HHsearch alignment for GI: 254780967 and conserved domain: TIGR00886
>TIGR00886 2A0108 nitrite transporter; InterPro: IPR004737 This family represents nitrate/nitrite antiporters in bacteria, fungi, algae and marine diatoms. Nitrate transporters in Escherichia coli are involved in excretion of nitrite produced by the dissimilatory reduction of nitrate. NarK is polytopic membrane protein with 12 transmembrane domains which is involved in nitrate uptake and nitrite excretion and is thought to function as a nitrate/nitrite antiporter. At low concentrations of nitrate, NarK mediates the electrogenic excretion of nitrite rather than nitrate/nitrite exchange. This process prevents intracellular accumulation of toxic levels of nitrite and allows further detoxification in the periplasm through the action of nitrite reductase . In the opportunistic fungal pathogen Aspergillus fumigatus the nitrate transporter crnA clusters with nitrite reductase (niiA) and nitrate reductase (niaD). NiaD, niiA and crnA are induced by nitrate and repressed by ammonium at the transcriptional level . In Hebeloma cylindrosporum the nitrate transporter polypeptide (NRT2) is characterised by 12 transmembrane domains and presents both a long putative intracellular loop and a short C-terminal tail, two structural features which distinguish fungal high-affinity transporters from their plant homologues. Transcription is repressed by ammonium and strongly stimulated by nitrate but also by organic nitrogen or nitrogen deficiency. ; GO: 0015103 inorganic anion transmembrane transporter activity, 0015698 inorganic anion transport, 0016021 integral to membrane.
Probab=99.97 E-value=1.5e-29 Score=179.43 Aligned_cols=262 Identities=19% Similarity=0.260 Sum_probs=191.6
Q ss_pred HHHHHHHHHHHHHHH-HHHHHHH---HHHCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCHHHHHHHHHHHHHHHH
Q ss_conf 999999886576699-9999999---981999889999999999999999999999998650828999999999999999
Q gi|254780967|r 8 AMLMAINSLGIDIIL-PCLPKIS---DSLHLSNENYGQHLISFYLIGYGIAQIFYGPLSDRFGRKIVMMFGLVIHIISTF 83 (398)
Q Consensus 8 ~~~~~~~~~~~~~~~-p~lp~i~---~~l~~s~~~~~~~~~s~~~~~~~i~~~~~G~l~Dr~Grr~~l~~g~~~~~i~~~ 83 (398)
T Consensus 6 S~~~F~lsF~~W~~~~~L~~~~~~G~~dl~Ls~~Q~~-~~~~~p~~~g~~~R~~~G~l~d~~GpR~~~~~~~~~~~IP~~ 84 (472)
T TIGR00886 6 SWFGFFLSFLVWFAFSPLAVQIIKGKDDLGLSTAQLG-NLVAVPVLAGAVLRIILGFLVDKFGPRKTTTLSLLLLAIPCL 84 (472)
T ss_pred HHHHHHHHHHHHHHHHHHHHHHHCCCCCCCCCHHHHH-HHHHHHHHHHHHHHHHHHHHCCCCCHHHHHHHHHHHHHHHHH
T ss_conf 7889999999999987778654157633147999999-999999999999999988634776718999999999999999
Q ss_pred HHHCCC-----CHHHHCCCCCCCCCCCCCCCCCCHHHHHHHHCCCCCCCCCCCCCCEECCCCCC----CC---CCCCCCC
Q ss_conf 851001-----10111002232100111111100012332100011112212233100011111----11---1112222
Q gi|254780967|r 84 IMVTIN-----SFTGMLCMRLIQGIGGAAPRIITISIIRDIYDGRDMAKVLSIAMMIFMIMPIL----AP---SIGQATV 151 (398)
Q Consensus 84 ~~~~a~-----~~~~l~~~r~l~G~g~~~~~~~~~a~i~~~~~~~~~~~~~~~~~~~~~~g~~i----gp---~ig~~l~ 151 (398)
T Consensus 85 ~~~~~~~~p~~s~~~L~~~rlf~Gi~Gg~-Fa~~~~~~s~fFp~~~~GtA~gl~aG~GN~G~~~~~~~~Pa~f~i~~~~~ 163 (472)
T TIGR00886 85 LAGLAVQDPSTSYSVLLLLRLFIGIAGGS-FASCMPWISFFFPKKIQGTALGLAAGWGNMGGGVAQFVMPALFAIIASLI 163 (472)
T ss_pred HHHHHCCCCCCCHHHHHHHHHHHHHHHHH-HHHHHHHHHCCCCCCHHHHHHHHHHCHHHHHHHHHHHHHHHHHHHHHHHH
T ss_conf 99841268998999999999999675546-88766566306882201467588614326789999999999999999862
Q ss_pred C-----------CCCCCCHHH-HHHHHHHHHHHHHHHHHCCCCCCHH----------------------------HHCCC
Q ss_conf 1-----------111110145-6788888777788876167886402----------------------------21011
Q gi|254780967|r 152 A-----------LSGGWIGIF-VCMGVITTFITLWYYIRFPETLDPR----------------------------DVRPL 191 (398)
Q Consensus 152 ~-----------~~~gWr~~f-~~~~~~~~~~~~~~~~~~pet~~~~----------------------------~~~~~ 191 (398)
T Consensus 164 ~~~f~G~p~~F~~~~~~g~~~~~~~~~i~~~~~~l~~~~~~~~~~~~ws~r~~~ARGl~v~~~~~~~~~~~~~~~~~~~~ 243 (472)
T TIGR00886 164 KGAFGGLPQTFDAHLAWGWAFVIVPALILLLIALLIFFVVADTPPGKWSERHKSARGLEVTTLKDDYFLLIMNLPATAKL 243 (472)
T ss_pred CCCCCCCCCCEEEECCCHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCCCCCCCCCCCCCCCHHHHCCCHHCCCCCCCCC
T ss_conf 21127898401101365044676989999999999999998624676445776557754103354303201025777544
Q ss_pred C-----------------------------------------CCCCCCCCCCCCCCCHHHHHHHHHHHHHHCCHHHHHHH
Q ss_conf 1-----------------------------------------11123331000000000256777887631001468887
Q gi|254780967|r 192 N-----------------------------------------LYAILHSFSLIFKHRASTLYNIANSLTMGAILGFVNSS 230 (398)
Q Consensus 192 ~-----------------------------------------~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 230 (398)
T Consensus 244 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~l~~~~~~~~~~~~~~~~~~~~~~~~~~~~tW~~~l~Y~~tFGsflg~~s~~ 323 (472)
T TIGR00886 244 SVKSARLSKIAFLVAALKVVVEPLLGTEALATYNIWVLNAIIESLSLKEQLKVFRDKHTWILALLYSVTFGSFLGVSSIF 323 (472)
T ss_pred CCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCCCHHHHHCCCCHHHHHHHHHHHCCHHHHHHHHH
T ss_conf 52010036777677542232102121332334435777887415564327987436314777765652240699999999
Q ss_pred HH---HHHHHCCCCCC-HHHHHHHHHHHHHHHHHHHHHHHHCCCC
Q ss_conf 65---45543153110-1588998865767788999998500156
Q gi|254780967|r 231 QQ---IYVGIYQLGNL-FPIAFAVGGFAMSIASFINSRLVEKFGI 271 (398)
Q Consensus 231 ~~---~~~~~~~~~~~-~~~~~~~~~~~~~~~~~~~~~l~~r~~~ 271 (398)
T Consensus 324 ~~vfl~~~~~fg~~~~~aG~~a~~~~~~g~~~RP~GG~lsD~~gg 368 (472)
T TIGR00886 324 AMVFLLFKDQFGLSKVQAGAYASLGGLLGLLARPLGGLLSDRLGG 368 (472)
T ss_pred HHHHHHHCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCC
T ss_conf 889987416799887339999999998988863766689987268