ID   NHAA_ACTSZ              Reviewed;         389 AA.
AC   A6VQU5;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   21-AUG-2007, sequence version 1.
DT   25-MAY-2022, entry version 81.
DE   RecName: Full=Na(+)/H(+) antiporter NhaA {ECO:0000255|HAMAP-Rule:MF_01844};
DE   AltName: Full=Sodium/proton antiporter NhaA {ECO:0000255|HAMAP-Rule:MF_01844};
GN   Name=nhaA {ECO:0000255|HAMAP-Rule:MF_01844}; OrderedLocusNames=Asuc_1995;
OS   Actinobacillus succinogenes (strain ATCC 55618 / DSM 22257 / CCUG 43843 /
OS   130Z).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Pasteurellales;
OC   Pasteurellaceae; Actinobacillus.
OX   NCBI_TaxID=339671;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 55618 / DSM 22257 / CCUG 43843 / 130Z;
RX   PubMed=21118570; DOI=10.1186/1471-2164-11-680;
RA   McKinlay J.B., Laivenieks M., Schindler B.D., McKinlay A.A.,
RA   Siddaramappa S., Challacombe J.F., Lowry S.R., Clum A., Lapidus A.L.,
RA   Burkhart K.B., Harkins V., Vieille C.;
RT   "A genomic perspective on the potential of Actinobacillus succinogenes for
RT   industrial succinate production.";
RL   BMC Genomics 11:680-680(2010).
CC   -!- FUNCTION: Na(+)/H(+) antiporter that extrudes sodium in exchange for
CC       external protons. {ECO:0000255|HAMAP-Rule:MF_01844}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2 H(+)(out) + Na(+)(in) = 2 H(+)(in) + Na(+)(out);
CC         Xref=Rhea:RHEA:29251, ChEBI:CHEBI:15378, ChEBI:CHEBI:29101;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01844};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:29252;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01844};
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC       Rule:MF_01844}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_01844}.
CC   -!- SIMILARITY: Belongs to the NhaA Na(+)/H(+) (TC 2.A.33) antiporter
CC       family. {ECO:0000255|HAMAP-Rule:MF_01844}.
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DR   EMBL; CP000746; ABR75342.1; -; Genomic_DNA.
DR   RefSeq; WP_012073719.1; NC_009655.1.
DR   AlphaFoldDB; A6VQU5; -.
DR   SMR; A6VQU5; -.
DR   STRING; 339671.Asuc_1995; -.
DR   EnsemblBacteria; ABR75342; ABR75342; Asuc_1995.
DR   KEGG; asu:Asuc_1995; -.
DR   eggNOG; COG3004; Bacteria.
DR   HOGENOM; CLU_015803_1_0_6; -.
DR   OMA; MGLMLRC; -.
DR   OrthoDB; 1805428at2; -.
DR   Proteomes; UP000001114; Chromosome.
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:0015297; F:antiporter activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0015081; F:sodium ion transmembrane transporter activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006885; P:regulation of pH; IEA:InterPro.
DR   Gene3D; 1.20.1530.10; -; 1.
DR   HAMAP; MF_01844; NhaA; 1.
DR   InterPro; IPR023171; Na/H_antiporter_dom_sf.
DR   InterPro; IPR004670; NhaA.
DR   PANTHER; PTHR30341; PTHR30341; 1.
DR   Pfam; PF06965; Na_H_antiport_1; 1.
DR   TIGRFAMs; TIGR00773; NhaA; 1.
PE   3: Inferred from homology;
KW   Antiport; Cell inner membrane; Cell membrane; Ion transport; Membrane;
KW   Reference proteome; Sodium; Sodium transport; Transmembrane;
KW   Transmembrane helix; Transport.
FT   CHAIN           1..389
FT                   /note="Na(+)/H(+) antiporter NhaA"
FT                   /id="PRO_0000334222"
FT   TRANSMEM        7..27
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01844"
FT   TRANSMEM        58..78
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01844"
FT   TRANSMEM        94..114
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01844"
FT   TRANSMEM        125..145
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01844"
FT   TRANSMEM        154..174
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01844"
FT   TRANSMEM        176..196
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01844"
FT   TRANSMEM        199..219
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01844"
FT   TRANSMEM        260..280
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01844"
FT   TRANSMEM        291..311
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01844"
FT   TRANSMEM        327..347
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01844"
FT   TRANSMEM        363..383
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01844"
SQ   SEQUENCE   389 AA;  41636 MW;  1A61BE7A2B854C21 CRC64;
     MRFLRRFFQL ESSSGILLLI FAMLAMSLAN SSLKSHYFNF LDIPIVMQFG TFAIDKSLLH
     WVNDGLMAIF FVLVGMEVKR EMLEGALASY RQAVFPALAA VGGMVVPALI YVLITRSYAE
     LSNGWAIPMA TDIAFALGVV ALLGARVPLP LKVFLLALAI IDDLGAIVVI ALFFSEQLSV
     PALTIAAFSI FGLLVLNRMK VGHLCGYLLF GGILWASVLK SGVHATLAGV IIGFSIPLKD
     RRGNRLLHAF EHTLAPWCSF LILPLFAFAN AGVSLGSINV ASVFSPLPMG IALGLLLGKP
     LGVFGFCFLA VKLRLAKLPE GVDFKQILAV AVLCGIGFTM SMFLSSLAFG GESTSTINTL
     SRLGILLGSG LSAVIGYLLL RAFTKPAEN