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NU4M_TRIST
ID   NU4M_TRIST              Reviewed;         231 AA.
AC   P92759;
DT   15-JUL-1998, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-1997, sequence version 1.
DT   25-MAY-2022, entry version 68.
DE   RecName: Full=NADH-ubiquinone oxidoreductase chain 4;
DE            EC=7.1.1.2;
DE   AltName: Full=NADH dehydrogenase subunit 4;
DE   Flags: Fragment;
GN   Name=MT-ND4; Synonyms=MTND4, NADH4, ND4;
OS   Trimeresurus stejnegeri (Chinese green tree viper) (Viridovipera
OS   stejnegeri).
OG   Mitochondrion.
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC   Lepidosauria; Squamata; Bifurcata; Unidentata; Episquamata; Toxicofera;
OC   Serpentes; Colubroidea; Viperidae; Crotalinae; Trimeresurus.
OX   NCBI_TaxID=39682;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Kraus F., Mink D.G., Brown W.M.;
RT   "Crotaline intergeneric relationships based on mitochondrial DNA sequence
RT   data.";
RL   Copeia 4:763-773(1996).
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; U41892; AAB46655.1; -; Genomic_DNA.
DR   AlphaFoldDB; P92759; -.
DR   SMR; P92759; -.
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; IPR003918; NADH_UbQ_OxRdtase.
DR   InterPro; IPR001750; ND/Mrp_mem.
DR   PANTHER; PTHR43507; PTHR43507; 1.
DR   Pfam; PF00361; Proton_antipo_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..>231
FT                   /note="NADH-ubiquinone oxidoreductase chain 4"
FT                   /id="PRO_0000118000"
FT   TRANSMEM        1..21
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        34..54
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        63..85
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        89..111
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        128..148
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        156..176
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   NON_TER         1
FT   NON_TER         231
SQ   SEQUENCE   231 AA;  25520 MW;  81AAD0100DD8DB1B CRC64;
     PIAGSMVLAA ILLKLGGYGI IRMMQILPTT KTDMFLPFIV LALWGAILAN LTCLQQTDLK
     SLIAYSSVSH MGLVVAAIII QTPWGLSGAM ALMIAHGFTS SALFCLANTT YERTHTRILI
     LTRGFHNILP MTTTWWLLAN LMNIATPPTM NFTSELLIMS ALFNWCPTTI IMLGLSMLIT
     ASYSLHMFLS TQMGYPLLNS QTEPTHTREH LLMILHIIPL AMVSMKPELI I
 
 
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