LOCUS NDHK_SPIOL 227 aa linear PLN 27-NOV-2024
DEFINITION RecName: Full=NAD(P)H-quinone oxidoreductase subunit K,
chloroplastic; AltName: Full=NAD(P)H dehydrogenase subunit K;
AltName: Full=NADH-plastoquinone oxidoreductase subunit K.
ACCESSION Q9M3M0
VERSION Q9M3M0.3
DBSOURCE UniProtKB: locus NDHK_SPIOL, accession Q9M3M0;
class: standard.
created: Aug 29, 2001.
sequence updated: Dec 16, 2008.
annotation updated: Nov 27, 2024.
xrefs: AJ400848.1, CAB88733.1, NP_054940.3
xrefs (non-sequence databases): AlphaFoldDB:Q9M3M0, SMR:Q9M3M0,
STRING:3562.Q9M3M0, GeneID:2715596, KEGG:soe:2715596,
InParanoid:Q9M3M0, OrthoDB:33762at2759, Proteomes:UP001155700,
GO:0009535, GO:0045271, GO:0051539, GO:0005506, GO:0008137,
GO:0048038, GO:0009060, GO:0015990, GO:0019684,
FunFam:3.40.50.12280:FF:000003, Gene3D:3.40.50.12280,
HAMAP:MF_01356, InterPro:IPR006137, InterPro:IPR006138,
NCBIfam:TIGR01957, PANTHER:PTHR11995, PANTHER:PTHR11995:SF14,
Pfam:PF01058, SUPFAM:SSF56770, PROSITE:PS01150
KEYWORDS 4Fe-4S; Chloroplast; Iron; Iron-sulfur; Membrane; Metal-binding;
NAD; NADP; Plastid; Plastoquinone; Quinone; Reference proteome;
Thylakoid; Translocase; Transport.
SOURCE chloroplast Spinacia oleracea (spinach)
ORGANISM Spinacia oleracea
Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae;
Pentapetalae; Caryophyllales; Chenopodiaceae; Chenopodioideae;
Anserineae; Spinacia.
REFERENCE 1 (residues 1 to 227)
AUTHORS Schmitz-Linneweber,C., Maier,R.M., Alcaraz,J.P., Cottet,A.,
Herrmann,R.G. and Mache,R.
TITLE The plastid chromosome of spinach (Spinacia oleracea): complete
nucleotide sequence and gene organization
JOURNAL Plant Mol Biol 45 (3), 307-315 (2001)
PUBMED 11292076
REMARK NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].;
STRAIN=cv. Geant d'hiver, and cv. Monatol
COMMENT On Dec 19, 2008 this sequence version replaced Q9M3M0.2.
[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. {ECO:0000255|HAMAP-Rule:MF_01356}.
[CATALYTIC ACTIVITY] Reaction=a plastoquinone + NADH + (n+1)
H(+)(in) = a plastoquinol + NAD(+) + n H(+)(out);
Xref=Rhea:RHEA:42608, Rhea:RHEA-COMP:9561, Rhea:RHEA-COMP:9562,
ChEBI:CHEBI:15378, ChEBI:CHEBI:17757, ChEBI:CHEBI:57540,
ChEBI:CHEBI:57945, ChEBI:CHEBI:62192;
Evidence={ECO:0000255|HAMAP-Rule:MF_01356}.
[CATALYTIC ACTIVITY] Reaction=a plastoquinone + NADPH + (n+1)
H(+)(in) = a plastoquinol + NADP(+) + n H(+)(out);
Xref=Rhea:RHEA:42612, Rhea:RHEA-COMP:9561, Rhea:RHEA-COMP:9562,
ChEBI:CHEBI:15378, ChEBI:CHEBI:17757, ChEBI:CHEBI:57783,
ChEBI:CHEBI:58349, ChEBI:CHEBI:62192;
Evidence={ECO:0000255|HAMAP-Rule:MF_01356}.
[COFACTOR] Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
Evidence={ECO:0000255|HAMAP-Rule:MF_01356}; Note=Binds 1 [4Fe-4S]
cluster. {ECO:0000255|HAMAP-Rule:MF_01356}.
[SUBUNIT] NDH is composed of at least 16 different subunits, 5 of
which are encoded in the nucleus.
{ECO:0000255|HAMAP-Rule:MF_01356}.
[SUBCELLULAR LOCATION] Plastid, chloroplast thylakoid membrane
{ECO:0000255|HAMAP-Rule:MF_01356}; Peripheral membrane protein
{ECO:0000255|HAMAP-Rule:MF_01356}; Stromal side
{ECO:0000255|HAMAP-Rule:MF_01356}.
[SIMILARITY] Belongs to the complex I 20 kDa subunit family.
{ECO:0000255|HAMAP-Rule:MF_01356}.
[SEQUENCE CAUTION] Sequence=CAB88733.1; Type=Erroneous initiation;
Evidence={ECO:0000305}.
FEATURES Location/Qualifiers
source 1..227
/organism="Spinacia oleracea"
/organelle="plastid:chloroplast"
/db_xref="taxon:3562"
gene 1..227
/gene="ndhK"
Protein 1..227
/product="NAD(P)H-quinone oxidoreductase subunit K,
chloroplastic"
/EC_number="7.1.1.-"
/note="NAD(P)H dehydrogenase subunit K; NADH-plastoquinone
oxidoreductase subunit K"
/UniProtKB_evidence="Inferred from homology"
Region 1..227
/region_name="Mature chain"
/note="NAD(P)H-quinone oxidoreductase subunit K,
chloroplastic. /id=PRO_0000118755."
Region 1..227
/region_name="ndhK"
/note="NADH dehydrogenase subunit K; CHL00023"
/db_xref="CDD:214337"
ORIGIN
1 mnsiefplld qiaqnsvist tsndlsnwsr lsslwpllyg tsccfiefas ligsrfdfdr
61 yglvpraspr qadliltagt vtmkmapsll rlyeqmpepk yviamgacti tggmfstdsy
121 stvrgvdkli pvdvylpgcp pkpeavidai tklrkkisre iyedriksqp knrcftinhk
181 frvgrsihtg nydqallyky kspstseipp etffkyknaa ssrelvn
//