ID   NDHM_SYNP6              Reviewed;         110 AA.
AC   Q5N066;
DT   14-OCT-2008, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-2005, sequence version 1.
DT   25-MAY-2022, entry version 81.
DE   RecName: Full=NAD(P)H-quinone oxidoreductase subunit M {ECO:0000255|HAMAP-Rule:MF_01352};
DE            EC=7.1.1.- {ECO:0000255|HAMAP-Rule:MF_01352};
DE   AltName: Full=NAD(P)H dehydrogenase I subunit M {ECO:0000255|HAMAP-Rule:MF_01352};
DE            Short=NDH-1 subunit M {ECO:0000255|HAMAP-Rule:MF_01352};
DE            Short=NDH-M {ECO:0000255|HAMAP-Rule:MF_01352};
GN   Name=ndhM {ECO:0000255|HAMAP-Rule:MF_01352}; OrderedLocusNames=syc2114_d;
OS   Synechococcus sp. (strain ATCC 27144 / PCC 6301 / SAUG 1402/1) (Anacystis
OS   nidulans).
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus.
OX   NCBI_TaxID=269084;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 27144 / PCC 6301 / SAUG 1402/1;
RX   PubMed=17211581; DOI=10.1007/s11120-006-9122-4;
RA   Sugita C., Ogata K., Shikata M., Jikuya H., Takano J., Furumichi M.,
RA   Kanehisa M., Omata T., Sugiura M., Sugita M.;
RT   "Complete nucleotide sequence of the freshwater unicellular cyanobacterium
RT   Synechococcus elongatus PCC 6301 chromosome: gene content and
RT   organization.";
RL   Photosyn. Res. 93:55-67(2007).
CC   -!- FUNCTION: NDH-1 shuttles electrons from an unknown electron donor, via
CC       FMN and iron-sulfur (Fe-S) centers, to quinones in the respiratory
CC       and/or the photosynthetic chain. The immediate electron acceptor for
CC       the enzyme in this species is believed to be plastoquinone. Couples the
CC       redox reaction to proton translocation, and thus conserves the redox
CC       energy in a proton gradient. Cyanobacterial NDH-1 also plays a role in
CC       inorganic carbon-concentration. {ECO:0000255|HAMAP-Rule:MF_01352}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a plastoquinone + (n+1) H(+)(in) + NADH = a plastoquinol + n
CC         H(+)(out) + NAD(+); Xref=Rhea:RHEA:42608, Rhea:RHEA-COMP:9561,
CC         Rhea:RHEA-COMP:9562, ChEBI:CHEBI:15378, ChEBI:CHEBI:17757,
CC         ChEBI:CHEBI:57540, ChEBI:CHEBI:57945, ChEBI:CHEBI:62192;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01352};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a plastoquinone + (n+1) H(+)(in) + NADPH = a plastoquinol + n
CC         H(+)(out) + NADP(+); Xref=Rhea:RHEA:42612, Rhea:RHEA-COMP:9561,
CC         Rhea:RHEA-COMP:9562, ChEBI:CHEBI:15378, ChEBI:CHEBI:17757,
CC         ChEBI:CHEBI:57783, ChEBI:CHEBI:58349, ChEBI:CHEBI:62192;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01352};
CC   -!- SUBUNIT: NDH-1 can be composed of about 15 different subunits;
CC       different subcomplexes with different compositions have been identified
CC       which probably have different functions. {ECO:0000255|HAMAP-
CC       Rule:MF_01352}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000255|HAMAP-
CC       Rule:MF_01352}; Peripheral membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_01352}; Cytoplasmic side {ECO:0000255|HAMAP-Rule:MF_01352}.
CC   -!- SIMILARITY: Belongs to the complex I NdhM subunit family.
CC       {ECO:0000255|HAMAP-Rule:MF_01352}.
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DR   EMBL; AP008231; BAD80304.1; -; Genomic_DNA.
DR   RefSeq; WP_011244424.1; NC_006576.1.
DR   AlphaFoldDB; Q5N066; -.
DR   SMR; Q5N066; -.
DR   STRING; 269084.syc2114_d; -.
DR   EnsemblBacteria; BAD80304; BAD80304; syc2114_d.
DR   KEGG; syc:syc2114_d; -.
DR   eggNOG; ENOG5031AQM; Bacteria.
DR   OMA; PDNEFLW; -.
DR   Proteomes; UP000001175; Chromosome.
DR   GO; GO:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016655; F:oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor; IEA:UniProtKB-UniRule.
DR   GO; GO:0048038; F:quinone binding; IEA:UniProtKB-KW.
DR   HAMAP; MF_01352; NDH1_NDH1M; 1.
DR   InterPro; IPR018922; NdhM.
DR   PANTHER; PTHR36900; PTHR36900; 1.
DR   Pfam; PF10664; NdhM; 1.
PE   3: Inferred from homology;
KW   Membrane; NAD; NADP; Plastoquinone; Quinone; Thylakoid; Translocase;
KW   Transport.
FT   CHAIN           1..110
FT                   /note="NAD(P)H-quinone oxidoreductase subunit M"
FT                   /id="PRO_0000352199"
SQ   SEQUENCE   110 AA;  12697 MW;  EA6F975C60507082 CRC64;
     MLLKSTTRHI RIFTAEIEGN ELQPSDTVLT LDVDPDNEFN WNEEALQKVY RQFDDLVESY
     AGQELSEYNL RRIGSELEVL LRQMLQAGEI SYNLNCRVLN YSMGVPQAVV