ID   NQRA_HISS2              Reviewed;         446 AA.
AC   B0UWG2;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   08-APR-2008, sequence version 1.
DT   03-AUG-2022, entry version 76.
DE   RecName: Full=Na(+)-translocating NADH-quinone reductase subunit A {ECO:0000255|HAMAP-Rule:MF_00425};
DE            Short=Na(+)-NQR subunit A {ECO:0000255|HAMAP-Rule:MF_00425};
DE            Short=Na(+)-translocating NQR subunit A {ECO:0000255|HAMAP-Rule:MF_00425};
DE            EC=7.2.1.1 {ECO:0000255|HAMAP-Rule:MF_00425};
DE   AltName: Full=NQR complex subunit A {ECO:0000255|HAMAP-Rule:MF_00425};
DE   AltName: Full=NQR-1 subunit A {ECO:0000255|HAMAP-Rule:MF_00425};
GN   Name=nqrA {ECO:0000255|HAMAP-Rule:MF_00425}; OrderedLocusNames=HSM_1847;
OS   Histophilus somni (strain 2336) (Haemophilus somnus).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Pasteurellales;
OC   Pasteurellaceae; Histophilus.
OX   NCBI_TaxID=228400;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=2336;
RG   US DOE Joint Genome Institute;
RA   Siddaramappa S., Duncan A.J., Challacombe J.F., Rainey D., Gillaspy A.F.,
RA   Carson M., Gipson J., Gipson M., Bruce D., Detter J.C., Han C.S., Land M.,
RA   Tapia R., Thompson L.S., Orvis J., Zaitshik J., Barnes G., Brettin T.S.,
RA   Dyer D.W., Inzana T.J.;
RT   "Complete sequence of Haemophilus somnus 2336.";
RL   Submitted (FEB-2008) 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_00425}.
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_00425};
CC   -!- SUBUNIT: Composed of six subunits; NqrA, NqrB, NqrC, NqrD, NqrE and
CC       NqrF. {ECO:0000255|HAMAP-Rule:MF_00425}.
CC   -!- SIMILARITY: Belongs to the NqrA family. {ECO:0000255|HAMAP-
CC       Rule:MF_00425}.
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DR   EMBL; CP000947; ACA31635.1; -; Genomic_DNA.
DR   RefSeq; WP_012340938.1; NC_010519.1.
DR   AlphaFoldDB; B0UWG2; -.
DR   SMR; B0UWG2; -.
DR   STRING; 228400.HSM_1847; -.
DR   PRIDE; B0UWG2; -.
DR   EnsemblBacteria; ACA31635; ACA31635; HSM_1847.
DR   KEGG; hsm:HSM_1847; -.
DR   HOGENOM; CLU_046656_0_0_6; -.
DR   OMA; IKQRPYD; -.
DR   OrthoDB; 688908at2; -.
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_00425; NqrA; 1.
DR   InterPro; IPR008703; NqrA.
DR   InterPro; IPR022615; NqrA_C_domain.
DR   PANTHER; PTHR37839; PTHR37839; 1.
DR   Pfam; PF05896; NQRA; 1.
DR   Pfam; PF11973; NQRA_SLBB; 1.
DR   TIGRFAMs; TIGR01936; nqrA; 1.
PE   3: Inferred from homology;
KW   Ion transport; NAD; Sodium; Sodium transport; Translocase; Transport;
KW   Ubiquinone.
FT   CHAIN           1..446
FT                   /note="Na(+)-translocating NADH-quinone reductase subunit
FT                   A"
FT                   /id="PRO_1000080564"
SQ   SEQUENCE   446 AA;  48535 MW;  53EAFFE855C32E6F CRC64;
     MITIKKGLDL PIAGKPEQVI HNGNAVKEVA LLGEEYVGMR PSMKVREGDV VKKGQVLFED
     KKNPGIVFTA PASGTVTAIN RGAKRVLQSV VIKVEGNEQI TFTQYNEDEL KKLTSEQVRQ
     NLQSSGLWTA LRTRPFSKVP ASDAVPSSIF VNAMDTNPLS ANPEIVLKEH WQDFTDGLTV
     LSRLHEGKLH LCKAGDSNIP TIDLPNLAVH DFSGPHPAGL SGTHIHFIDP VSATKSVWYL
     NYQDVIAIGK LFTTGEIYTD RVVSLAGPQV KNPRLIRTQL GANLSHLTEN ELSAGENRVI
     SGSVLSGNTA IGPYNYLGRY ALQVSVIAEG REKEFLGWIM PGKNKFSITR TVLGHFSSKL
     FNFTSAVNGG HRAMVPIGAY ERVVPLDIIP TLLLRDLASG DTDSAQALGC LELDEEDLAL
     CTFVCPGKNE YGPMLRAALD KIEKEG