ID   NQRE_MARN8              Reviewed;         202 AA.
AC   A1U1Y9;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   06-FEB-2007, sequence version 1.
DT   25-MAY-2022, entry version 88.
DE   RecName: Full=Na(+)-translocating NADH-quinone reductase subunit E {ECO:0000255|HAMAP-Rule:MF_00429};
DE            Short=Na(+)-NQR subunit E {ECO:0000255|HAMAP-Rule:MF_00429};
DE            Short=Na(+)-translocating NQR subunit E {ECO:0000255|HAMAP-Rule:MF_00429};
DE            EC=7.2.1.1 {ECO:0000255|HAMAP-Rule:MF_00429};
DE   AltName: Full=NQR complex subunit E {ECO:0000255|HAMAP-Rule:MF_00429};
DE   AltName: Full=NQR-1 subunit E {ECO:0000255|HAMAP-Rule:MF_00429};
GN   Name=nqrE {ECO:0000255|HAMAP-Rule:MF_00429}; OrderedLocusNames=Maqu_1927;
OS   Marinobacter nauticus (strain ATCC 700491 / DSM 11845 / VT8) (Marinobacter
OS   aquaeolei).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales;
OC   Marinobacteraceae; Marinobacter.
OX   NCBI_TaxID=351348;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700491 / DSM 11845 / VT8;
RX   PubMed=21335390; DOI=10.1128/aem.01866-10;
RA   Singer E., Webb E.A., Nelson W.C., Heidelberg J.F., Ivanova N., Pati A.,
RA   Edwards K.J.;
RT   "Genomic potential of Marinobacter aquaeolei, a biogeochemical
RT   'opportunitroph'.";
RL   Appl. Environ. Microbiol. 77:2763-2771(2011).
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_00429}.
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_00429};
CC   -!- SUBUNIT: Composed of six subunits; NqrA, NqrB, NqrC, NqrD, NqrE and
CC       NqrF. {ECO:0000255|HAMAP-Rule:MF_00429}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC       Rule:MF_00429}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_00429}.
CC   -!- SIMILARITY: Belongs to the NqrDE/RnfAE family. {ECO:0000255|HAMAP-
CC       Rule:MF_00429}.
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DR   EMBL; CP000514; ABM19008.1; -; Genomic_DNA.
DR   RefSeq; WP_011785401.1; NC_008740.1.
DR   AlphaFoldDB; A1U1Y9; -.
DR   SMR; A1U1Y9; -.
DR   STRING; 351348.Maqu_1927; -.
DR   DNASU; 4654238; -.
DR   EnsemblBacteria; ABM19008; ABM19008; Maqu_1927.
DR   KEGG; maq:Maqu_1927; -.
DR   eggNOG; COG2209; Bacteria.
DR   HOGENOM; CLU_095255_0_0_6; -.
DR   OMA; YFLGMCS; -.
DR   OrthoDB; 1814639at2; -.
DR   Proteomes; UP000000998; Chromosome.
DR   GO; GO:0009276; C:Gram-negative-bacterium-type cell wall; IEA:InterPro.
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:0022904; P:respiratory electron transport chain; IEA:InterPro.
DR   GO; GO:0006814; P:sodium ion transport; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_00429; NqrE; 1.
DR   InterPro; IPR003667; NqrDE/RnfAE.
DR   InterPro; IPR010967; NqrE.
DR   PANTHER; PTHR30335:SF1; PTHR30335:SF1; 1.
DR   Pfam; PF02508; Rnf-Nqr; 1.
DR   PIRSF; PIRSF006102; NQR_DE; 1.
DR   TIGRFAMs; TIGR01940; nqrE; 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..202
FT                   /note="Na(+)-translocating NADH-quinone reductase subunit
FT                   E"
FT                   /id="PRO_1000060199"
FT   TRANSMEM        11..31
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00429"
FT   TRANSMEM        35..55
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00429"
FT   TRANSMEM        81..101
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00429"
FT   TRANSMEM        114..134
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00429"
FT   TRANSMEM        144..164
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00429"
FT   TRANSMEM        180..200
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00429"
SQ   SEQUENCE   202 AA;  21610 MW;  695DB789CFA93997 CRC64;
     MEHYLSLLLK AIFVENMALA FFLGMCTFLA ISKKIEAATG LGIAVVVVLT VTVPVNNLLY
     NTILREGALD WAGLPNVDLS FLGLLTYIGV IAAIVQIMEM VLDKYIPALY AALGVFLPLI
     TVNCAILGAS LFMVERDYTF GESLVYGFGA GVGWALAIIA LAGIREKLKY SDVPNGLRGL
     GITFITVGLM SLGFMSFSGI SL