ID   NUOM_BUCAI              Reviewed;         505 AA.
AC   P57263;
DT   01-DEC-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-DEC-2000, sequence version 1.
DT   25-MAY-2022, entry version 107.
DE   RecName: Full=NADH-quinone oxidoreductase subunit M;
DE            EC=7.1.1.-;
DE   AltName: Full=NADH dehydrogenase I subunit M;
DE   AltName: Full=NDH-1 subunit M;
GN   Name=nuoM; OrderedLocusNames=BU165;
OS   Buchnera aphidicola subsp. Acyrthosiphon pisum (strain APS) (Acyrthosiphon
OS   pisum symbiotic bacterium).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Erwiniaceae; Buchnera.
OX   NCBI_TaxID=107806;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=APS;
RX   PubMed=10993077; DOI=10.1038/35024074;
RA   Shigenobu S., Watanabe H., Hattori M., Sakaki Y., Ishikawa H.;
RT   "Genome sequence of the endocellular bacterial symbiont of aphids Buchnera
RT   sp. APS.";
RL   Nature 407:81-86(2000).
CC   -!- FUNCTION: NDH-1 shuttles electrons from NADH, via FMN and iron-sulfur
CC       (Fe-S) centers, to quinones in the respiratory chain. Couples the redox
CC       reaction to proton translocation (for every two electrons transferred,
CC       four hydrogen ions are translocated across the cytoplasmic membrane),
CC       and thus conserves the redox energy in a proton gradient (By
CC       similarity). {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a quinone + 5 H(+)(in) + NADH = a quinol + 4 H(+)(out) +
CC         NAD(+); Xref=Rhea:RHEA:57888, ChEBI:CHEBI:15378, ChEBI:CHEBI:24646,
CC         ChEBI:CHEBI:57540, ChEBI:CHEBI:57945, ChEBI:CHEBI:132124;
CC   -!- SUBUNIT: Composed of 13 different subunits. Subunits NuoA, H, J, K, L,
CC       M, N constitute the membrane sector of the complex (By similarity).
CC       {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000305}; Multi-pass membrane
CC       protein {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the complex I subunit 4 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; BA000003; BAB12883.1; -; Genomic_DNA.
DR   RefSeq; NP_239997.1; NC_002528.1.
DR   RefSeq; WP_010895981.1; NC_002528.1.
DR   AlphaFoldDB; P57263; -.
DR   SMR; P57263; -.
DR   STRING; 107806.10038848; -.
DR   EnsemblBacteria; BAB12883; BAB12883; BAB12883.
DR   KEGG; buc:BU165; -.
DR   PATRIC; fig|107806.10.peg.175; -.
DR   eggNOG; COG1008; Bacteria.
DR   HOGENOM; CLU_007100_4_4_6; -.
DR   OMA; ITRWGNQ; -.
DR   Proteomes; UP000001806; Chromosome.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0008137; F:NADH dehydrogenase (ubiquinone) activity; IEA:InterPro.
DR   GO; GO:0048038; F:quinone binding; IEA:UniProtKB-KW.
DR   GO; GO:0042773; P:ATP synthesis coupled electron transport; IEA:InterPro.
DR   InterPro; IPR010227; NADH_Q_OxRdtase_chainM/4.
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.
DR   TIGRFAMs; TIGR01972; NDH_I_M; 1.
PE   3: Inferred from homology;
KW   Cell membrane; Membrane; NAD; Quinone; Reference proteome; Translocase;
KW   Transmembrane; Transmembrane helix.
FT   CHAIN           1..505
FT                   /note="NADH-quinone oxidoreductase subunit M"
FT                   /id="PRO_0000118041"
FT   TRANSMEM        30..50
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        86..106
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        114..134
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        136..156
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        173..193
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        221..241
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        251..271
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        285..305
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        313..333
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        373..393
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        409..429
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        462..482
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   505 AA;  57826 MW;  69C60A2B9ADF3ED9 CRC64;
     MLLSLLIIIP FLSSFFSFFS PRLHNNFPRW IALSGIIATL LVVIQIFFQE NYHIFQIRHY
     PNWNCQLIVP WISRFGIEFN IALDGLSIIM LIFSSFLSII AIICSWNEIK KNEGFFYFNF
     MLVFTGIIGV FISCDLFLFF CFWEIMLIPM YFLIALWSDK TEKKKNFLAA NKFFLYSQTS
     GLILLSSILL LVFSHYYSTN ILTFNYNLLI NKPINIYVEY IVMIGFFLSF AIKMPIVPFH
     GWLPDIHSRS LSCGSVEIIG VLLKTAPYAL LRYNLVLFPD STKSFSLIAV FWGIISIFYG
     AWIAFSQTNI KRLIAYSSVS HMGLILIGIY SNNERALQGV VIQMLSNSLT VAALCILSGQ
     IYKRFKTQDM SKMGGLWSCI YWIPGFSLFF SLANLGVPGT GNFIGEFLIL SGVFEVFPLV
     SILATIGIVF SSIYSLNVIQ KIFYGPCKQN IKVFFINKQE VWTIIALVFT LVFLGLNPQK
     IIDVSYNSIH NIQKEFNNSI LKIRS