ID   NU1M_SMICR              Reviewed;         318 AA.
AC   O78715;
DT   30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1998, sequence version 1.
DT   25-MAY-2022, entry version 67.
DE   RecName: Full=NADH-ubiquinone oxidoreductase chain 1;
DE            EC=7.1.1.2;
DE   AltName: Full=NADH dehydrogenase subunit 1;
GN   Name=MT-ND1; Synonyms=MTND1, NADH1, ND1;
OS   Sminthopsis crassicaudata (Fat-tailed dunnart) (Phascogale crassicaudata).
OG   Mitochondrion.
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC   Metatheria; Dasyuromorphia; Dasyuridae; Sminthopsis.
OX   NCBI_TaxID=9301;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   TISSUE=Liver;
RX   PubMed=9732458; DOI=10.1007/pl00006389;
RA   Cao Y., Janke A., Waddell P.J., Westerman M., Takenaka O., Murata S.,
RA   Okada N., Paeaebo S., Hasegawa M.;
RT   "Conflict among individual mitochondrial proteins in resolving the
RT   phylogeny of eutherian orders.";
RL   J. Mol. Evol. 47:307-322(1998).
CC   -!- FUNCTION: Core subunit of the mitochondrial membrane respiratory chain
CC       NADH dehydrogenase (Complex I) that is believed to belong to the
CC       minimal assembly required for catalysis. Complex I functions in the
CC       transfer of electrons from NADH to the respiratory chain. The immediate
CC       electron acceptor for the enzyme is believed to be ubiquinone (By
CC       similarity). {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a ubiquinone + 5 H(+)(in) + NADH = a ubiquinol + 4 H(+)(out) +
CC         NAD(+); Xref=Rhea:RHEA:29091, Rhea:RHEA-COMP:9565, Rhea:RHEA-
CC         COMP:9566, ChEBI:CHEBI:15378, ChEBI:CHEBI:16389, ChEBI:CHEBI:17976,
CC         ChEBI:CHEBI:57540, ChEBI:CHEBI:57945; EC=7.1.1.2;
CC   -!- SUBCELLULAR LOCATION: Mitochondrion inner membrane {ECO:0000250};
CC       Multi-pass membrane protein {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the complex I subunit 1 family. {ECO:0000305}.
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DR   EMBL; AB011232; BAA32124.1; -; Genomic_DNA.
DR   AlphaFoldDB; O78715; -.
DR   SMR; O78715; -.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005743; C:mitochondrial inner membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0070469; C:respirasome; IEA:UniProtKB-KW.
DR   GO; GO:0008137; F:NADH dehydrogenase (ubiquinone) activity; IEA:UniProtKB-EC.
DR   HAMAP; MF_01350; NDH1_NuoH; 1.
DR   InterPro; IPR001694; NADH_UbQ_OxRdtase_su1/FPO.
DR   InterPro; IPR018086; NADH_UbQ_OxRdtase_su1_CS.
DR   PANTHER; PTHR11432; PTHR11432; 1.
DR   Pfam; PF00146; NADHdh; 1.
DR   PROSITE; PS00667; COMPLEX1_ND1_1; 1.
DR   PROSITE; PS00668; COMPLEX1_ND1_2; 1.
PE   3: Inferred from homology;
KW   Electron transport; Membrane; Mitochondrion; Mitochondrion inner membrane;
KW   NAD; Respiratory chain; Translocase; Transmembrane; Transmembrane helix;
KW   Transport; Ubiquinone.
FT   CHAIN           1..318
FT                   /note="NADH-ubiquinone oxidoreductase chain 1"
FT                   /id="PRO_0000117479"
FT   TRANSMEM        3..23
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        68..88
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        100..120
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        136..156
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        172..192
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        222..242
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        253..273
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        294..314
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   318 AA;  35710 MW;  F7C94B9E7315FF81 CRC64;
     MFILNLLLYI IPILLAVAFL TLIERKVLGY MQFRKGPNIV GPYGLLQPFA DAVKLFTKEP
     LRPLTSSILM FILAPILALS IALTIWTPLP MPNSLLDLNL GLLFILSLSG LSVYSILWSG
     WASNSKYALI GALRAVAQTI SYEVSLAIIL LSVMLINGSF TLKTLSTTQE NWWLIITTWP
     LAMMWYISTL AETNRAPFDL TEGESELVSG FNVDYAAGPF AMFFLAEYAN IIAMNAITTI
     LFMGSSLTLN LTHIDSITFM MKTLLLTMAF LWVRASYPRF RYDQLMHLLW KNFLPLTLAL
     CLWYISLPIA LSCIPPQL