>TIGR00844 c_cpa1 sodium/hydrogen antiporter; InterPro: IPR004712 Na^+/H^+ exchange proteins eject protons from cells, effectively eliminating excess acid from actively metabolising cells. Na^+/H^+ exchange activity is also crucial for the regulation of cell volume, and for the reabsorption of NaCl across renal, intestinal, and other epithelia. These antiports exchange Na^+ for H^+ in an electroneutral manner, and this activity is carried out by a family of Na^+/H^+ exchangers, or NHEs, which are known to be present in both prokaryotic and eukaryotic cells. In mammalian cells, Na^+/H^+ exchange activity is found in both the plasma membrane and inner mitochondrial membrane. To date, six mammalian isoforms have been identified (designated NHE1-NHE6) , . These exchangers are highly-regulated (glyco)phosphoproteins, which, based on their primary structure, appear to contain 10-12 membrane-spanning regions (M) at the N-terminus and a large cytoplasmic region at the C-terminus. The transmembrane regions M3-M12 share identity with other members of the family. The M6 and M7 regions are highly conserved. Thus, this is thought to be the region that is involved in the transport of sodium and hydrogen ions. The cytoplasmic region has little similarity throughout the family. There is some evidence that the exchangers may exist in the cell membrane as homodimers, but little is currently known about the mechanism of their antiport . This group is specific for the fungal members of this family. ; GO: 0015385 sodium:hydrogen antiporter activity, 0006814 sodium ion transport, 0016021 integral to membrane.

Probab=99.72 E-value=2.9e-15 Score=122.04 Aligned_cols=334 Identities=16% Similarity=0.113 Sum_probs=218.6 Q ss_pred HHHHHHHHHHHCCCCHHHHHHHHHHHHCCHHCCCCCCHH------HHHHHHHHHHHHHHHHHHHCCCHHHHHHHCCHHHH Q ss_conf 999999999870888679999999962741038558478------99999999999999882541688999841515889 Q gi|254780924|r 10 LAFIFGAIANRCRLPTLIGYLVAGILVGPRTPGFVASQS------LVPALAEIGIILLMFGVGLHFSVKDLISVRGIALP 83 (609) Q Consensus 10 ~a~i~g~la~rl~lP~i~~~il~GillGp~~l~~i~~~~------~l~~l~~lgl~~llF~~Gleld~~~l~~~~~~~~~ 83 (609) T Consensus 26 FSLVSLfVKE~LYIGES~VA~iFGLIVGP~CLNWFNPL~WGN~DSITLEI~RI~LCLQvFAV~VELPRKYMlKHWvSVTM 105 (923) T TIGR00844 26 FSLVSLFVKEKLYIGESMVASIFGLIVGPHCLNWFNPLSWGNTDSITLEISRILLCLQVFAVSVELPRKYMLKHWVSVTM 105 (923) T ss_pred HHHHHHHHHHHHEECHHHHHHHHHHEECCCCCCCCCCCCCCCCCHHHHHHHHHHHHHHHHHHHHHCCHHHHHHHHHHHHH T ss_conf 99988777521010302412331010257101546776667752037789999999877875210204454566778888 Q ss_pred HHHHHHHHHHHHHHHHHHHH--CCCHHHHHHHHHHHHHHHHHHHHHHHHHHHH--HCCCCHHHHHHHHHHHHHHHHHHHH Q ss_conf 98999999999999999996--7886899999999974238999987656554--1144057898998777789999999 Q gi|254780924|r 84 GALIQIILGTALGALMGMVM--GWSLGGSVVFGLALSIASTVVLLKALQENRI--LETDRGKIAVGWLIVEDLIIVLALV 159 (609) Q Consensus 84 ~~~~~~~~~~~~~~~~~~~l--g~~~~~all~g~~l~~ts~~vv~~~l~~~~~--~~~~~g~~~~~~~~~~Di~~i~~l~ 159 (609) T Consensus 106 LL~PVMT~GWLvIaLFVWILvPGLNF~ASLL~~ACITATDPvLAQSVVSG~FAQ~VPGHLRNLLS~ESGCNDGlA~PF~F 185 (923) T TIGR00844 106 LLVPVMTSGWLVIALFVWILVPGLNFPASLLMGACITATDPVLAQSVVSGTFAQKVPGHLRNLLSCESGCNDGLAFPFVF 185 (923) T ss_pred HHHHHHHHHHHHHHHHHHHHCCCCCHHHHHHHHHHHHHCCCHHEEHHCCCCCCCCCCHHHHHHHHHHCCCCCCHHHHHHH T ss_conf 88777666799999998887067633479998523420261010010026322467615666654303667641454899 Q ss_pred HHHHHHCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCEEEEEECCCCCHHHHHHHCC--CCCHHHHHH Q ss_conf 999861344433013567899998876532101479999999841010000100034454387764203--567368999 Q gi|254780924|r 160 LIPAAATNYSAEPSSMTHPWTSFITQQMGFEVGMPGLIMITLLKVVAFIGVMLIFGRRVIPWILHMIFY--TGSRELFRL 237 (609) Q Consensus 160 il~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~--~~~~~~~~~ 237 (609) T Consensus 186 LS~~LlLy------------------PG~G~~IVKDWICVTIL~EC~FG~~LGC~IGY~GR~~IRFAE~k~IIDRESFLA 247 (923) T TIGR00844 186 LSLDLLLY------------------PGRGGEIVKDWICVTILWECIFGSILGCIIGYVGRKAIRFAEGKNIIDRESFLA 247 (923) T ss_pred HHHHHHCC------------------CCCCCCEEEHHHHHHHHHHHHHHHHHHHHHHHHCCHHHHHHCCCEECCHHHHHH T ss_conf 98997505------------------899972454031357799889877887664321002210212661111355899 Q ss_pred HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCH-HHH-HHHHHHHH-HHHHHHHHHHHHHHHCCHHHHH------H Q ss_conf 9999999999988874110024666664222027614-568-99999766-8999999998865311479886------2 Q gi|254780924|r 238 GVLAIALGFAYGSSKLFGVSLSLGAFFAGMILAESEL-SQS-AAQESLPL-RDAFSVLFFISVGMMFNPDILI------S 308 (609) Q Consensus 238 ~~l~~~~~~~~~~~~~~g~s~~lgaf~aG~~l~~~~~-~~~-~~~~~~~~-~~~~~~~fFv~iG~~l~~~~l~------~ 308 (609) T Consensus 248 FY~iLAl-~CAGFGS~LGVDDLLVSF~AG~~FAWDGWFa~KT~ESNVS~VID~LLNYAYFvYlG~IlPW~~FNN~~IG~~ 326 (923) T TIGR00844 248 FYLILAL-TCAGFGSMLGVDDLLVSFFAGTAFAWDGWFAQKTHESNVSNVIDVLLNYAYFVYLGSILPWKDFNNGDIGLD 326 (923) T ss_pred HHHHHHH-HHCCCCCHHHHHHHHHHHHHHHHHHHHHHHHCCCCCCCHHHHHHHHHHHHHHHHHHCCCCCCCCCCCCCCHH T ss_conf 9999999-741432033477899988742012220024203331212579999988899998602056000577333347 Q ss_pred HHHHHHHHHHHHHHHHHHHHHHHHCC--CCCCHHHHHHHHHHHCCCCHHHHHHHHHH Q ss_conf 02567777655542212232110002--55879999998643212202567889887 Q gi|254780924|r 309 NPILLMMAVIIVIIGKALIAFIVVIA--FGRSVATALTIAASLSQIGEFSFILANLG 363 (609) Q Consensus 309 ~~~~~l~~~~~~~~~k~~~~~~~~~~--~~~~~~~~~~~g~~l~~~g~~~~v~a~~a 363 (609) T Consensus 327 VWRLIiLSlVVIFLRRIPAVl~L~PLIPDIKSWREA~FiGHFG-PIGVGAvfAAI~~ 382 (923) T TIGR00844 327 VWRLIILSLVVIFLRRIPAVLILKPLIPDIKSWREALFIGHFG-PIGVGAVFAAILS 382 (923) T ss_pred HHHHHHHHHHHHHHHHHHHHHHCCCCCCCHHHHHHHHHCCCCC-CHHHHHHHHHHHH T ss_conf 9999999999999853114641047888502145553114657-5038999999852

HHsearch alignment for GI: 254780924 and conserved domain: TIGR00844