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NQRE_METCA
ID   NQRE_METCA              Reviewed;         202 AA.
AC   Q604Z9;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   23-NOV-2004, sequence version 1.
DT   25-MAY-2022, entry version 95.
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=MCA2385;
OS   Methylococcus capsulatus (strain ATCC 33009 / NCIMB 11132 / Bath).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Methylococcales;
OC   Methylococcaceae; Methylococcus.
OX   NCBI_TaxID=243233;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 33009 / NCIMB 11132 / Bath;
RX   PubMed=15383840; DOI=10.1371/journal.pbio.0020303;
RA   Ward N.L., Larsen O., Sakwa J., Bruseth L., Khouri H.M., Durkin A.S.,
RA   Dimitrov G., Jiang L., Scanlan D., Kang K.H., Lewis M.R., Nelson K.E.,
RA   Methe B.A., Wu M., Heidelberg J.F., Paulsen I.T., Fouts D.E., Ravel J.,
RA   Tettelin H., Ren Q., Read T.D., DeBoy R.T., Seshadri R., Salzberg S.L.,
RA   Jensen H.B., Birkeland N.K., Nelson W.C., Dodson R.J., Grindhaug S.H.,
RA   Holt I.E., Eidhammer I., Jonasen I., Vanaken S., Utterback T.R.,
RA   Feldblyum T.V., Fraser C.M., Lillehaug J.R., Eisen J.A.;
RT   "Genomic insights into methanotrophy: the complete genome sequence of
RT   Methylococcus capsulatus (Bath).";
RL   PLoS Biol. 2:1616-1628(2004).
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; AE017282; AAU91561.1; -; Genomic_DNA.
DR   RefSeq; WP_010961612.1; NC_002977.6.
DR   AlphaFoldDB; Q604Z9; -.
DR   SMR; Q604Z9; -.
DR   STRING; 243233.MCA2385; -.
DR   EnsemblBacteria; AAU91561; AAU91561; MCA2385.
DR   KEGG; mca:MCA2385; -.
DR   eggNOG; COG2209; Bacteria.
DR   HOGENOM; CLU_095255_0_0_6; -.
DR   OMA; YFLGMCS; -.
DR   OrthoDB; 1814639at2; -.
DR   Proteomes; UP000006821; 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; ISS:JCVI.
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;
KW   Reference proteome; Sodium; Sodium transport; Translocase; Transmembrane;
KW   Transmembrane helix; Transport; Ubiquinone.
FT   CHAIN           1..202
FT                   /note="Na(+)-translocating NADH-quinone reductase subunit
FT                   E"
FT                   /id="PRO_1000060200"
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;  21692 MW;  5D8567C06F9AC108 CRC64;
     MEAYINLFIK SVFIENMALS FFLGMCTFIA VSKKIETAVG LGIAVVIVQT LTVPANNLIY
     TYLLKEGALS WAGLHDVDLS FIALMACIGV IAAMVQILEM VLDKFFPALY NALGIFLPLI
     TVNCAILAGS LFMIERDYNF SESVVYGVGS GFGWALAITA MAGVREKLKY SDVPAGLRGL
     GITFISAGLM ALGFMAFSGI QL
 
 
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