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Protein

NADH dehydrogenase [ubiquinone] iron-sulfur protein 7, mitochondrial

Gene
N/A
Organism
Solanum tuberosum (Potato)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at transcript leveli

Functioni

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 (By similarity).By similarity

Catalytic activityi

NADH + ubiquinone + 5 H+(In) = NAD+ + ubiquinol + 4 H+(Out).
NADH + acceptor = NAD+ + reduced acceptor.

Cofactori

[4Fe-4S] clusterCuratedNote: Binds 1 [4Fe-4S] cluster.Curated

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi88 – 881Iron-sulfur (4Fe-4S)Sequence Analysis
Metal bindingi89 – 891Iron-sulfur (4Fe-4S)Sequence Analysis
Metal bindingi153 – 1531Iron-sulfur (4Fe-4S)Sequence Analysis
Metal bindingi183 – 1831Iron-sulfur (4Fe-4S)Sequence Analysis

GO - Molecular functioni

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

Keywords - Molecular functioni

Oxidoreductase

Keywords - Biological processi

Electron transport, Respiratory chain, Transport

Keywords - Ligandi

4Fe-4S, Iron, Iron-sulfur, Metal-binding, NAD, Ubiquinone

Names & Taxonomyi

Protein namesi
Recommended name:
NADH dehydrogenase [ubiquinone] iron-sulfur protein 7, mitochondrial (EC:1.6.5.3, EC:1.6.99.3)
Alternative name(s):
Complex I-20kD
Short name:
CI-20kD
NADH-ubiquinone oxidoreductase 20 kDa subunit
OrganismiSolanum tuberosum (Potato)
Taxonomic identifieri4113 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaeasteridslamiidsSolanalesSolanaceaeSolanoideaeSolaneaeSolanum
ProteomesiUP000011115: Unplaced

Subcellular locationi

GO - Cellular componenti

  1. mitochondrion Source: UniProtKB-SubCell
  2. respiratory chain Source: UniProtKB-KW
Complete GO annotation...

Keywords - Cellular componenti

Mitochondrion

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transit peptidei1 – 3131MitochondrionSequence AnalysisAdd
BLAST
Chaini32 – 213182NADH dehydrogenase [ubiquinone] iron-sulfur protein 7, mitochondrialPRO_0000020035Add
BLAST

Interactioni

Subunit structurei

Complex I is composed of about 45 different subunits. This is a component of the iron-sulfur (IP) fragment of the enzyme (By similarity).By similarity

Structurei

3D structure databases

ProteinModelPortaliQ43844.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the complex I 20 kDa subunit family.Curated

Keywords - Domaini

Transit peptide

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.

Sequence processingi: The displayed sequence is further processed into a mature form.

Q43844-1 [UniParc]FASTAAdd to Basket

« Hide

        10         20         30         40         50
MALIARNAKL LTGTAPFLQR AATIHTTLPS LSQQPASSPA TSGGAQPPSM
60 70 80 90 100
NTPAGISKPA EYVISKVDDL MNWARRGSIW PMTFGLACCA VEMMHAGAAR
110 120 130 140 150
YDFDRFGIIF RPSPRQSDVM IVAGTLTNKM APALRKVYDQ MPEPRWVISM
160 170 180 190 200
GSCANGGGYY HYSYAVVRGC DRIVPVDIYV PGCPPTAEAL LYGILQLQKK
210
INRRKDLLMW WTQ
Length:213
Mass (Da):23,396
Last modified:November 1, 1996 - v1
Checksum:i8047FAB323418FCB
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X96671 mRNA. Translation: CAA65451.1.
PIRiT07603.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X96671 mRNA. Translation: CAA65451.1.
PIRiT07603.

3D structure databases

ProteinModelPortaliQ43844.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

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. "The plant mitochondrial 22 kDa (PSST) subunit of respiratory chain complex I is encoded by a nuclear gene with enhanced transcript levels in flowers."
    Heiser V., Grohmann L., Brennicke A.
    Plant Mol. Biol. 31:1195-1204(1996) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [MRNA].
    Strain: cv. Desiree.
    Tissue: Leaf.

Entry informationi

Entry nameiNDUS7_SOLTU
AccessioniPrimary (citable) accession number: Q43844
Entry historyi
Integrated into UniProtKB/Swiss-Prot: November 1, 1997
Last sequence update: November 1, 1996
Last modified: January 7, 2015
This is version 81 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference 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.