ID   NU3M_RHISA              Reviewed;         114 AA.
AC   O99823;
DT   30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-1999, sequence version 1.
DT   03-AUG-2022, entry version 69.
DE   RecName: Full=NADH-ubiquinone oxidoreductase chain 3;
DE            EC=7.1.1.2;
DE   AltName: Full=NADH dehydrogenase subunit 3;
GN   Name=ND3;
OS   Rhipicephalus sanguineus (Brown dog tick) (Ixodes sanguineus).
OG   Mitochondrion.
OC   Eukaryota; Metazoa; Ecdysozoa; Arthropoda; Chelicerata; Arachnida; Acari;
OC   Parasitiformes; Ixodida; Ixodoidea; Ixodidae; Rhipicephalinae;
OC   Rhipicephalus; Rhipicephalus.
OX   NCBI_TaxID=34632;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=9866211; DOI=10.1093/oxfordjournals.molbev.a025903;
RA   Black W.C. IV, Roehrdanz R.L.;
RT   "Mitochondrial gene order is not conserved in arthropods: prostriate and
RT   metastriate tick mitochondrial genomes.";
RL   Mol. Biol. Evol. 15:1772-1785(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 membrane {ECO:0000250}; Multi-pass
CC       membrane protein {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the complex I subunit 3 family. {ECO:0000305}.
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DR   EMBL; AF081829; AAD05523.1; -; Genomic_DNA.
DR   PIR; T11159; T11159.
DR   RefSeq; NP_008516.1; NC_002074.1.
DR   AlphaFoldDB; O99823; -.
DR   SMR; O99823; -.
DR   EnsemblMetazoa; GeneID_808369_df_mr; NP_008516.1; GeneID_808369.
DR   GeneID; 808369; -.
DR   KEGG; rsan:808369; -.
DR   CTD; 4537; -.
DR   VEuPathDB; VectorBase:GeneID_808369; -.
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   Gene3D; 1.20.58.1610; -; 1.
DR   InterPro; IPR000440; NADH_UbQ/plastoQ_OxRdtase_su3.
DR   InterPro; IPR038430; NDAH_ubi_oxred_su3_sf.
DR   PANTHER; PTHR11058; PTHR11058; 1.
DR   Pfam; PF00507; Oxidored_q4; 1.
PE   3: Inferred from homology;
KW   Electron transport; Membrane; Mitochondrion; NAD; Respiratory chain;
KW   Translocase; Transmembrane; Transmembrane helix; Transport; Ubiquinone.
FT   CHAIN           1..114
FT                   /note="NADH-ubiquinone oxidoreductase chain 3"
FT                   /id="PRO_0000117824"
FT   TRANSMEM        1..21
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        55..75
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        85..105
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   114 AA;  13431 MW;  B1DEC7B52F34BB64 CRC64;
     MIFYLHITIF LVVCLLMMLF FSLGFQGKKA KEKNSPFECG FDPFSLSRVP FSLKFFFVGI
     VFLIFDVEIV VILPFPLVMM TKNLMFVFSF TFINFLIVLG LLYEFKYSML DRLK