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