>TIGR00204 dxs 1-deoxy-D-xylulose-5-phosphate synthase; InterPro: IPR005477 DXP synthase is a thiamine diphosphate-dependent enzyme related to transketolase and the pyruvate dehydrogenase E1-beta subunit. DXP synthase is found in bacteria (gene dxs) and plants (gene CLA1) which catalyzes the thiamine pyrophosphoate-dependent acyloin condensation reaction between carbon atoms 2 and 3 of pyruvate and glyceraldehyde 3-phosphate to yield 1-deoxy-D- xylulose-5-phosphate (dxp), a precursor in the biosynthetic pathway to isoprenoids, thiamine (vitamin B1), and pyridoxol (vitamin B6). DXP synthase is evolutionary related to TK. The N-terminal section, contains a histidine residue which appears to function in proton transfer during catalysis . In the central section there are conserved acidic residues that are part of the active cleft and may participate in substrate-binding . This family includes transketolase enzymes 2.2.1.1 from EC. and also partially matches to 2-oxoisovalerate dehydrogenase beta subunit P37941 1.2.4.4 from EC. Both these enzymes utilise thiamine pyrophosphate as a cofactor, suggesting there may be common aspects in their mechanism of catalysis.; GO: 0008661 1-deoxy-D-xylulose-5-phosphate synthase activity, 0016114 terpenoid biosynthetic process.

Probab=99.97 E-value=7.9e-30 Score=228.84 Aligned_cols=316 Identities=20% Similarity=0.342 Sum_probs=254.9 Q ss_pred CCCCCCCC-CCCCCCCCCHHHHHHHHHHHHHHHCCCCCEEEEECCCCCCCCCCCCCCCHHHHCCCCCEECCCCCHHHHHH Q ss_conf 11233331-00000000000000122355443113650699932434458866532364754081110116666278998 Q gi|254780673|r 123 SKNDIQDS-SFAHAPTSSITVREALRDAIAEEMRRDKDVFIMGEEVAEYQGAYKVTQGLLQEFGCERVIDTPITEHGFAG 201 (467) Q Consensus 123 a~~~~~~~-~~~~~~~~~~TvRea~~~a~~e~m~~d~~~~~~gedv~~~~g~f~~t~gl~~~fg~~R~~d~pi~E~~~~G 201 (467) T Consensus 300 ~~~~~~~g~~~~~~~~~~p~~~~~~~~~~~~~~~~~~~~~~~~~~~~~g~g----~~~~~~~~-p~~~~d~~~~~~~~~~ 374 (627) T TIGR00204 300 GPFDLSTGKLLPKSKSAPPSYSKLFGDTLCELAKKDGKIVGITPAMPEGSG----LDKLSDKF-PDRYFDVGIAEQHAVT 374 (627) T ss_pred CCCCCCCCCCCCCCCCCCCCHHHHHHHHHHHHHHCCCCEEEEECCCCCCCC----HHHHHHHH-HHHHHHHHHHHHHHHH T ss_conf 765644331023554556641355556788775305652552012222331----46888750-0345423332345566 Q ss_pred HHHHHHHCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCCCCEEEEE-ECCCCCCCCHHHHHHH-HHHHHHHCCC Q ss_conf 9999887188644566666789999999998788674211776788879983-0244576444433216-8876322031 Q gi|254780673|r 202 IGIGASFAGLKPIVEFMTFNFAMQAIDQIINSAAKTRYMSGGQITTSIVFRG-PNGAAARVAAQHSQCY-AAWYSHVPGL 279 (467) Q Consensus 202 ~a~G~A~~G~~Piv~~~~~~f~~~a~dqi~n~~ak~~~~~gg~~~~p~v~r~-p~G~~~~~g~~Hs~~~-~~~~~~iPgl 279 (467) T Consensus 375 ~~~~~~~~g~~p~~~~y-~~~l~~~yd~~~~d~~~--------~~~p~~~~~d~~g~~g~dg~~~~g~~d~~~~~~~p~~ 445 (627) T TIGR00204 375 LAAGLAIEGYKPFVAIY-STFLQRAYDQVVHDVCI--------QNLPVFFAIDRAGIVGADGETHQGLFDISYLRCIPNL 445 (627) T ss_pred HHHHHHHCCCCHHHHHH-HHHHHHHHHHHHHHHHH--------HHCCCEEEECCCCCCCCCCCCCCCHHHHHHHHHCCCC T ss_conf 66555422430378888-88876666778887776--------3055024412334214776410213556776531300 Q ss_pred EEEEEECCHHCCCHHHHHHHCC-CCEEEECCCCCCCCCC--CCCCCCC--EECCCCCEEEEECCCCCEEEEHHHHHHHHH Q ss_conf 3866522100010555654137-8347640212333334--5334663--121443114443168745860257888888 Q gi|254780673|r 280 KVVIPYTASDAKGLLKAAIRDP-NPVIFLENEILYGSSF--EVPMVDD--LVIPIGRARIHRQGSDVTIISFGIGMTYAT 354 (467) Q Consensus 280 ~V~~P~~~~d~~~ll~~ai~~~-~Pvi~le~~~ly~~~~--~~p~~~~--~~~p~Gk~~i~~~G~ditii~~G~~~~~a~ 354 (467) T Consensus 446 ~~~~p~d~~~~~~~~~~~~~~~~~p~~-----~~~p~g~~~g~~~~~~~~~~~~~g~~~~~~~g~~~~~~~~g~~~~~~~ 520 (627) T TIGR00204 446 VLMAPKDENELRQMLYTGYEYDGGPIA-----VRYPRGNGLGVELTPEPWEGLPIGKSELLRKGGDLLLLGFGTLVPPAL 520 (627) T ss_pred EEECCCCHHHHHHHHHHHHCCCCCCEE-----EECCCCCCCCCCCCCCCCCCCCCCHHHHHCCCCCEEEEECCCHHHHHH T ss_conf 132366345666666531114775204-----531465533343321354322124023103777468873352135788 Q ss_pred HHHHHHHCCCCCEEEEECCCCCCCCHHHHHHHHHHCCCEEEEECCCCCCCHHHHHHHHHHHHHHHHCCCCCEEECCCCCC Q ss_conf 88753100467527973300685799999999987198999957887676789999999996776428982997177788 Q gi|254780673|r 355 KAAIELEKNGIDAELIDLRTIRPMDWQTIFESVKKTGRLVTVEEGYPQSSVGSTIANQVQRKVFDYLDAPILTITGRDVP 434 (467) Q Consensus 355 ~aa~~L~~~gi~~~vid~r~l~Pld~~~i~~sv~kt~~~i~vee~~~~gg~g~~i~~~i~e~~f~~L~~p~~ri~~~d~p 434 (467) T Consensus 521 ~~~~~l~~~~~~~~~~~~~~~~p~d~~~~~~~~~~~~~~~~~~~~~~~gg~g~~~~~~~~~~~--~~~~p~~~~g~pd~~ 598 (627) T TIGR00204 521 EVAEALNEEGLEATLVDLRFVKPLDEELILPLAAPHGKLVTLEENALLGGFGSAVLEFLSDQG--EKLTPLKRLGLPDEF 598 (627) T ss_pred HHHHHHHHCCCEEEEECHHHHCCCCHHHHHHHHHCCCCEEEEECCHHCCCHHHHHHHHHHHCC--CCCCHHHHHCCCHHH T ss_conf 999987533760565200220313468899886303303553011010320468899886247--400024441441244 Q ss_pred CCCCH--HHHHHCCCCHHHHHHHHHHH Q ss_conf 88896--67656089989999999998 Q gi|254780673|r 435 MPYAA--NLEKLALPNVDEIIESVESI 459 (467) Q Consensus 435 ~P~~~--~le~~~~p~~~~I~~av~~v 459 (467) T Consensus 599 ~~~~~~~~~~~~~gl~~~~~~~~~~~~ 625 (627) T TIGR00204 599 IPHGTPEELLADLGLDTAGLADKILAL 625 (627) T ss_pred HCCCCHHHHHHHHCCCHHHHHHHHHHH T ss_conf 315646778876257767889999874

HHsearch alignment for GI: 254780673 and conserved domain: TIGR00204