ID   NU4M_APILI              Reviewed;         447 AA.
AC   P34853;
DT   01-FEB-1994, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1994, sequence version 1.
DT   25-MAY-2022, entry version 78.
DE   RecName: Full=NADH-ubiquinone oxidoreductase chain 4;
DE            EC=7.1.1.2;
DE   AltName: Full=NADH dehydrogenase subunit 4;
GN   Name=ND4;
OS   Apis mellifera ligustica (Common honeybee) (Italian honeybee).
OG   Mitochondrion.
OC   Eukaryota; Metazoa; Ecdysozoa; Arthropoda; Hexapoda; Insecta; Pterygota;
OC   Neoptera; Endopterygota; Hymenoptera; Apocrita; Aculeata; Apoidea; Apidae;
OC   Apis.
OX   NCBI_TaxID=7469;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   TISSUE=Thorax;
RX   PubMed=8417993; DOI=10.1093/genetics/133.1.97;
RA   Crozier R.H., Crozier Y.C.;
RT   "The mitochondrial genome of the honeybee Apis mellifera: complete sequence
RT   and genome organization.";
RL   Genetics 133:97-117(1993).
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; L06178; AAB96806.1; -; Genomic_DNA.
DR   PIR; S52968; S52968.
DR   RefSeq; NP_008090.1; NC_001566.1.
DR   AlphaFoldDB; P34853; -.
DR   SMR; P34853; -.
DR   GeneID; 807702; -.
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; IPR003918; NADH_UbQ_OxRdtase.
DR   InterPro; IPR001750; ND/Mrp_mem.
DR   PANTHER; PTHR43507; PTHR43507; 1.
DR   Pfam; PF00361; Proton_antipo_M; 1.
DR   PRINTS; PR01437; NUOXDRDTASE4.
PE   3: Inferred from homology;
KW   Electron transport; Membrane; Mitochondrion; NAD; Respiratory chain;
KW   Translocase; Transmembrane; Transmembrane helix; Transport; Ubiquinone.
FT   CHAIN           1..447
FT                   /note="NADH-ubiquinone oxidoreductase chain 4"
FT                   /id="PRO_0000117888"
FT   TRANSMEM        4..24
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        34..54
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        67..87
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        100..120
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        149..169
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        189..209
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        223..243
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        248..268
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        279..299
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        304..324
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        349..371
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        388..408
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        422..442
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   447 AA;  52896 MW;  5981FE98650C364D CRC64;
     MYLLLLLIML NMLMMSMIYL FMLFMNKMKN NLNLIIGNLI IINLLLNLFN LNWIDWIYIF
     CNLSFNMYSY GLIMLTLWIF GLIFISLNNN SLNCLFMNLL LMISLLLVFL SMNLLLFYLF
     YEFGLLLIFY LVVKWGYSEN RWLSGFYLMF YTMIFSLPML YIIYYIYLID YSLNFMLMEM
     LNLNLNMMLF IYLLMSFLVK IPIYLFHGWL LKAHVEAPYY GSMILASIML KLGGYGMLRL
     MIIYKNEFIL IQKILVMINS FGVLILSLMC LSQFDMKSII AISSIVHMGL MIMSMMTFLK
     ISLIGGYLMM ISHGLSSSGL FFLVNVIYSQ TNSRLMFINK GMINFMPSMS LLWFMLCSSN
     MGSPVSLNLI SEVMLLIGMI SWLKFMMLIL MMYCLFSFIY SIYLFMFINH GKIFIMFKIK
     NGILVEYFVL LLHWIPLNLM FLKLYFI