOiK05582.
OMAiKKVGNES.
OrthoDBiEOG62K20C.

Enzyme and pathway databases

BioCyciPMAR59922:GH54-2631-MONOMER.

Family and domain databases

Gene3Di3.40.50.700. 1 hit.
HAMAPiMF_01356. NDH1_NuoB.
InterProiIPR006137. NADH_UbQ_OxRdtase-like_20kDa.
IPR006138. NADH_UQ_OxRdtase_20Kd_su.
[Graphical view]
PfamiPF01058. Oxidored_q6. 1 hit.
[Graphical view]
TIGRFAMsiTIGR01957. nuoB_fam. 1 hit.
PROSITEiPS01150. COMPLEX1_20K. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: MIT 9303.

Entry informationi

Entry nameiNDHK_PROM3
AccessioniPrimary (citable) accession number: A2CCP6
Entry historyi
Integrated into UniProtKB/Swiss-Prot: December 16, 2008
Last sequence update: February 20, 2007
Last modified: April 1, 2015
This is version 58 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.