Reviewed, UniProtKB/Swiss-Prot Q42599 (NDUS8_ARATH)

Names and origin

Protein names

Recommended name:
    NADH dehydrogenase [ubiquinone] iron-sulfur protein 8, mitochondrial
    EC=1.6.5.3
    EC=1.6.99.3
Alternative name(s):
    NADH-ubiquinone oxidoreductase 23 kDa subunit
    Complex I-23kD
      Short name=CI-23kD
    Complex I-28.5kD
      Short name=CI-28.5kD

Gene names

Name:	TYKY
Ordered Locus Names:	At1g79010
ORF Names:	YUP8H12R_21, YUP8H12R.37

Organism

Arabidopsis thaliana (Mouse-ear cress) [Complete proteome]

Taxonomic identifier

3702 [NCBI]

Taxonomic lineage

Eukaryota › Viridiplantae › Streptophyta › Embryophyta › Tracheophyta › Spermatophyta › Magnoliophyta › eudicotyledons › core eudicotyledons › rosids › malvids › Brassicales › Brassicaceae › Arabidopsis

Protein attributes

Sequence length	222 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. May donate electrons to ubiquinone.
Catalytic activity	NADH + ubiquinone = NAD+ + ubiquinol. NADH + acceptor = NAD+ + reduced acceptor.
Cofactor	Binds 2 4Fe-4S clusters per subunit By similarity.
Subunit structure	Complex I is composed of about 40 different subunits.
Subcellular location	Mitochondrion Probable Ref.5.
Sequence similarities	Belongs to the complex I 23 kDa subunit family. Contains 2 4Fe-4S ferredoxin-type domains.

Ontologies

Keywords
Biological process	Electron transport Respiratory chain Transport
Cellular component	Mitochondrion
Domain	Repeat Transit peptide
Ligand	4Fe-4S Iron Iron-sulfur Metal-binding NAD Ubiquinone
Molecular function	Oxidoreductase
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	electron transport chain Inferred from electronic annotation. Source: UniProtKB-KW transport Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	mitochondrion Ref.5 Inferred from direct assay. Source: TAIR respiratory chain complex I Inferred from direct assay. Source: TAIR
Molecular function	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
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Transit peptide	1 – ?		Mitochondrion By similarity
	Chain	? – 222		NADH dehydrogenase [ubiquinone] iron-sulfur protein 8, mitochondrial		PRO_0000020016
Regions
	Domain	114 – 143	30	4Fe-4S ferredoxin-type 1
	Domain	153 – 182	30	4Fe-4S ferredoxin-type 2
Sites
	Metal binding	123	1	Iron-sulfur 1 (4Fe-4S) By similarity
	Metal binding	126	1	Iron-sulfur 1 (4Fe-4S) By similarity
	Metal binding	129	1	Iron-sulfur 1 (4Fe-4S) By similarity
	Metal binding	133	1	Iron-sulfur 2 (4Fe-4S) By similarity
	Metal binding	162	1	Iron-sulfur 2 (4Fe-4S) By similarity
	Metal binding	165	1	Iron-sulfur 2 (4Fe-4S) By similarity
	Metal binding	168	1	Iron-sulfur 2 (4Fe-4S) By similarity
	Metal binding	172	1	Iron-sulfur 1 (4Fe-4S) By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q42599-1 [UniParc]. Last modified November 1, 1996. Version 1. Checksum: 7C1F2264B0D0631B	FASTA	222	25,503
	10 20 30 40 50 60 MASILARRSL NTLRARHLVL SGQALQGSHL SRLQSRGISY GSNKDDEEAE QLSKEISKDW 70 80 90 100 110 120 NTVFERSINT LFLTEMVRGL SLTLKYFFDP KVTINYPFEK GPLSPRFRGE HALRRYPTGE 130 140 150 160 170 180 ERCIACKLCE AVCPAQAITI EAEEREDGSR RTTRYDIDMT KCIYCGFCQE ACPVDAIVEG 190 200 210 220 PNFEFATETH EELLYDKEKL LENGDRWETE IAENLRSESL YR

References

[1]	"The 28.5-kDa iron-sulfur protein of mitochondrial complex I is encoded in the nucleus in plants." Schmidt-Bleek K., Heiser V., Thieck O., Brennicke A., Grohmann L. Mol. Gen. Genet. 253:448-454(1997) [PubMed: 9037104] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA]. Strain: cv. C24.
[2]	"Sequence and analysis of chromosome 1 of the plant Arabidopsis thaliana." Theologis A., Ecker J.R., Palm C.J., Federspiel N.A., Kaul S., White O., Alonso J., Altafi H., Araujo R., Bowman C.L., Brooks S.Y., Buehler E., Chan A., Chao Q., Chen H., Cheuk R.F., Chin C.W., Chung M.K. , Conn L., Conway A.B., Conway A.R., Creasy T.H., Dewar K., Dunn P., Etgu P., Feldblyum T.V., Feng J.-D., Fong B., Fujii C.Y., Gill J.E., Goldsmith A.D., Haas B., Hansen N.F., Hughes B., Huizar L., Hunter J.L., Jenkins J., Johnson-Hopson C., Khan S., Khaykin E., Kim C.J., Koo H.L., Kremenetskaia I., Kurtz D.B., Kwan A., Lam B., Langin-Hooper S., Lee A., Lee J.M., Lenz C.A., Li J.H., Li Y.-P., Lin X., Liu S.X., Liu Z.A., Luros J.S., Maiti R., Marziali A., Militscher J., Miranda M., Nguyen M., Nierman W.C., Osborne B.I., Pai G., Peterson J., Pham P.K., Rizzo M., Rooney T., Rowley D., Sakano H., Salzberg S.L., Schwartz J.R., Shinn P., Southwick A.M., Sun H., Tallon L.J., Tambunga G., Toriumi M.J., Town C.D., Utterback T., Van Aken S., Vaysberg M., Vysotskaia V.S., Walker M., Wu D., Yu G., Fraser C.M., Venter J.C., Davis R.W. Nature 408:816-820(2000) [PubMed: 11130712] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: cv. Columbia.
[3]	"Empirical analysis of transcriptional activity in the Arabidopsis genome." Yamada K., Lim J., Dale J.M., Chen H., Shinn P., Palm C.J., Southwick A.M., Wu H.C., Kim C.J., Nguyen M., Pham P.K., Cheuk R.F., Karlin-Newmann G., Liu S.X., Lam B., Sakano H., Wu T., Yu G. , Miranda M., Quach H.L., Tripp M., Chang C.H., Lee J.M., Toriumi M.J., Chan M.M., Tang C.C., Onodera C.S., Deng J.M., Akiyama K., Ansari Y., Arakawa T., Banh J., Banno F., Bowser L., Brooks S.Y., Carninci P., Chao Q., Choy N., Enju A., Goldsmith A.D., Gurjal M., Hansen N.F., Hayashizaki Y., Johnson-Hopson C., Hsuan V.W., Iida K., Karnes M., Khan S., Koesema E., Ishida J., Jiang P.X., Jones T., Kawai J., Kamiya A., Meyers C., Nakajima M., Narusaka M., Seki M., Sakurai T., Satou M., Tamse R., Vaysberg M., Wallender E.K., Wong C., Yamamura Y., Yuan S., Shinozaki K., Davis R.W., Theologis A., Ecker J.R. Science 302:842-846(2003) [PubMed: 14593172] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]. Strain: cv. Columbia.
[4]	"Full-length cDNA from Arabidopsis thaliana." Brover V.V., Troukhan M.E., Alexandrov N.A., Lu Y.-P., Flavell R.B., Feldmann K.A. Submitted (MAR-2002) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
[5]	"Experimental analysis of the Arabidopsis mitochondrial proteome highlights signaling and regulatory components, provides assessment of targeting prediction programs, and indicates plant-specific mitochondrial proteins." Heazlewood J.L., Tonti-Filippini J.S., Gout A.M., Day D.A., Whelan J., Millar A.H. Plant Cell 16:241-256(2004) [PubMed: 14671022] [Abstract] Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS], SUBCELLULAR LOCATION [LARGE SCALE ANALYSIS].
+	Additional computationally mapped references.

Cross-references

Sequence databases
EMBL GenBank DDBJ	X84318 mRNA. Translation: CAA59061.1. AC002986 Genomic DNA. Translation: AAC17054.1. AY048241 mRNA. Translation: AAK82503.1. AY072622 mRNA. Translation: AAL62013.1. AY088308 mRNA. Translation: AAM65847.1.
IPI	IPI00539763.
PIR	S52380.
RefSeq	NP_178022.1.
UniGene	At.24660 Rra.366 Rsa.9070
3D structure databases
SMR	Q42599. Positions 96-212.
ModBase	Search...
Protein-protein interaction databases
STRING	Q42599.
Proteomic databases
PRIDE	Q42599.
Genome annotation databases
GeneID	844242.
GenomeReviews	Gene locus AT1G79010 in contig CT485782_GR.
KEGG	ath:AT1G79010.
NMPDR	fig|3702.1.peg.7463.
Organism-specific databases
GeneFarm	1821. 140.
TAIR	At1g79010.
Phylogenomic databases
HOGENOM	HBG724359.
InParanoid	Q42599.
OMA	EMVRGLM.
PhylomeDB	Q42599.
Enzyme and pathway databases
BioCyc	MetaCyc:AT1G79010-MONOMER.
BRENDA	1.6.5.3. 302. 1.6.99.3. 302.
Gene expression databases
ArrayExpress	Q42599.
Genevestigator	Q42599.
GermOnline	AT1G79010. Arabidopsis thaliana.
Family and domain databases
InterPro	IPR017896. 4Fe4S_Fe-S-bd. IPR017900. 4Fe4S_Fe_S_CS. IPR009051. Helical_ferredxn. IPR010226. NADH_quinone_OxRdtase_chainI. [Graphical view]
TIGRFAMs	TIGR01971. NuoI. 1 hit.
PROSITE	PS00198. 4FE4S_FER_1. 2 hits. PS51379. 4FE4S_FER_2. 2 hits. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

NDUS8_ARATH

Accession

Primary (citable) accession number: Q42599

Entry history

Integrated into UniProtKB/Swiss-Prot:	December 15, 1998
Last sequence update:	November 1, 1996
Last modified:	February 9, 2010
This is version 89 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

PPAP (Plant Proteome Annotation Project)