>TIGR00175 mito_nad_idh isocitrate dehydrogenase, NAD-dependent; InterPro: IPR004434 Several NAD- or NADP-dependent dehydrogenases, including 3-isopropylmalate dehydrogenase, tartrate dehydrogenase, and the multimeric 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. Mitochondrial NAD-dependent isocitrate dehydrogenases (IDH) resemble prokaryotic NADP-dependent IDH and 3-isopropylmalate dehydrogenase (an NAD-dependent enzyme) more closely than they resemble eukaryotic NADP-dependent IDH. The mitochondrial NAD-dependent isocitrate dehydrogenase is believed to be an alpha(2)-beta-gamma heterotetramer. All subunits are homologous and belog to this group. The NADP-dependent IDH of Thermus thermophilus strain HB8 resembles these NAD-dependent IDH, except for the residues involved in cofactor specificity, much more closely than it resembles other prokaryotic NADP-dependent IDH, including that of Thermus aquaticus. ; GO: 0004449 isocitrate dehydrogenase (NAD+) activity, 0006099 tricarboxylic acid cycle, 0005739 mitochondrion.

Probab=100.00 E-value=0 Score=798.88 Aligned_cols=331 Identities=22% Similarity=0.268 Sum_probs=300.3 Q ss_pred CCCEEEECCCCCCHHHHHHHHHHHHCCCCCCEEEEEECCHHHHHHHCCCCCHHHHHHH-HHCCEEEECCCC---CCCCCC Q ss_conf 3867997598630899999999984179984489982748998652862778999999-865938872644---898544 Q gi|254780902|r 7 TKPVVSLDGDEMTRIIWQLIQENLIHPYLDIKIEYFDLSIQNRDLTDDQVTIDAAHAI-KNCGVGIKCATI---TADQAR 82 (412) Q Consensus 7 ~~~Iv~l~GDgiG~Ei~~~~l~vl~~~~~~i~~e~~d~G~~~~d~tg~~l~~da~eai-k~~~v~lkg~~~---tP~~~~ 82 (412) T Consensus 3 ~~tVTlIPGDGIGPE~~~~V~~If~~~~~PI~fE~~dv~~~~~~~~~~~~~~~A~~SiG~rN~VaLKG~l~esaTp~~-- 80 (348) T TIGR00175 3 KYTVTLIPGDGIGPEISGAVKEIFKAANVPIDFEEIDVSAIETDGKKSEIPDEAVESIGRRNKVALKGNLEESATPIG-- 80 (348) T ss_pred CEEEEEECCCCCCHHHHHHHHHHHHHCCCCEEEEEEECCCCCCCCCCCCCHHHHHHHHCCCCCCCCCCCCHHHCCCCC-- T ss_conf 537898548884444688899999965897358878435553587666774799997200287203556322233577-- Q ss_pred CCCCCCCCCCCCHHHHHHHHCCCEEEEEEEEECCCCCCCCCC--CCCEEEEECCCCCCCCCCEEEECCCCEEEEEEECCC Q ss_conf 321124422110458989732966883058804878778887--786799850566630010147778845999995488 Q gi|254780902|r 83 VKEFNLKKMWKSPNGTIRNILGGIIFREPIICSNVPRLIPGW--KKPIIIGRHAFGDQYRATDFQFPSKGKLILKFVGDD 160 (412) Q Consensus 83 ~~~~~l~~~~~S~n~~LR~~ldl~~~~rp~~~~~~p~~~~~~--~~divivREnteg~Y~gie~~~~~~~~~~i~~~~~~ 160 (412) T Consensus 81 -----~gP~h~SlN~~LRk~LDLYANVvh--~ksl~G~kTRhG~dvD~v~IRENTEGEYSgLEHe~VPGVVESlK~i--- 150 (348) T TIGR00175 81 -----KGPGHKSLNVALRKELDLYANVVH--CKSLPGIKTRHGEDVDIVIIRENTEGEYSGLEHESVPGVVESLKVI--- 150 (348) T ss_pred -----CCCCCCCHHHHHHHHCCCEEEEEE--EECCCCCCCCCCCCCCEEEEEECCCCCCCCCCEEECCCEEEECHHH--- T ss_conf -----888876146677665071055544--5437882467788643689963477210263417869425610201--- Q ss_pred CCCEEEEEECCCCCCEEEEEECCHHHHHHHHHHHHHHHHHCCC-CEEEEECHHHHHHHHHHHHHHHHHHHHHHCCCCCCC Q ss_conf 8610255412466530101110514688999999999986599-899997426777510899999999986310024542 Q gi|254780902|r 161 GQTIEKEVFDSPGSGIAMAMYNLDDSIRNFARAAMQYALARQL-PLYLSTKDTILKSYDGRFKNIFNEIFEAEFKNQFDE 239 (412) Q Consensus 161 g~~~~~~~~~~~~~~~~~~~~~t~~~i~Riar~AF~~A~~~~~-kvt~v~KaNVlk~tdglf~~~~~eva~~~~~~~~~~ 239 (412) T Consensus 151 ----------------------T~~~seRIA~yAFeyA~~~gRK~VTaVHKANIMKL~DGLFl~~~~eVa~~eYP----- 203 (348) T TIGR00175 151 ----------------------TREKSERIARYAFEYARKNGRKKVTAVHKANIMKLADGLFLEVCREVAKKEYP----- 203 (348) T ss_pred ----------------------HHHHHHHHHHHHHHHHHHCCCCEEEEEECCCHHHHHHHHHHHHHHHHHHHCCC----- T ss_conf ----------------------02457889999999999748964899825101111004789988875553078----- Q ss_pred CCEEHHHHHHHHHHHHHHCCCCCE---EEEECCCCCHHHHHHHHHHHCCCCCCEEEECCCCCCEEEECCCCCCHH---HH Q ss_conf 320002436999999985496651---886321023267888877507532312431279875144212222034---55 Q gi|254780902|r 240 LGITYTHRLIDDMVASSIKWSGGY---IWACKNYDGDVQSDIVAQGFGSLGLMTSVLITADGKTMETEAAHGTVT---RH 313 (412) Q Consensus 240 ~~i~~~~~~vD~~~~~lv~~P~~f---Vivt~NL~GDIlSD~aa~l~GglGlapSanig~~~~~~mfEp~HGSAP---d~ 313 (412) T Consensus 204 -~I~~~~~IvDN~cMq~Vs~P~QFDdaVmVmPNLYG~Il~N~~aGL~GG~Gl~pG~N~G~~ya-~FE~g~r~~g~Gne~- 280 (348) T TIGR00175 204 -DITFEEMIVDNTCMQLVSRPEQFDDAVMVMPNLYGNILSNLAAGLVGGPGLVPGANVGRDYA-VFEPGTRHTGLGNED- 280 (348) T ss_pred -CCCCCCEEEEEHHHCCCCCCCCCCCCEEECCCCCCHHHHHHHHHHHCCCCCCCCCCCCCCEE-EECCCCCCCCCCCHH- T ss_conf -87612034230000146785010774001777650289999988632434477713167436-872466788786477- Q ss_pred HHHHHCCCCCCCCHHHHHHHHHHHHHHHHCCCCCHHHHHHHHHHHHHHHHHHHCC-C-CCHHHHHCCCCCCCCEEHHHHH Q ss_conf 6554248775547279999999999986302573038999999999999999879-8-1632300157888713099999 Q gi|254780902|r 314 YRQHQQGKETSTNSIASIFAWTRGLLHRAKLDENAELKKFAENLERVCIKTVEDG-F-MTKDLALLIGPEQDWLSTTDFI 391 (412) Q Consensus 314 ~g~~iaGk~iA~NP~a~IlS~ammL~hlg~~~~~~~~~~~A~~i~~Av~~~l~~G-~-~T~DLg~~~~~~~~~~~T~ef~ 391 (412) T Consensus 281 ----I~G~~~A-NPTA~iLss~~MLnHLg-------L~~~A~~I~~AV~~tI~eGPk~~T~DlG-------G~atT~dft 341 (348) T TIGR00175 281 ----IAGKNIA-NPTALILSSVMMLNHLG-------LKEYADRIRKAVLATIAEGPKVRTKDLG-------GNATTSDFT 341 (348) T ss_pred ----HHCCCCC-CHHHHHHHHHHHHHHCC-------CHHHHHHHHHHHHHHHHCCCCCCCCCCC-------CCCCCHHHH T ss_conf ----7168874-56899999998875348-------6458999999889987337554476657-------766318899 Q ss_pred HHHHHHH Q ss_conf 9999999 Q gi|254780902|r 392 EKISDNL 398 (412) Q Consensus 392 daI~~~l 398 (412) T Consensus 342 ~avi~~l 348 (348) T TIGR00175 342 EAVIKRL 348 (348) T ss_pred HHHHHHC T ss_conf 9999609

HHsearch alignment for GI: 254780902 and conserved domain: TIGR00175