>smart00861 Transket_pyr Transketolase, pyrimidine binding domain. Transketolase (TK) catalyzes the reversible transfer of a two-carbon ketol unit from xylulose 5-phosphate to an aldose receptor, such as ribose 5-phosphate, to form sedoheptulose 7-phosphate and glyceraldehyde 3- phosphate. This enzyme, together with transaldolase, provides a link between the glycolytic and pentose-phosphate pathways. TK requires thiamine pyrophosphate as a cofactor. In most sources where TK has been purified, it is a homodimer of approximately 70 Kd subunits. TK sequences from a variety of eukaryotic and prokaryotic sources show that the enzyme has been evolutionarily conserved. In the peroxisomes of methylotrophic yeast Hansenula polymorpha, there is a highly related enzyme, dihydroxy-acetone synthase (DHAS) (also known as formaldehyde transketolase), which exhibits a very unusual specificity by including formaldehyde amongst its substrates.

Probab=99.96 E-value=4.6e-29 Score=223.43 Aligned_cols=157 Identities=40% Similarity=0.589 Sum_probs=130.7 Q ss_pred HHHHHHHHHHHHHHCCC-CCEEEEECCCCCC-----CCCCCCCCCHHHHCCCCCEECCCCCHHHHHHHHHHHHHCCCCCH Q ss_conf 00001223554431136-5069993243445-----88665323647540811101166662789989999887188644 Q gi|254780673|r 141 TVREALRDAIAEEMRRD-KDVFIMGEEVAEY-----QGAYKVTQGLLQEFGCERVIDTPITEHGFAGIGIGASFAGLKPI 214 (467) Q Consensus 141 TvRea~~~a~~e~m~~d-~~~~~~gedv~~~-----~g~f~~t~gl~~~fg~~R~~d~pi~E~~~~G~a~G~A~~G~~Pi 214 (467) T Consensus 1 ~~r~a~~~~l~~l~~~~~~~iv~~~~Dl~~~~~~~~~~~f~~~~~~----~~~r~i~~gIaE~~~vg~a~GlA~~G~~pi 76 (168) T smart00861 1 ATRKAFGEALAELAERDPERVVVSGADVGGSTGLDRGGVFPDTKGL----GPGRVIDTGIAEQAMVGFAAGLALAGLRPV 76 (168) T ss_pred CHHHHHHHHHHHHHHHCCCEEEEEEHHHCCCCCCCCCCCCCCCCCC----CCCCEEECCCCHHHHHHHHHHHHHCCCCCC T ss_conf 9189999999999856997199983674887577536610444456----998756448378999998759987599642 Q ss_pred HHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCCCCEEEEEEC-CCCCCCCHH-HHHHHHHHHHHHCCCEEEEEECCHHCCC Q ss_conf 56666678999999999878867421177678887998302-445764444-3321688763220313866522100010 Q gi|254780673|r 215 VEFMTFNFAMQAIDQIINSAAKTRYMSGGQITTSIVFRGPN-GAAARVAAQ-HSQCYAAWYSHVPGLKVVIPYTASDAKG 292 (467) Q Consensus 215 v~~~~~~f~~~a~dqi~n~~ak~~~~~gg~~~~p~v~r~p~-G~~~~~g~~-Hs~~~~~~~~~iPgl~V~~P~~~~d~~~ 292 (467) T Consensus 77 ~~~~~-~f~~~a~~qi~~~~~~--------~~~~~v~~~~~~~~~g~~G~tH~s~~~~~~~~~ip~~~v~~P~~~~e~~~ 147 (168) T smart00861 77 VAIFF-TFFDRAKDQIRSDGAM--------GRVPVVVRHDSGGGVGEDGPTHHSQEDEALLRAIPGLKVVAPSDPAEAKG 147 (168) T ss_pred CCHHH-HHHHHHHHHHHHHHHC--------CCCCEEEEEECEEEECCCCCHHCCCCHHHHHHHCCCCEEEEECCHHHHHH T ss_conf 10235-7887589999865340--------66773788601005668864110444388886179978997099999999 Q ss_pred HHHHHHHCC-CC-EEEECCC Q ss_conf 555654137-83-4764021 Q gi|254780673|r 293 LLKAAIRDP-NP-VIFLENE 310 (467) Q Consensus 293 ll~~ai~~~-~P-vi~le~~ 310 (467) T Consensus 148 ~l~~a~~~~~~p~~i~l~~~ 167 (168) T smart00861 148 LLRAAIRRDDGPPVIRLERK 167 (168) T ss_pred HHHHHHHCCCCCEEEEECCC T ss_conf 99999848899889997389

HHsearch alignment for GI: 254780673 and conserved domain: smart00861