Reviewed, UniProtKB/Swiss-Prot Q66HF1 (NDUS1_RAT)

Names and origin

Protein names

Recommended name:
    NADH-ubiquinone oxidoreductase 75 kDa subunit, mitochondrial
    EC=1.6.5.3
    EC=1.6.99.3

Gene names

Name:

Ndufs1

Organism

Rattus norvegicus (Rat)

Taxonomic identifier

10116 [NCBI]

Taxonomic lineage

Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Glires › Rodentia › Sciurognathi › Muroidea › Muridae › Murinae › Rattus

Protein attributes

Sequence length	727 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Evidence at protein level.

General annotation (Comments)

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 By similarity. This is the largest subunit of complex I and it is a component of the iron-sulfur (IP) fragment of the enzyme. It may form part of the active site crevice where NADH is oxidized By similarity.
Catalytic activity	NADH + ubiquinone = NAD+ + ubiquinol. NADH + acceptor = NAD+ + reduced acceptor.
Cofactor	Binds 1 2Fe-2S cluster per subunit By similarity. Binds 2 4Fe-4S clusters per subunit By similarity.
Subunit structure	Complex I is composed of 45 different subunits By similarity.
Subcellular location	Mitochondrion inner membrane By similarity. Note: Matrix and cytoplasmic side of the mitochondrial inner membrane By similarity.
Sequence similarities	Belongs to the complex I 75 kDa subunit family. Contains 1 2Fe-2S ferredoxin-type domain.

Ontologies

Keywords
Biological process	Electron transport Respiratory chain Transport
Cellular component	Membrane Mitochondrion Mitochondrion inner membrane
Domain	Transit peptide
Ligand	2Fe-2S 4Fe-4S Iron Iron-sulfur Metal-binding NAD Ubiquinone
Molecular function	Oxidoreductase
PTM	Acetylation
Technical term	Direct protein sequencing
Gene Ontology (GO)
Biological process	ATP metabolic process Inferred from sequence or structural similarity. Source: UniProtKB ATP synthesis coupled electron transport Inferred from electronic annotation. Source: InterPro apoptosis Inferred from sequence or structural similarity. Source: UniProtKB oxygen and reactive oxygen species metabolic process Inferred from sequence or structural similarity. Source: UniProtKB regulation of mitochondrial membrane potential Inferred from sequence or structural similarity. Source: UniProtKB transport Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	mitochondrial intermembrane space Inferred from sequence or structural similarity. Source: UniProtKB mitochondrial respiratory chain complex I Inferred from sequence or structural similarity. Source: UniProtKB
Molecular function	2 iron, 2 sulfur cluster binding Inferred from electronic annotation. Source: UniProtKB-KW 4 iron, 4 sulfur cluster binding Inferred from electronic annotation. Source: UniProtKB-KW NADH dehydrogenase (ubiquinone) activity Inferred from electronic annotation. Source: EC electron carrier activity Inferred from electronic annotation. Source: InterPro iron ion binding Inferred from electronic annotation. Source: UniProtKB-KW protein binding Inferred from sequence or structural similarity. Source: UniProtKB
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Transit peptide	1 – 23	23	Mitochondrion By similarity
	Chain	24 – 727	704	NADH-ubiquinone oxidoreductase 75 kDa subunit, mitochondrial		PRO_0000271388
Regions
	Domain	30 – 108	79	2Fe-2S ferredoxin-type
Sites
	Metal binding	64	1	Iron-sulfur (2Fe-2S) By similarity
	Metal binding	75	1	Iron-sulfur (2Fe-2S) By similarity
	Metal binding	78	1	Iron-sulfur (2Fe-2S) By similarity
	Metal binding	92	1	Iron-sulfur (2Fe-2S) By similarity
	Metal binding	124	1	Iron-sulfur 2 (4Fe-4S); via pros nitrogen By similarity
	Metal binding	128	1	Iron-sulfur 2 (4Fe-4S) By similarity
	Metal binding	131	1	Iron-sulfur 2 (4Fe-4S) By similarity
	Metal binding	137	1	Iron-sulfur 2 (4Fe-4S) By similarity
	Metal binding	176	1	Iron-sulfur 3 (4Fe-4S) By similarity
	Metal binding	179	1	Iron-sulfur 3 (4Fe-4S) By similarity
	Metal binding	182	1	Iron-sulfur 3 (4Fe-4S) By similarity
	Metal binding	226	1	Iron-sulfur 3 (4Fe-4S) By similarity
Amino acid modifications
	Modified residue	84	1	N6-acetyllysine By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q66HF1-1 [UniParc]. Last modified October 11, 2004. Version 1. Checksum: EDAC634B2697984A	FASTA	727	79,412
	10 20 30 40 50 60 MLRIPVKRAL IGLSKSPKGY VRSTGTAASN LIEVFVDGQS VMVEPGTTVL QACEKVGMQI 70 80 90 100 110 120 PRFCYHERLS VAGNCRMCLV EIEKAPKVVA ACAMPVMKGW NILTNSEKSK KAREGVMEFL 130 140 150 160 170 180 LANHPLDCPI CDQGGECDLQ DQSMMFGSDR SRFLEGKRAV EDKNIGPLVK TIMTRCIQCT 190 200 210 220 230 240 RCIRFASEIA GVDDLGTTGR GNDMQVGTYI EKMFMSELSG NIIDICPVGA LTSKPYAFTA 250 260 270 280 290 300 RPWETRKTES IDVMDAVGSN IVVSTRTGEV MRILPRMHED INEEWISDKT RFAYDGLKRQ 310 320 330 340 350 360 RLTEPMVRNE KGLLTYTSWE DALSRVAGML QSFEGKAVAA IAGGLVDAEA LVALKDLLNK 370 380 390 400 410 420 VDSDTLCTEE IFPNEGAGTD LRSNYLLNTT IAGVEEADVV LLVGTNPRFE APLFNARIRK 430 440 450 460 470 480 SWLHNDLKVA LIGSPVDLTY RYDHLGDSPK ILQDIASGNH EFSKVLNAAK KPMVVLGSSA 490 500 510 520 530 540 LQRDDGAAIL AAVSSIAQKI RVASGAAAEW KVMNILHRIA SQVAALDLGY KPGVEAIRKN 550 560 570 580 590 600 PPKLLFLLGA DGGCITRQDL PKDCFIVYQG HHGDVGAPIA DVILPGAAYT EKSATYVNTE 610 620 630 640 650 660 GRAQQTKVAV TPPGLAREDW KIIRALSEIA GITLPYDTLD QVRNRLGEVS PNLVRYDDVE 670 680 690 700 710 720 EANYFQQASE LAKLVDQEFL ADPLVPPQLT IKDFYMTDSI SRASQTMAKC VKAVTEGAQA VEEPSIC

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)." The MGC Project Team Genome Res. 14:2121-2127(2004) [PubMed: 15489334] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]. Tissue: Kidney.
[2]	Lubec G., Afjehi-Sadat L., Chen W.-Q. Submitted (APR-2007) to UniProtKB Cited for: PROTEIN SEQUENCE OF 185-200; 247-266; 429-441; 484-499; 519-528; 544-557 AND 625-643, MASS SPECTROMETRY. Strain: Sprague-Dawley. Tissue: Hippocampus and Spinal cord.

Cross-references

Sequence databases
EMBLGenBankDDBJ	BC081892 mRNA. Translation: AAH81892.1.
IPI	IPI00358033.
RefSeq	NP_001005550.1.
UniGene	Rn.1467
3D structure databases
ModBase	Search...
PTM databases
PhosphoSite	Q66HF1.
Proteomic databases
PRIDE	Q66HF1.
Genome annotation databases
Ensembl	ENSRNOG00000011849. Rattus norvegicus. [Contig view]
GeneID	301458.
KEGG	rno:301458.
NMPDR	fig|10116.3.peg.30141.
Organism-specific databases
RGD	1359670. Ndufs1.
Phylogenomic databases
HOVERGEN	Q66HF1.
OMA	Q66HF1. RMSSGVT.
Enzyme and pathway databases
BRENDA	1.6.5.3. 248. 1.6.99.3. 248.
Gene expression databases
ArrayExpress	Q66HF1.
Family and domain databases
InterPro	IPR001041. Ferredoxin. IPR006656. Mopterin_OxRdtase. IPR000283. NADH_UbQ_OxRdtase_75KDa_su_CS. IPR010228. NADH_UbQ_OxRdtase_Gsu. IPR019574. NADH_UbQ_OxRdtase_Gsu_4Fe4S-bd. IPR015405. NuoG_C. [Graphical view]
Pfam	PF09326. DUF1982. 1 hit. PF00111. Fer2. 1 hit. PF00384. Molybdopterin. 1 hit. PF10588. NADH-G_4Fe-4S_3. 1 hit. [Graphical view]
TIGRFAMs	TIGR01973. NuoG. 1 hit.
PROSITE	PS51085. 2FE2S_FER_2. 1 hit. PS00641. COMPLEX1_75K_1. 1 hit. PS00642. COMPLEX1_75K_2. 1 hit. PS00643. COMPLEX1_75K_3. 1 hit. [Graphical view]
ProtoNet	Search...
Other Resources
NextBio	648791.

Entry information

Entry name

NDUS1_RAT

Accession

Primary (citable) accession number: Q66HF1

Entry history

Integrated into UniProtKB/Swiss-Prot:	January 9, 2007
Last sequence update:	October 11, 2004
Last modified:	June 16, 2009
This is version 41 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HPI (Human Proteome Initiative)