ID   NU3M_ALLMA              Reviewed;         114 AA.
AC   Q37399;
DT   30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1996, sequence version 1.
DT   25-MAY-2022, entry version 68.
DE   RecName: Full=NADH-ubiquinone oxidoreductase chain 3;
DE            EC=7.1.1.2;
DE   AltName: Full=NADH dehydrogenase subunit 3;
GN   Name=ND3; Synonyms=NAD3;
OS   Allomyces macrogynus.
OG   Mitochondrion.
OC   Eukaryota; Fungi; Fungi incertae sedis; Blastocladiomycota;
OC   Blastocladiomycota incertae sedis; Blastocladiomycetes; Blastocladiales;
OC   Blastocladiaceae; Allomyces.
OX   NCBI_TaxID=28583;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=ATCC 46923 / Burma 3-35 (35OC);
RX   PubMed=8636971; DOI=10.1006/jmbi.1996.0056;
RA   Paquin B., Lang B.F.;
RT   "The mitochondrial DNA of Allomyces macrogynus: the complete genomic
RT   sequence from an ancestral fungus.";
RL   J. Mol. Biol. 255:688-701(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 3 family. {ECO:0000305}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; U41288; AAC49240.1; -; Genomic_DNA.
DR   PIR; S63657; S63657.
DR   RefSeq; NP_043739.1; NC_001715.1.
DR   AlphaFoldDB; Q37399; -.
DR   SMR; Q37399; -.
DR   GeneID; 801838; -.
DR   VEuPathDB; FungiDB:AlmafMp20; -.
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_0000117702"
FT   TRANSMEM        4..24
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        55..75
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        82..102
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   114 AA;  12715 MW;  7CF6092F508D3A53 CRC64;
     MTYLVYIVFT IVLTVGLILV SYLLSQAQPD SEKVSAYECG FSPLGDARQK FDVSFYLIAI
     LFIIFDLEVV FILPFASVIH NVSLLGGWIT IIFLVILTIG FIYEFVSGAI TDSF