HHsearch alignment for GI: 254780843 and conserved domain: TIGR00883

>TIGR00883 2A0106 MFS transporter, metabolite:H+ symporter (MHS) family protein; InterPro: IPR004736 Recent genome-sequencing data and a wealth of biochemical and molecular genetic investigations have revealed the occurrence of dozens of families of primary and secondary transporters. Two such families have been found to occur ubiquitously in all classifications of living organisms. These are the ATP-binding cassette (ABC) superfamily and the major facilitator superfamily (MFS), also called the uniporter-symporter-antiporter family. While ABC family permeases are in general multicomponent primary active transporters, capable of transporting both small molecules and macromolecules in response to ATP hydrolysis the MFS transporters are single-polypeptide secondary carriers capable only of transporting small solutes in response to chemiosmotic ion gradients. Although well over 100 families of transporters have now been recognized and classified, the ABC superfamily and MFS account for nearly half of the solute transporters encoded within the genomes of microorganisms. They are also prevalent in higher organisms. The importance of these two families of transport systems to living organisms can therefore not be overestimated . The MFS was originally believed to function primarily in the uptake of sugars but subsequent studies revealed that drug efflux systems, Krebs cycle metabolites, organophosphate:phosphate exchangers, oligosaccharide:H1 symport permeases, and bacterial aromatic acid permeases were all members of the MFS. These observations led to the probability that the MFS is far more widespread in nature and far more diverse in function than had been thought previously. 17 subgroups of the MFS have been identified . Evidence suggests that the MFS permeases arose by a tandem intragenic duplication event in the early prokaryotes. This event generated a 2-transmembrane-spanner (TMS) protein topology from a primordial 6-TMS unit. Surprisingly, all currently recognized MFS permeases retain the two six-TMS units within a single polypeptide chain, although in 3 of the 17 MFS families, an additional two TMSs are found . Moreover, the well-conserved MFS specific motif between TMS2 and TMS3 and the related but less well conserved motif between TMS8 and TMS9 prove to be a characteristic of virtually all of the more than 300 MFS proteins identified. This entry represents the metabolite-H(+) symport (MHS) subfamily of the MFS. Members include citrate-proton symporters , alpha-ketoglutarate permease , shikimate transporters , and the proline/betaine transporter ProP .; GO: 0005215 transporter activity, 0006810 transport, 0016021 integral to membrane.
Probab=100.00  E-value=1.8e-31  Score=174.11  Aligned_cols=373  Identities=15%  Similarity=0.040  Sum_probs=239.8

Q ss_pred             HHHHHHHHHHHHHHHH-H-CCCHHHHHH-----HHHHHHHHHHHHHHHHHHHHHHHCHHHHHHHHHHHHHHHHHCCHHCC
Q ss_conf             9987389989999998-0-999899999-----99999999999999999999852628999999997643210000001
Q gi|254780843|r   25 GITSLNSILVPKLQNS-F-SLTYLQAML-----VEAIFFSCYFFFSIPAGMFIQRYGYIKGICTGLLIMSLGCILFTATI   97 (420)
Q Consensus        25 ~~~~~~~~~~p~l~~~-~-~~s~~~~g~-----i~s~~~~~~~i~~~~~G~l~Dr~Grr~~l~~~~~~~~i~~ll~~~a~   97 (420)
T Consensus         7 fDF~lYg~~A~lvf~~~Ffp~~dp~~~~~~~~atFa~gFl~RP~Gg~~FG~~GDr~GRk~~L~~tl~~Mg~~T~~IGLlP   86 (413)
T TIGR00883         7 FDFYLYGFAAVLVFNTFFFPSGDPLVALLATFATFAVGFLARPLGGIVFGHFGDRIGRKKTLVITLLMMGIGTVLIGLLP   86 (413)
T ss_pred             HHHHHHHHHHHHHHHCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCC
T ss_conf             87899999999973002789888278999999999999999889999998863235469999999999857665312247


Q ss_pred             CCCHH-----HHHHHHHHHHHHHHHHHHHHHHCCHHCCCCHHHHHHHHHHHHHHCCCHHHHHHHHHHHHHHCCCCCHHHH
Q ss_conf             32024-----6789998877756788876531000012303578877664431100003454788888641234204677
Q gi|254780843|r   98 EITTF-----KVFLIALCILAIGVVIIQVALNPFISLLGDPNTAVSRLTFAQFFNSLGTAIFPYIGSVLMLGNLASPNTS  172 (420)
Q Consensus        98 ~~~~~-----~~~~~~~~i~g~g~~~~~~~~~~~~~~~~~~~~r~~~~~~~~~~~~~g~~~g~~~~~~l~~~~~~~~~~~  172 (420)
T Consensus        87 sY~~IG~~APiLL~~~Rl~QGfs~GGE~gGaa~~~~E~A~~gkRG~~gSf~~~g~~~G~llA~l~~~~~s~~~~~~~P-~  165 (413)
T TIGR00883        87 SYATIGIWAPILLLLARLIQGFSLGGEWGGAALYLVESAPPGKRGFYGSFQQVGAPVGLLLAALVVLLLSYLLGDEAP-L  165 (413)
T ss_pred             CHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCC-H
T ss_conf             601177899999999999843567899999999999750022037888899986789999999999999997266520-3


Q ss_pred             HHHHHHHHHHHHHHHHHCCCCCCCHHHHHHHHHHHHCCCCCCHHHHHHHCCCCCCCCCCCCCCCCCCHHHHHHHHHHHHH
Q ss_conf             65555577898886420011211001345555432101231012332100011112221111111000111000135567
Q gi|254780843|r  173 MLADTMKDYQTDTARVISQMYLVLAIILFLATWLCWMQRNSFADHKRNHISFLKTLDILANPRFTMGAVCIFLYVGAEVA  252 (420)
Q Consensus       173 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  252 (420)
T Consensus       166 ~~WGWRiPFl~s~~l~~~gL~lR~~L~Et~~f~---~~~~~~~~~~~~~~~p~~~~~~~~~~~~~~~~~~~~~~~~~fY~  242 (413)
T TIGR00883       166 LEWGWRIPFLVSAVLVLIGLYLRRNLEETPVFE---KAQEKHKTRTGKKRIPLAELLTKHRKAFLLVLGLVIATTTTFYL  242 (413)
T ss_pred             HHCCCHHHHHHHHHHHHHHHHHHCCCCCCHHHH---HHHHHHHHHHCCCCCCHHHHHHHCHHHHHHHHHHHHHHHHHHHH
T ss_conf             310314589999999999999816564577999---98852125303767409999872229999999999998999999


Q ss_pred             HHHHHHHHHHHHCC---------CCCCHHHHHHHHHHHHHHHHHHCCCCCCCCCHHHCCCHHHHHHHHHHHHHHH--HHH
Q ss_conf             78999987542012---------2210124688899998764310011111100000000012455554567689--962
Q gi|254780843|r  253 IGSIMANYLMRHDT---------LHLDGISAGQHTAIYWGSAMIGRFIGTWILSRFSAEKTLCAFATTACSLVIL--SSY  321 (420)
Q Consensus       253 ~~~~~~~~~~~~~~---------~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~--~~~  321 (420)
T Consensus       243 ~t~y~~~Y~~~~~~vsEAGYA~GLg~~~~~~~~~~~~~~i~~~~~~P~~G~LsDriGRR~~~i~~~~~~~~~~~p~l~~l  322 (413)
T TIGR00883       243 ITTYLPTYLTTTLGVSEAGYALGLGLSANSALLVLMLSLILFFVVIPLSGALSDRIGRRRVLIIFTVLAALLAVPLLMAL  322 (413)
T ss_pred             HHHHHHHHHHHCCCCCHHHHHHHCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCHHHHHHHHHHHHHHHHHHHHHH
T ss_conf             99999998865167514568773268766899999999999999999999997553653999999999999999999987


Q ss_pred             C-CH--HHHHHHH--HHHHHHHHHHHHHHHHHHHHHHHHHH---HHHHHHHHHHHHHHHHHHHHHHHHHHHHHH-HHHHH
Q ss_conf             2-33--6899999--99999999999999999996301565---699999999999999999999999996123-79999
Q gi|254780843|r  322 T-TG--FISGWSL--IAVGLFNSIMFPTIFSLASASLEDQA---SGGSGIICTTISGGVIIPLGVGYLVDIASL-RDAMF  392 (420)
Q Consensus       322 ~-~~--~~~~~~~--~~~g~~~~~~~~~~~~~~~~~~~~~~---~~~~~~~~~~~~g~~i~p~i~G~l~d~~g~-~~~~~  392 (420)
T Consensus       323 ~~~~y~~~~~~~~~~~~~~~i~~~~~g~~~~~~~ElFPt~vR~~G~~l~y~~A~~~~GG~aP~iA~~L~~~~~~~~~~~g  402 (413)
T TIGR00883       323 LDSGYSPFTLVFFLLLGLALIGGMYTGPMGSLLPELFPTEVRYTGASLAYNLAGAIGGGLAPYIAAALVAITGDDLYAIG  402 (413)
T ss_pred             HCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCCHHH
T ss_conf             41787689999999999999999878769998772334407899887999999998656899999999972178874389


Q ss_pred             HHHHHHHHH
Q ss_conf             999999999
Q gi|254780843|r  393 VPAVCYIII  401 (420)
Q Consensus       393 ~~~~~~~~~  401 (420)
T Consensus       403 ~yl~~~a~~  411 (413)
T TIGR00883       403 YYLAALALI  411 (413)
T ss_pred             HHHHHHHHH
T ss_conf             999999997