>TIGR00169 leuB 3-isopropylmalate dehydrogenase; InterPro: IPR004429 Several NAD- or NADP-dependent dehydrogenases, including 3-isopropylmalate dehydrogenase, tartrate dehydrogenase, and the dimeric forms of isocitrate dehydrogenase, share a nucleotide binding domain unrelated to that of lactate dehydrogenase and its homologs. These enzymes dehydrogenate their substates at a H-C-OH site adjacent to a H-C-COOH site; the latter carbon, now adjacent to a carbonyl group, readily decarboxylates. Among these decarboxylating dehydrogenases of hydroxyacids, overall sequence homology indicates evolutionary history rather than actual substrate or cofactor specifity, which may be toggled experimentally by replacement of just a few amino acids. 3-isopropylmalate dehydrogenase is an NAD-dependent enzyme and should have a sequence resembling HGSAPDI around residue 340. The subtrate binding loop should include a sequence resembling E[KQR]X(0,1)LLXXR around residue 115.; GO: 0003862 3-isopropylmalate dehydrogenase activity, 0009098 leucine biosynthetic process, 0005737 cytoplasm.

Probab=100.00 E-value=0 Score=772.48 Aligned_cols=340 Identities=19% Similarity=0.193 Sum_probs=295.4 Q ss_pred CEEEECCCCCCHHHHHHHHHHHH-----CCCCCCEEEEEECCHHHHHHHCCCCCHHHHHHHHHCCEEEECCCCCCCCCCC Q ss_conf 67997598630899999999984-----1799844899827489986528627789999998659388726448985443 Q gi|254780902|r 9 PVVSLDGDEMTRIIWQLIQENLI-----HPYLDIKIEYFDLSIQNRDLTDDQVTIDAAHAIKNCGVGIKCATITADQARV 83 (412) Q Consensus 9 ~Iv~l~GDgiG~Ei~~~~l~vl~-----~~~~~i~~e~~d~G~~~~d~tg~~l~~da~eaik~~~v~lkg~~~tP~~~~~ 83 (412) T Consensus 1 ~IaVLPGDGIGPEi~a~Al~VLk~v~e~r~~~~f~f~~~~iGGAAID~~G~PLPeeTl~~c~~aDAvLLGaVGGPkWd~l 80 (370) T TIGR00169 1 KIAVLPGDGIGPEIMASALKVLKAVAEKRFGLKFEFEEHLIGGAAIDATGQPLPEETLKACKEADAVLLGAVGGPKWDNL 80 (370) T ss_pred CEEECCCCCCCHHHHHHHHHHHHHHHHHHCCCEEEECCCCCCCHHHCCCCCCCCHHHHHHHHHCCEEEEECCCCCCCCCC T ss_conf 92562797965548999999975675431154131022442411010467887289999975107077604477334776 Q ss_pred CCCCCCCCCCCHHHHHHHHCCCEEEEEEE-EE-CCCC--CCCCC----CCCCEEEEECCCCCCCCCCEEEECCCCEEEEE Q ss_conf 21124422110458989732966883058-80-4878--77888----77867998505666300101477788459999 Q gi|254780902|r 84 KEFNLKKMWKSPNGTIRNILGGIIFREPI-IC-SNVP--RLIPG----WKKPIIIGRHAFGDQYRATDFQFPSKGKLILK 155 (412) Q Consensus 84 ~~~~l~~~~~S~n~~LR~~ldl~~~~rp~-~~-~~~p--~~~~~----~~~divivREnteg~Y~gie~~~~~~~~~~i~ 155 (412) T Consensus 81 P~~~RPE~--GGLL~lRK~l~LfANLRPa~~~S~~L~~~SPLK~e~~A~GvD~~vVRELTGGiYFG~------------- 145 (370) T TIGR00169 81 PRDQRPEK--GGLLKLRKELDLFANLRPAKVFSDSLEDLSPLKEEIVAKGVDFVVVRELTGGIYFGE------------- 145 (370) T ss_pred CCCCCCCC--CCHHHHHHHCCCCCCCCCCHHHHHHHHHHCCCCHHHHHCCCCEEEEEECCCCCCCCC------------- T ss_conf 76678875--542677753685021475022104466215773577556833799863368501574------------- Q ss_pred EECCCCCCEEEEEECCCCCCEEEEEECCHHHHHHHHHHHHHHHHHCCC--CEEEEECHHHHHHHHHHHHHHHHHHHHHHC Q ss_conf 954888610255412466530101110514688999999999986599--899997426777510899999999986310 Q gi|254780902|r 156 FVGDDGQTIEKEVFDSPGSGIAMAMYNLDDSIRNFARAAMQYALARQL--PLYLSTKDTILKSYDGRFKNIFNEIFEAEF 233 (412) Q Consensus 156 ~~~~~g~~~~~~~~~~~~~~~~~~~~~t~~~i~Riar~AF~~A~~~~~--kvt~v~KaNVlk~tdglf~~~~~eva~~~~ 233 (412) T Consensus 146 -------P~g~~~~~~G~~~A~dT~~Y~~~Ei~RIaR~AFe~A~kr~~P~~vTSvDKANVL~-sS~LWR~~V~e~~~~eY 217 (370) T TIGR00169 146 -------PKGREGAEEGEGEAVDTEVYTKPEIERIARVAFEMARKRRKPLKVTSVDKANVLE-SSRLWRKTVEEIAKEEY 217 (370) T ss_pred -------CCCCCCCCCCCCEECCCCCCCHHHHHHHHHHHHHHHHHCCCCCCEEEECHHHHHH-HHHHHHHHHHHHHHCCC T ss_conf -------1466666666411203411322356789999999998548898532100120455-43789999999984688 Q ss_pred CCCCCCCCEEHHHHHHHHHHHHHHCCCCCE--EEEECCCCCHHHHHHHHHHHCCCCCCEEEECCC------CCCEEEECC Q ss_conf 024542320002436999999985496651--886321023267888877507532312431279------875144212 Q gi|254780902|r 234 KNQFDELGITYTHRLIDDMVASSIKWSGGY--IWACKNYDGDVQSDIVAQGFGSLGLMTSVLITA------DGKTMETEA 305 (412) Q Consensus 234 ~~~~~~~~i~~~~~~vD~~~~~lv~~P~~f--Vivt~NL~GDIlSD~aa~l~GglGlapSanig~------~~~~~mfEp 305 (412) T Consensus 218 Pd------v~L~H~yiDnAAM~Lvk~P~~fDGV~vT~N~FGDIlSDeAsvi~GSLGmLPSASL~~~~~K~~~g-~~L~EP 290 (370) T TIGR00169 218 PD------VELEHQYIDNAAMQLVKSPRQFDGVVVTGNLFGDILSDEASVITGSLGMLPSASLGSLVDKEEDG-FGLFEP 290 (370) T ss_pred CC------EEECCCHHHHHHHHHHCCCCCCCCEEEECCCCCHHHHHHHHHHCCHHHHHHHHHHCCCCCCCCCC-CEECCC T ss_conf 80------57302158788767532865048667726533006888887630122323455431457654556-500167 Q ss_pred CCCCHHHHHHHHHCCCCCCCCHHHHHHHHHHHHHHHHCCCCCHHHHHHHHHHHHHHHHHHHC------CCCCHHHHHCCC Q ss_conf 22203455655424877554727999999999998630257303899999999999999987------981632300157 Q gi|254780902|r 306 AHGTVTRHYRQHQQGKETSTNSIASIFAWTRGLLHRAKLDENAELKKFAENLERVCIKTVED------GFMTKDLALLIG 379 (412) Q Consensus 306 ~HGSAPd~~g~~iaGk~iA~NP~a~IlS~ammL~hlg~~~~~~~~~~~A~~i~~Av~~~l~~------G~~T~DLg~~~~ 379 (412) T Consensus 291 ~HGSAPD-----IAGkgiA-NP~A~ILSAAMlLry~f------~~~~~a~~iE~Av~kvL~~tsiGG~G~rT~Dl~---- 354 (370) T TIGR00169 291 VHGSAPD-----IAGKGIA-NPIAQILSAAMLLRYSF------NLEEAADAIEAAVKKVLAETSIGGRGYRTRDLG---- 354 (370) T ss_pred CCCCCCC-----CCCCCCC-CHHHHHHHHHHHHHHHC------CHHHHHHHHHHHHHHHHHHCCCCCCCCCCCCCC---- T ss_conf 8888873-----0357886-56899999999998507------906899999999999865204678876786677---- Q ss_pred CCCCCEEHHHHHHHHHHH Q ss_conf 888713099999999999 Q gi|254780902|r 380 PEQDWLSTTDFIEKISDN 397 (412) Q Consensus 380 ~~~~~~~T~ef~daI~~~ 397 (412) T Consensus 355 ---~~~~~~v~T~~~~e~ 369 (370) T TIGR00169 355 ---SEATTAVGTKEVGEE 369 (370) T ss_pred ---CCCCHHHHHHHHHHC T ss_conf ---756304678998741

HHsearch alignment for GI: 254780902 and conserved domain: TIGR00169