>TIGR01276 thiB thiamin/thiamin pyrophosphate ABC transporter, thiamin/thiamin pyrophospate-binding protein; InterPro: IPR005967 Bacterial high affinity transport systems are involved in active transport of solutes across the cytoplasmic membrane. The protein components of these traffic systems include one or two transmembrane protein components, one or two membrane-associated ATP-binding proteins and a high affinity periplasmic solute-binding protein. In Gram-positive bacteria, which are surrounded by a single membrane and therefore have no periplasmic region, the equivalent proteins are bound to the membrane via an N-terminal lipid anchor. These homologue proteins do not play an integral role in the transport process per se, but probably serve as receptors to trigger or initiate translocation of the solute through the membrane by binding to external sites of the integral membrane proteins of the efflux system. In addition at least some solute-binding proteins function in the initiation of sensory transduction pathways. Thiamine pyrophosphate (TPP) is a required cofactor synthesized de novo in Salmonella typhimurium . The primary role for TPP is in central metabolism as an electron carrier and nucleophile for such enzymes as pyruvate dehydrogenase (1.2.4.1 from EC), acetolactate synthase (4.1.3.18 from EC), and alpha-ketoglutarate dehydrogenase (1.2.4.2 from EC). Despite its importance in cellular physiology, neither the de novo biosynthetic pathway nor the salvage systems for thiamine are fully understood in any organism. The thiamine ABC transporter, periplasmic binding protein in proteobacteria is believed to be involved in the specific translocation of thiamine and its phosphoesters across the inner membrane The protein belongs to the larger ABC transport system which consists of at least three components: the inner membrane permease; thiamine binding protein and an ATP-binding subunit. It has been experimentally demonstrated that mutants in the various steps in the de novo synthesis of thiamine and its biologically active form, namely thiamine pyrophosphate can be exogenously supplemented with thiamine, thiamine monophosphate or thiamine pyrophosphate.; GO: 0005524 ATP binding, 0042626 ATPase activity coupled to transmembrane movement of substances, 0006810 transport, 0030288 outer membrane-bounded periplasmic space.

Probab=100.00 E-value=0 Score=300.85 Aligned_cols=312 Identities=52% Similarity=0.954 Sum_probs=302.7 Q ss_pred CCCCCEEEEEECCCCCCCHHHHHHHHHHHHHHH-CCEEEEEECCCHHHHHHHHHHHHCCCCCEEEECCCHHHHHHHHHHH Q ss_conf 234885999978877851223388999999884-8879999728868999788753126641011013337899988752 Q gi|254780561|r 26 LPAKPVLTVYTYNSFVADEGAGPKIKQAFERKC-NCELKLIGLSDGVALLNKLRMEGENSAADIVLGFDNNLIDLARKTG 104 (338) Q Consensus 26 ~~~~~~l~v~~~~~~~~~~~~~~~i~~~Fek~~-gikV~~~~~~~~~~~~~~~~a~~~~~~~Dv~~~~~~~~~~~~~~~~ 104 (338) T Consensus 12 ~~A~~~~~VY~YDSF~~~WG~GP~VK~~FEkA~~~C~~~l~~lE~~~~LLNR~RlEGK~~KAD~VLGLDN~lL~~A~KTG 91 (326) T TIGR01276 12 VFAKQVLTVYSYDSFAADWGAGPKVKKDFEKADPNCELKLVALEDVVVLLNRLRLEGKKSKADVVLGLDNFLLDAAEKTG 91 (326) T ss_pred HHCCCEEEEEECCCCCCCCCCCCCCHHHHHCCCCCCCEEEEECCCCEEEEEEEEECCCCCCCCEEECCHHHHHHHHHHCC T ss_conf 65054016850224332357758421144057876413656413330322122303666543367633056787664166 Q ss_pred CCCCCCCCHHHCCCCCCCCCCCCCCEEEEEEHHHHCCCCCCCCCCCHHHHCCCCCCCEEEEEECCCCCCHHHHHHHHHHH Q ss_conf 12613677000210001243211532431000110011124587645652120006828985047653036789999871 Q gi|254780561|r 105 LFAKSNIDASQLKLPIKWDDDIFVPYDYGYLAFIYDKRQITQPPKNFDELINSTKPWKIIYQDPRTSTLGLGLLLWIQKI 184 (338) Q Consensus 105 l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~y~~~~~~~~p~s~~~l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 184 (338) T Consensus 92 ~FA~~~V~~~~~~~P~~W~N~TF~PFDyG~yAFVYDK~KL~NPP~SLKELVEs~Q~~~VIYQDPRTS~~G~GLL~WM~~V 171 (326) T TIGR01276 92 LFAKSNVDLDALDLPTKWANDTFLPFDYGYYAFVYDKTKLKNPPKSLKELVESDQDLRVIYQDPRTSSVGLGLLLWMNKV 171 (326) T ss_pred CCCCCCCCCEECCCCCCCCCCCCCCCCCCCEEEEEECCCCCCCCHHHHHHHCCCCCCEEEEECCCCCCCCCHHHHHHHHC T ss_conf 43556555000048877467621564457535787210146886445765203577268975687686443476655440 Q ss_pred C-CCCHHHHHHHHHHCCCEEECCCHHHHHHHHCCCCCEEEEECCHHHHHHHHHCCCCEEEEECCCCEEEEEEEEEEECCC Q ss_conf 7-731378987776288468308478988862258656999504499999850799737883169808888642433789 Q gi|254780561|r 185 Y-GDNSAQVWKKIATKTATVTKGWTESYGFFLKGESDFVLSYSTSPGFYLLNYGQDDYVAALFSEGHYLQIEVAAQLVRS 263 (338) Q Consensus 185 ~-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~g~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~eG~~~~~~~~~i~k~a 263 (338) T Consensus 172 YP~D~~~~AW~~L~K~TVTV~KGWS~~YG~FLKGE~DLVLSY~TSP~YH~L~EKKDNYAA~~F~EGH~~QVE~AAR~A~~ 251 (326) T TIGR01276 172 YPADDIQSAWKKLDKKTVTVTKGWSDAYGLFLKGEADLVLSYSTSPLYHILEEKKDNYAAADFAEGHILQVELAARVAAS 251 (326) T ss_pred CCCCCHHHHHHHHCCCEEEEECCCHHHCCCCCCCCCCEEEEECCCCHHHHHHHCCCCHHHHCCCCCCHHHHHHHHHHHCC T ss_conf 78554478999744643664068255504000243102420000521321210243112302146623556667775258 Q ss_pred CCHHHHHHHHHHHCCHHHHHHHHHCCCEEECCCCCCCCHHHHCCCCCCC-CCCCHHHHHHHHHHHHHHHHHHHHC Q ss_conf 9989999999996399999998850450505576588213412232223-4789899999999999999998741 Q gi|254780561|r 264 KQPQLAQEFMQFMISPSFQRILPTTNWMYPVVDISMPDVYQAIRIPQKS-LRFNAEETTRYRNQWISSWQNAVSR 337 (338) Q Consensus 264 ~n~~~A~~Fi~flls~e~Q~~~a~~~~~~P~~~~~~p~~~~~~~~~~~~-~~~~~~~~~~~~~~~~~~W~~~v~~ 337 (338) T Consensus 252 ~~P~~A~~Fl~Fl~SP~~Q~~I~T~N~M~PV~~~~~~~~F~~L~~~~~Tq~~~~P~~~~~Q~~~WIS~WQ~~~~~ 326 (326) T TIGR01276 252 KNPELADDFLAFLVSPAAQKAIVTANIMLPVINVELEAGFDKLKKQAKTQLEITPAVVAEQLKAWISEWQRALSK 326 (326) T ss_pred CCCHHHHHHHHHHCCHHHHHCCCCCCEECCEEEEEECCCHHHHCCCCCCCEEECHHHHHHHHHHHHHHHHHHHCC T ss_conf 880458999997318356301332321203353211501354166522210205167888887567777775149

HHsearch alignment for GI: 254780561 and conserved domain: TIGR01276