ID   NHAA_PSYA2              Reviewed;         400 AA.
AC   Q4FQM2;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   30-AUG-2005, sequence version 1.
DT   25-MAY-2022, entry version 102.
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=Psyc_1838;
OS   Psychrobacter arcticus (strain DSM 17307 / VKM B-2377 / 273-4).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Moraxellales; Moraxellaceae;
OC   Psychrobacter.
OX   NCBI_TaxID=259536;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 17307 / VKM B-2377 / 273-4;
RX   PubMed=20154119; DOI=10.1128/aem.02101-09;
RA   Ayala-del-Rio H.L., Chain P.S., Grzymski J.J., Ponder M.A., Ivanova N.,
RA   Bergholz P.W., Di Bartolo G., Hauser L., Land M., Bakermans C.,
RA   Rodrigues D., Klappenbach J., Zarka D., Larimer F., Richardson P.,
RA   Murray A., Thomashow M., Tiedje J.M.;
RT   "The genome sequence of Psychrobacter arcticus 273-4, a psychroactive
RT   Siberian permafrost bacterium, reveals mechanisms for adaptation to low-
RT   temperature growth.";
RL   Appl. Environ. Microbiol. 76:2304-2312(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; CP000082; AAZ19686.1; -; Genomic_DNA.
DR   RefSeq; WP_011281097.1; NC_007204.1.
DR   AlphaFoldDB; Q4FQM2; -.
DR   SMR; Q4FQM2; -.
DR   STRING; 259536.Psyc_1838; -.
DR   EnsemblBacteria; AAZ19686; AAZ19686; Psyc_1838.
DR   KEGG; par:Psyc_1838; -.
DR   eggNOG; COG3004; Bacteria.
DR   HOGENOM; CLU_015803_1_0_6; -.
DR   OMA; MGLMLRC; -.
DR   OrthoDB; 1805428at2; -.
DR   Proteomes; UP000000546; 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..400
FT                   /note="Na(+)/H(+) antiporter NhaA"
FT                   /id="PRO_0000334381"
FT   TRANSMEM        10..30
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01844"
FT   TRANSMEM        60..80
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01844"
FT   TRANSMEM        95..115
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01844"
FT   TRANSMEM        126..146
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01844"
FT   TRANSMEM        155..175
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01844"
FT   TRANSMEM        178..198
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01844"
FT   TRANSMEM        218..238
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01844"
FT   TRANSMEM        265..285
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01844"
FT   TRANSMEM        295..315
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01844"
FT   TRANSMEM        334..354
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01844"
FT   TRANSMEM        364..384
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01844"
SQ   SEQUENCE   400 AA;  43162 MW;  64507C88F1C2AE71 CRC64;
     MAIHKIRAFF NLEASGGIVL ALAAIAAMII ANTSLNTWYE SFIHAPVAIQ IGSFSIAKDA
     HHWINDGLMA VFFFLVGLEL KREVLIGELS NVKQIILPAG AALGGMVMPA IVYLFFNYNE
     PEFWRGWAIP TATDIAFALG ILSLLGNRVP NSLKVFLVSI AIFDDIGAII IIALFYTNDL
     SLGSLAIAGL CLPFLYMLNR RNVTSITPYL LIGVIMWIAV LKSGIHATLA GVVLALFIPL
     FDRTDPEHSP LEELEHDLQN TVSYGILPLF AFANAGISLK GAGFGELFHS VPLGIAAGLF
     IGKQVGVMLM CWLIFKLGIS TMPKGMNFKQ IYGAALLCGV GFTMSLFIGG LAFAGETPLF
     DERLGIIMGS IVSGIAGYMM LKTTLKDEVN VTSVDLTRHS