Q2QD36 (NU1C_CUCSA) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
NAD(P)H-quinone oxidoreductase subunit 1, chloroplastic
EC=1.6.5.-

Alternative name(s):
NAD(P)H dehydrogenase subunit 1
Short name=NDH subunit 1
NADH-plastoquinone oxidoreductase subunit 1

Gene names

Name:	ndhA
Ordered Locus Names:	CsCp110

Encoded on

Plastid; Chloroplast

Organism

Cucumis sativus (Cucumber)

Taxonomic identifier

3659 [NCBI]

Taxonomic lineage

Eukaryota › Viridiplantae › Streptophyta › Embryophyta › Tracheophyta › Spermatophyta › Magnoliophyta › eudicotyledons › core eudicotyledons › rosids › fabids › Cucurbitales › Cucurbitaceae › Benincaseae › Cucumis

Protein attributes

Sequence length	363 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

Function	NDH shuttles electrons from NAD(P)H:plastoquinone, via FMN and iron-sulfur (Fe-S) centers, to quinones in the photosynthetic chain and possibly in a chloroplast respiratory 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 By similarity. HAMAP MF_01350
Catalytic activity	NAD(P)H + plastoquinone = NAD(P)+ + plastoquinol. HAMAP MF_01350
Subunit structure	NDH is composed of at least 16 different subunits, 5 of which are encoded in the nucleus By similarity.
Subcellular location	Plastid › chloroplast thylakoid membrane; Multi-pass membrane protein By similarity HAMAP MF_01350.
Sequence similarities	Belongs to the complex I subunit 1 family.
Sequence caution	The sequence CAJ00814.1 differs from that shown. Reason: Frameshift at several positions.

Ontologies

Keywords
Cellular component	Chloroplast Membrane Plastid Thylakoid
Domain	Transmembrane Transmembrane helix
Ligand	NAD NADP Plastoquinone
Molecular function	Oxidoreductase
PTM	Quinone
Gene Ontology (GO)
Cellular component	chloroplast thylakoid membrane Inferred from electronic annotation. Source: UniProtKB-SubCell integral to membrane Inferred from electronic annotation. Source: UniProtKB-KW
Molecular function	oxidoreductase activity Inferred from electronic annotation. Source: UniProtKB-KW quinone 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
	Chain	1 – 363	363	NAD(P)H-quinone oxidoreductase subunit 1, chloroplastic HAMAP MF_01350		PRO_0000240018
Regions
	Transmembrane	28 – 48	21	Helical; Potential
	Transmembrane	98 – 118	21	Helical; Potential
	Transmembrane	127 – 147	21	Helical; Potential
	Transmembrane	248 – 268	21	Helical; Potential
	Transmembrane	300 – 320	21	Helical; Potential
	Transmembrane	343 – 363	21	Helical; Potential

Sequences

	Sequence		Length	Mass (Da)
	Q2QD36 [UniParc]. Last modified January 24, 2006. Version 1. Checksum: 35B77D5AC3D25A1C	FASTA	363	40,467
	10 20 30 40 50 60 MIIDTSQVQD IHSFSRLEFL KEFYGILWVL VPILTTVLGI TIGVLVIVWL EREISAGIQQ 70 80 90 100 110 120 RIGPEYAGPL GVLQALADGT KLLFKENLLP SRGDTRLFSI GPSIAVISIL LSYSVIPFGY 130 140 150 160 170 180 RLVLADLPIG VFLWIAISSV APIGLLMSGY GSNNKYSFLG GLRAAAQSIS YEIPLTLCVL 190 200 210 220 230 240 SISLLSNSSS TVDIVEAQSK YGFWGWNLWR QPIGFVIFLI SSLAECERLP FDLPEAEEEL 250 260 270 280 290 300 VAGYQTEYSG IKFGLFYVAS YLNLLVSSLF VTVLYLGGWD ISIPYILGYE LFEINKVYEV 310 320 330 340 350 360 FGMTISIFIT LAKTYLFLFI SIATRWTLPR LRIDQLLNLG WKFLLPISLG NLLLTTSFQL FSL

References

[1]	"Complete sequence and organization of the cucumber (Cucumis sativus L. cv. Baekmibaekdadagi) chloroplast genome." Kim J.-S., Jung J.D., Lee J.-A., Park H.-W., Oh K.-H., Jeong W.J., Choi D.-W., Liu J.R., Cho K.Y. Plant Cell Rep. 25:334-340(2006) [PubMed: 16362300] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: cv. Baekmibaekdadagi.
[2]	"The complete structure of the cucumber (Cucumis sativus L.) chloroplast genome: its composition and comparative analysis." Plader W.W., Yukawa Y., Sugiura M., Malepszy S. Cell. Mol. Biol. Lett. 12:584-594(2007) [PubMed: 17607527] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: cv. Borszczagowski.
[3]	"Sequencing cucumber (Cucumis sativus L.) chloroplast genomes identifies differences between chilling-tolerant and -susceptible cucumber lines." Chung S.-M., Gordon V.S., Staub J.E. Genome 50:215-225(2007) [PubMed: 17546086] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: cv. Chipper and cv. Gy14.

Cross-references

Sequence databases
EMBL GenBank DDBJ	DQ119058 Genomic DNA. Translation: AAZ94703.1. AJ970307 Genomic DNA. Translation: CAJ00814.1. Frameshift. DQ865975 Genomic DNA. Translation: ABI97468.1. DQ865976 Genomic DNA. Translation: ABI98799.1.
RefSeq	YP_247655.1. NC_007144.1.
3D structure databases
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	3429252.
Phylogenomic databases
ProtClustDB	CHL00032.
Family and domain databases
HAMAP	MF_01350. NDH1_NuoH. [Tree]
InterPro	IPR001694. NADH_UbQ_OxRdtase_su1/FPO. IPR018086. NADH_UbQ_OxRdtase_su1_CS. [Graphical view]
PANTHER	PTHR11432. Resp_NADH_DH_1. 1 hit.
Pfam	PF00146. NADHdh. 1 hit. [Graphical view]
PROSITE	PS00667. COMPLEX1_ND1_1. 1 hit. PS00668. COMPLEX1_ND1_2. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

NU1C_CUCSA

Accession

Primary (citable) accession number: Q2QD36
Secondary accession number(s): A5J1Y8, Q4VZL3

Entry history

Integrated into UniProtKB/Swiss-Prot:	June 13, 2006
Last sequence update:	January 24, 2006
Last modified:	June 28, 2011
This is version 37 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Plant Protein Annotation Program