ID   NU4M_DIDVI              Reviewed;         474 AA.
AC   P41308;
DT   01-FEB-1995, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1995, sequence version 1.
DT   25-MAY-2022, entry version 79.
DE   RecName: Full=NADH-ubiquinone oxidoreductase chain 4;
DE            EC=7.1.1.2;
DE   AltName: Full=NADH dehydrogenase subunit 4;
GN   Name=MT-ND4; Synonyms=MTND4, NADH4, ND4;
OS   Didelphis virginiana (North American opossum) (Didelphis marsupialis
OS   virginiana).
OG   Mitochondrion.
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC   Metatheria; Didelphimorphia; Didelphidae; Didelphis.
OX   NCBI_TaxID=9267;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   TISSUE=Liver;
RX   PubMed=8056314; DOI=10.1093/genetics/137.1.243;
RA   Janke A., Feldmaier-Fuchs G., Thomas K., von Haeseler A., Paabo S.;
RT   "The marsupial mitochondrial genome and the evolution of placental
RT   mammals.";
RL   Genetics 137:243-256(1994).
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 membrane {ECO:0000250}; Multi-pass
CC       membrane protein {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the complex I subunit 4 family. {ECO:0000305}.
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DR   EMBL; Z29573; CAA82686.1; -; Genomic_DNA.
DR   PIR; S47879; S47879.
DR   RefSeq; NP_007104.2; NC_001610.1.
DR   AlphaFoldDB; P41308; -.
DR   SMR; P41308; -.
DR   GeneID; 807778; -.
DR   CTD; 4538; -.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0031966; C:mitochondrial 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   GO; GO:0042773; P:ATP synthesis coupled electron transport; IEA:InterPro.
DR   InterPro; IPR000260; NADH4_N.
DR   InterPro; IPR010227; NADH_Q_OxRdtase_chainM/4.
DR   InterPro; IPR003918; NADH_UbQ_OxRdtase.
DR   InterPro; IPR001750; ND/Mrp_mem.
DR   PANTHER; PTHR43507; PTHR43507; 1.
DR   Pfam; PF01059; Oxidored_q5_N; 1.
DR   Pfam; PF00361; Proton_antipo_M; 1.
DR   PRINTS; PR01437; NUOXDRDTASE4.
DR   TIGRFAMs; TIGR01972; NDH_I_M; 1.
PE   3: Inferred from homology;
KW   Electron transport; Membrane; Mitochondrion; NAD; Respiratory chain;
KW   Translocase; Transmembrane; Transmembrane helix; Transport; Ubiquinone.
FT   CHAIN           1..474
FT                   /note="NADH-ubiquinone oxidoreductase chain 4"
FT                   /id="PRO_0000117928"
FT   TRANSMEM        22..42
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        60..80
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        93..113
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        114..134
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        145..165
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        195..215
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        224..244
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        257..277
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        284..303
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        308..330
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        350..370
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        391..411
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        435..455
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   474 AA;  53761 MW;  EB80249D38511B17 CRC64;
     MLKILLPTLM LIPLTWLSKN KWLWINTTTY SLLISITSLP MLYHPMDLGY NFNNSFSLDS
     LSSPLLVLSC WLLPLMIMAS QNHLNKESLM RKKLYLTMMV ILQSSLIIAF TSSELMMFYI
     LFETTLIPTL IIITRWGNQN ERLNAGIYFL FYTLVGSLPL LVALLTMNKN LGTLHILMNS
     ILINQLNYTL SNSTLWYACM TAFMIKMPLY GLHLWLPKAH VEAPIAGSMV LAAILLKLGG
     YGIMRISLFT EPMTMHLLYP FIILSMWGMI MTSSICMRQT DLKSLIAYSS VSHMALVIIA
     ALIQSTTSFM GATILMVAHG LTSSMLFCLA NTNYERIHSR TMILARGLQL ILPLMTTWWL
     TASLANLALP PTINLLGELM IITASFSWSN FSILLLGLNT VITALYSLYM LTTSQRGKFT
     HHMTSLYPSF TREHMLMTLH IMPLILLSLN PKYILGMTYC KYSLMKTLDC ESKH