ID   NDUS3_RECAM             Reviewed;         204 AA.
AC   O21271;
DT   30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-JAN-1998, sequence version 1.
DT   16-JUN-2009, entry version 54.
DE   RecName: Full=NADH-ubiquinone oxidoreductase subunit 9;
DE            EC=1.6.5.3;
DE            EC=1.6.99.3;
GN   Name=NAD9;
OS   Reclinomonas americana.
OG   Mitochondrion.
OC   Eukaryota; Jakobida; Histionidae; Reclinomonas.
OX   NCBI_TaxID=48483;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=ATCC 50394;
RX   MEDLINE=97311393; PubMed=9168110; DOI=10.1038/387493a0;
RA   Lang B.F., Burger G., O'Kelly C.J., Cedergren R., Golding G.B.,
RA   Lemieux C., Sankoff D., Turmel M., Gray M.W.;
RT   "An ancestral mitochondrial DNA resembling a eubacterial genome in
RT   miniature.";
RL   Nature 387:493-497(1997).
CC   -!- FUNCTION: Core subunit of the mitochondrial membrane respiratory
CC       chain NADH dehydrogenase (Complex I) that is believed to belong to
CC       the minimal assembly required for catalysis. Complex I functions
CC       in the transfer of electrons from NADH to the respiratory chain.
CC       The immediate electron acceptor for the enzyme is believed to be
CC       ubiquinone (By similarity).
CC   -!- CATALYTIC ACTIVITY: NADH + ubiquinone = NAD(+) + ubiquinol.
CC   -!- CATALYTIC ACTIVITY: NADH + acceptor = NAD(+) + reduced acceptor.
CC   -!- SUBUNIT: Complex I is composed of about 30 different subunits.
CC   -!- SUBCELLULAR LOCATION: Mitochondrion inner membrane (By
CC       similarity). Note=Matrix and cytoplasmic side of the mitochondrial
CC       inner membrane (By similarity).
CC   -!- SIMILARITY: Belongs to the complex I 30 kDa subunit family.
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DR   EMBL; AF007261; AAD11898.1; -; Genomic_DNA.
DR   PIR; S78165; S78165.
DR   RefSeq; NP_044783.1; -.
DR   GeneID; 801075; -.
DR   BRENDA; 1.6.5.3; 307247.
DR   BRENDA; 1.6.99.3; 307247.
DR   GO; GO:0005743; C:mitochondrial inner membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0070469; C:respiratory chain; IEA:UniProtKB-KW.
DR   GO; GO:0008137; F:NADH dehydrogenase (ubiquinone) activity; IEA:EC.
DR   GO; GO:0022900; P:electron transport chain; IEA:UniProtKB-KW.
DR   GO; GO:0006810; P:transport; IEA:UniProtKB-KW.
DR   InterPro; IPR010218; NADH_DH_csu.
DR   InterPro; IPR001268; NADH_UbQ_OxRdtase_30kDa_su.
DR   Pfam; PF00329; Complex1_30kDa; 1.
DR   ProDom; PD001581; Complex1_30K; 1.
DR   TIGRFAMs; TIGR01961; NuoC_fam; 1.
DR   PROSITE; PS00542; COMPLEX1_30K; 1.
PE   3: Inferred from homology;
KW   Electron transport; Membrane; Mitochondrion;
KW   Mitochondrion inner membrane; NAD; Oxidoreductase; Respiratory chain;
KW   Transport; Ubiquinone.
FT   CHAIN         1    204       NADH-ubiquinone oxidoreductase subunit 9.
FT                                /FTId=PRO_0000118649.
SQ   SEQUENCE   204 AA;  24239 MW;  8AA999B21913AEC6 CRC64;
     MKKQEQNQFL KEFGISLIKM FPKYIDKAIY SKGELTLHVK PTNLIALMKI LKNHTNCQFK
     SLSDLCAVDF PEKKERFEIV YNLLSVRYNS RIRVKTFVDE LTPVPSVTCL FQAAGWFERE
     VWDLFGVYFT NHPDLRRILT DYGFEGHPMR KDFPLTGYVE VRYDDEQKRV VTESLEMTQE
     FRSFNFTSPW EQIEISKPNI KEKK
//