>TIGR01181 dTDP_gluc_dehyt dTDP-glucose 4,6-dehydratase; InterPro: IPR005888 The conversion of dTDP-glucose into dTDP-4-keto-6-deoxyglucose by Escherichia coli dTDP-glucose 4,6-dehydratase) takes place in the active site in three steps: dehydrogenation to dTDP-4-ketoglucose, dehydration to dTDP-4-ketoglucose-5,6-ene, and rereduction of C6 to the methyl group. The 4,6-dehydratase makes use of tightly bound NAD^+ as the coenzyme for transiently oxidizing the substrate, activating it for the dehydration step . This and other 4,6-dehydratases catalyze the first committed step in all 6-deoxysugar biosynthetic pathways described to date. Numerous 6-deoxysugars are used in bacterial lipopolysaccharide production as well as in the biosynthesis of a diverse array of secondary metabolites.; GO: 0008460 dTDP-glucose 46-dehydratase activity, 0009225 nucleotide-sugar metabolic process.

Probab=99.15 E-value=1.7e-10 Score=83.67 Aligned_cols=214 Identities=16% Similarity=0.182 Sum_probs=130.4 Q ss_pred EEEEECCCCCCCHHHHHHHHHHHCC--CEEEEEECC--HHHHHHHHHHHHCCCCEEEEECCCCCHHHHHHHHHHHHHHHC Q ss_conf 8999388988525899999999899--889999489--789999999985159649998779999999999999999837 Q gi|254780462|r 9 RGLIMGVANDHSIAWGIAKVLHSAG--AQLAFSYQG--ESIGKRLKPLALTVDSDFMIPCNVEDPSSMDLLFERIKERWE 84 (267) Q Consensus 9 ~~lItGas~~~GIG~aia~~l~~~G--a~V~i~~~~--~~~~~~~~~l~~~~~~~~~~~~Dv~~~~~v~~~~~~~~~~~g 84 (267) T Consensus 1 ~~LVTGGaGF--IGsnFvry~~~~~~D~~v~vlDkLTYAgn~e~L~~l~~~-pr~~Fv~GDI~D~~lv~~~~~e~----- 72 (340) T TIGR01181 1 RILVTGGAGF--IGSNFVRYILNEHPDAEVIVLDKLTYAGNLENLADLEDN-PRYRFVKGDIGDRELVDRLLKEH----- 72 (340) T ss_pred CCEEECCCCH--HHHHHHHHHHHHCCCCEEEEEECCCCCCCHHHHHHHHCC-CCEEEEECCCCHHHHHHHHHHHC----- T ss_conf 9236327852--568999999974799579986354455786555233239-66156742302288998884001----- Q ss_pred CCCEEEECCCCCCCCCCCCCCCCCCHHHHHHHHHCCCCHHHHHHHHCCCC---CCC----CCE-EEEEEEE--------- Q ss_conf 98899936833177655576125799999776501661123222100222---446----841-6898875--------- Q gi|254780462|r 85 TLDFVVHSIAFSDKNELRGPYYNTSRDNFIQTMLVSCFSFTEIVRRAAQL---MPH----GGA-MITLTYG--------- 147 (267) Q Consensus 85 ~iD~lVnnAg~~~~~~~~~~~~~~~~e~~~~~~~vn~~~~~~~~~~~~~~---~~~----~G~-II~isS~--------- 147 (267) T Consensus 73 ~~D~VvhFAAESHVDR---SI--~~P~~F~~---TNv~GT~tLLEA~R~~w~aL~e~~~a~~r~l~HiSTDEVYGdl~~~ 144 (340) T TIGR01181 73 DPDAVVHFAAESHVDR---SI--SGPEAFIE---TNVVGTYTLLEAVRKYWHALREAKKAGVRKLHHISTDEVYGDLEKG 144 (340) T ss_pred CCCEEEECCCCCHHHH---CC--CCCHHHHH---CCHHHHHHHHHHHHHHCCCCCCCCCCCCEEEEEEECCEEECCCCCC T ss_conf 7677886222052333---01--45411444---0337889999999740445664451310263576030144046789 Q ss_pred ----EEC-CCCCCCCCCHHHHHHHHHHHHHHHHHHHHHCCEEEEECC----CCCCCHHHHCCCCCHHHHHHHH------H Q ss_conf ----201-456432100000156776314779984210858975622----8726855750798479999998------2 Q gi|254780462|r 148 ----GSM-RVVPNYNAMAPAKSALESSTKYLACDYGGMNIRINAISA----GPVRTLAGASISNGRDIAAWSK------E 212 (267) Q Consensus 148 ----~~~-~~~~~~~~Y~asKaal~~ltr~lA~El~~~gIrVNaIaP----G~i~T~~~~~~~~~~~~~~~~~------~ 212 (267) T Consensus 145 ~~~~ftE~tpl~PsSPYSASKAasD~LVrAy~rTYG---Lp~~ITrCsNNYGPYQ--------fpEKLIPl~I~nal~G~ 213 (340) T TIGR01181 145 DPASFTETTPLAPSSPYSASKAASDLLVRAYHRTYG---LPVLITRCSNNYGPYQ--------FPEKLIPLMITNALAGK 213 (340) T ss_pred CCEEEEECCCCCCCCCHHHHHHHHHHHHHHHHHHCC---CCEEEECCCCCCCCCC--------CCCCCHHHHHHHHHCCC T ss_conf 673442327887787245889888789888887548---8605768855778756--------74201368999987389 Q ss_pred CCCC-------CCCCCHHHHHHHHHHHHCHHHCCCCCCEEEECCCCC Q ss_conf 6889-------987669999999998619887887886899868844 Q gi|254780462|r 213 NSPL-------KRTVSLEDIGNSALYLLSYLSNGVTGEIHYVDCGYN 252 (267) Q Consensus 213 ~~Pl-------~r~~~~edva~~v~fL~Sd~s~~iTGq~l~VDGG~s 252 (267) T Consensus 214 plPvYGdG~~vRDWlyV~DHcrA~~~VL---~~G~~GE~YNIgg~~E 257 (340) T TIGR01181 214 PLPVYGDGQQVRDWLYVEDHCRAIELVL---EKGRVGEVYNIGGGNE 257 (340) T ss_pred CCCCCCCCCCCEEEEEHHHHHHHHHHHH---HCCCCCCEEECCCCCC T ss_conf 9833017883203245234789999998---2695212564378762

HHsearch alignment for GI: 254780462 and conserved domain: TIGR01181