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Protein

NAD(P)H-quinone oxidoreductase subunit 2, organellar chromatophore

Gene

ndhB

Organism
Paulinella chromatophora
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

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Oxidoreductase

Keywords - Ligandi

NAD, NADP, Plastoquinone

Names & Taxonomyi

Protein namesi
Recommended name:
NAD(P)H-quinone oxidoreductase subunit 2, organellar chromatophoreUniRule annotation (EC:1.6.5.-UniRule annotation)
Alternative name(s):
NAD(P)H dehydrogenase, subunit 2UniRule annotation
NADH-plastoquinone oxidoreductase subunit 2UniRule annotation
Gene namesi
Name:ndhBUniRule annotation
Ordered Locus Names:PCC_0740
Encoded oniPlastid; Organellar chromatophore
OrganismiPaulinella chromatophora
Taxonomic identifieri39717 [NCBI]
Taxonomic lineageiEukaryotaRhizariaCercozoaImbricateaSilicofiloseaEuglyphidaPaulinellidaePaulinella

Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transmembranei6 – 26HelicalUniRule annotationAdd BLAST21
Transmembranei43 – 63HelicalUniRule annotationAdd BLAST21
Transmembranei80 – 100HelicalUniRule annotationAdd BLAST21
Transmembranei107 – 127HelicalUniRule annotationAdd BLAST21
Transmembranei133 – 153HelicalUniRule annotationAdd BLAST21
Transmembranei168 – 188HelicalUniRule annotationAdd BLAST21
Transmembranei210 – 230HelicalUniRule annotationAdd BLAST21
Transmembranei242 – 262HelicalUniRule annotationAdd BLAST21
Transmembranei276 – 296HelicalUniRule annotationAdd BLAST21
Transmembranei304 – 324HelicalUniRule annotationAdd BLAST21
Transmembranei332 – 352HelicalUniRule annotationAdd BLAST21
Transmembranei376 – 396HelicalUniRule annotationAdd BLAST21
Transmembranei411 – 431HelicalUniRule annotationAdd BLAST21
Transmembranei464 – 484HelicalUniRule annotationAdd BLAST21

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Membrane, Organellar chromatophore, Plastid, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00003442841 – 512NAD(P)H-quinone oxidoreductase subunit 2, organellar chromatophoreAdd BLAST512

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

Family & Domainsi

Sequence similaritiesi

Belongs to the complex I subunit 2 family.UniRule annotation

Keywords - Domaini

Transmembrane, Transmembrane helix

Family and domain databases

HAMAPiMF_00445. NDH1_NuoN_1. 1 hit.
InterProiIPR010096. NADH-Q_OxRdtase_suN/2.
IPR001750. ND/Mrp_mem.
[Graphical view]
PfamiPF00361. Proton_antipo_M. 1 hit.
[Graphical view]
TIGRFAMsiTIGR01770. NDH_I_N. 1 hit.

Sequencei

Sequence statusi: Complete.

B1X5D6-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MENSGLLALP LNAATIVPEG AILLALLSSL LVDLAGEKTA SRWVPPICYA
60 70 80 90 100
GLGSALILLA SQWNSTLSPS FLGAFLADNL AIAFRAIIAT STLFSLMISW
110 120 130 140 150
RYVERSGAPM GEYAAILLAA TLGAMFLCGS TDLVSIFVSL ETLSVSSYLL
160 170 180 190 200
AGYMKQDARS SEAALKYLLV GSATAAVFLY GASLLYGLTG GSTNLDAVAL
210 220 230 240 250
ALQSSDTPVA ALALVFVLAT VAFKIAAVPF HQWTPDVYEG APTPIVAFLS
260 270 280 290 300
VGSKTAGFAL ALRLLVGCFE SFDIQWKFLF SLLAILSMVL GNIVALSQTS
310 320 330 340 350
MKRMLAYSSI GQAGFVMIGL VCGTEDGFAA MILYLATYLF MNMGAFACVI
360 370 380 390 400
LFSIRTGSDL IADYAGLYQK DPLVTIGLSL CLLSLGGIPP MLGFFGKIYL
410 420 430 440 450
FFAGWADHQY LLVVTGLITS VVSIYYYISV IRMMVVIEPK EASDVVKSYA
460 470 480 490 500
AVNWNIPGLN PLRVALLVCV IVTGIGGIFS NPLFQWANSA VAGTPILQKV
510
IVTALGTTGT IS
Length:512
Mass (Da):54,053
Last modified:May 20, 2008 - v1
Checksum:i8C927D63F7E8FFBD
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000815 Genomic DNA. Translation: ACB43155.1.
RefSeqiYP_002049365.1. NC_011087.1.

Genome annotation databases

EnsemblProtistsiACB43155; ACB43155; PCC_0740.
GeneIDi6481593.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000815 Genomic DNA. Translation: ACB43155.1.
RefSeqiYP_002049365.1. NC_011087.1.

3D structure databases

ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblProtistsiACB43155; ACB43155; PCC_0740.
GeneIDi6481593.

Family and domain databases

HAMAPiMF_00445. NDH1_NuoN_1. 1 hit.
InterProiIPR010096. NADH-Q_OxRdtase_suN/2.
IPR001750. ND/Mrp_mem.
[Graphical view]
PfamiPF00361. Proton_antipo_M. 1 hit.
[Graphical view]
TIGRFAMsiTIGR01770. NDH_I_N. 1 hit.
ProtoNetiSearch...

Entry informationi

Entry nameiNU2C_PAUCH
AccessioniPrimary (citable) accession number: B1X5D6
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 22, 2008
Last sequence update: May 20, 2008
Last modified: December 9, 2015
This is version 30 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)

Miscellaneousi

Documents

  1. SIMILARITY comments
    Index of protein domains and families

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 one 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.