ID   NU1M_TACAC              Reviewed;         318 AA.
AC   O78714;
DT   30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1998, sequence version 1.
DT   25-MAY-2022, entry version 68.
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   Tachyglossus aculeatus aculeatus (Southeast Australian short-beaked
OS   echidna).
OG   Mitochondrion.
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC   Monotremata; Tachyglossidae; Tachyglossus.
OX   NCBI_TaxID=49271;
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; AB011231; BAA32123.1; -; Genomic_DNA.
DR   AlphaFoldDB; O78714; -.
DR   SMR; O78714; -.
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_0000117483"
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        144..164
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        171..191
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        231..251
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        254..276
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        293..313
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   318 AA;  35931 MW;  FABBDB5AA1B56DEE CRC64;
     MFLINLLLLI VPVLLAVAFL TLIERKILGY MQFRKGPNIV GPHGLLQPIA DAVKLFIKEP
     LRPLTSSIYM FILAPILALS LALTIWVPLP MPLPLIDLNL GLLFILSVSG LSVYSILWSG
     WASNSKYALT GALRAVAQTI SYEVTLAIIL LSIMLINGSF TLTTLNLTQE FMWLVVPTWP
     LMLMWFISTL AETNRAPFDL TEGESELVSG FNVEYAAGPF AMFFLAEYAN IIIMNALTVI
     LFFGTYHLIF LPELSTTNFM VKTMLLTSLF LWVRASYPRF RYDQLMHLLW KNFLPITLVT
     CLWYIMFPTM LSGTPPQM