ID   NQRD_SERP5              Reviewed;         209 AA.
AC   A8GAC2;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   13-NOV-2007, sequence version 1.
DT   25-MAY-2022, entry version 78.
DE   RecName: Full=Na(+)-translocating NADH-quinone reductase subunit D {ECO:0000255|HAMAP-Rule:MF_00428};
DE            Short=Na(+)-NQR subunit D {ECO:0000255|HAMAP-Rule:MF_00428};
DE            Short=Na(+)-translocating NQR subunit D {ECO:0000255|HAMAP-Rule:MF_00428};
DE            EC=7.2.1.1 {ECO:0000255|HAMAP-Rule:MF_00428};
DE   AltName: Full=NQR complex subunit D {ECO:0000255|HAMAP-Rule:MF_00428};
DE   AltName: Full=NQR-1 subunit D {ECO:0000255|HAMAP-Rule:MF_00428};
GN   Name=nqrD {ECO:0000255|HAMAP-Rule:MF_00428}; OrderedLocusNames=Spro_0956;
OS   Serratia proteamaculans (strain 568).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Yersiniaceae; Serratia.
OX   NCBI_TaxID=399741;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=568;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Glavina del Rio T., Dalin E.,
RA   Tice H., Pitluck S., Chain P., Malfatti S., Shin M., Vergez L., Schmutz J.,
RA   Larimer F., Land M., Hauser L., Kyrpides N., Kim E., Taghavi S., Newman L.,
RA   Vangronsveld J., van der Lelie D., Richardson P.;
RT   "Complete sequence of chromosome of Serratia proteamaculans 568.";
RL   Submitted (SEP-2007) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: NQR complex catalyzes the reduction of ubiquinone-1 to
CC       ubiquinol by two successive reactions, coupled with the transport of
CC       Na(+) ions from the cytoplasm to the periplasm. NqrA to NqrE are
CC       probably involved in the second step, the conversion of ubisemiquinone
CC       to ubiquinol. {ECO:0000255|HAMAP-Rule:MF_00428}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a ubiquinone + H(+) + n Na(+)(in) + NADH = a ubiquinol + n
CC         Na(+)(out) + NAD(+); Xref=Rhea:RHEA:47748, Rhea:RHEA-COMP:9565,
CC         Rhea:RHEA-COMP:9566, ChEBI:CHEBI:15378, ChEBI:CHEBI:16389,
CC         ChEBI:CHEBI:17976, ChEBI:CHEBI:29101, ChEBI:CHEBI:57540,
CC         ChEBI:CHEBI:57945; EC=7.2.1.1; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00428};
CC   -!- SUBUNIT: Composed of six subunits; NqrA, NqrB, NqrC, NqrD, NqrE and
CC       NqrF. {ECO:0000255|HAMAP-Rule:MF_00428}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC       Rule:MF_00428}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_00428}.
CC   -!- SIMILARITY: Belongs to the NqrDE/RnfAE family. {ECO:0000255|HAMAP-
CC       Rule:MF_00428}.
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DR   EMBL; CP000826; ABV40062.1; -; Genomic_DNA.
DR   RefSeq; WP_012005399.1; NC_009832.1.
DR   AlphaFoldDB; A8GAC2; -.
DR   SMR; A8GAC2; -.
DR   STRING; 399741.Spro_0956; -.
DR   EnsemblBacteria; ABV40062; ABV40062; Spro_0956.
DR   KEGG; spe:Spro_0956; -.
DR   eggNOG; COG1347; Bacteria.
DR   HOGENOM; CLU_046659_1_1_6; -.
DR   OMA; CIIMGRF; -.
DR   OrthoDB; 1782047at2; -.
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:0016655; F:oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor; IEA:UniProtKB-UniRule.
DR   GO; GO:0006814; P:sodium ion transport; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_00428; NqrD; 1.
DR   InterPro; IPR011292; NqrD.
DR   InterPro; IPR003667; NqrDE/RnfAE.
DR   PANTHER; PTHR30586:SF1; PTHR30586:SF1; 1.
DR   Pfam; PF02508; Rnf-Nqr; 1.
DR   PIRSF; PIRSF006102; NQR_DE; 1.
DR   TIGRFAMs; TIGR01939; nqrD; 1.
PE   3: Inferred from homology;
KW   Cell inner membrane; Cell membrane; Ion transport; Membrane; NAD; Sodium;
KW   Sodium transport; Translocase; Transmembrane; Transmembrane helix;
KW   Transport; Ubiquinone.
FT   CHAIN           1..209
FT                   /note="Na(+)-translocating NADH-quinone reductase subunit
FT                   D"
FT                   /id="PRO_1000060164"
FT   TRANSMEM        42..62
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00428"
FT   TRANSMEM        66..86
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00428"
FT   TRANSMEM        95..115
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00428"
FT   TRANSMEM        131..151
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00428"
FT   TRANSMEM        178..198
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00428"
SQ   SEQUENCE   209 AA;  22665 MW;  244994A9C402CC6A CRC64;
     MADSKEIKRV LLGPLFDNNP IALQVLGVCS ALAVTTKLET AVVMTIAVTL VTAFSSFFIS
     LIRHHIPNSV RIIVQMAIIA SLVIVVDQLL RAYAFEISKQ LSVFVGLIIT NCIVMGRAEA
     YAMKSPPIES FMDGIGNGLG YGVILVLVGF LRELFGSGKL FGIPVLETVQ NGGWYQPNGL
     FLLAPSAFFI IGLLIWALRS LKPAQIEKE