>TIGR01692 HIBADH 3-hydroxyisobutyrate dehydrogenase; InterPro: IPR011548 3-hydroxyisobutyrate dehydrogenase is an enzyme that catalyzes the NAD+-dependent oxidation of 3-hydroxyisobutyrate to methylmalonate semialdehyde of the valine catabolism pathway. In Pseudomonas aeruginosa, 3-hydroxyisobutyrate dehydrogenase (mmsB) is co-induced with methylmalonate-semialdehyde dehydrogenase (mmsA) when grown on medium containing valine as the sole carbon source. The positive transcriptional regulator of this operon (mmsR) is located upstream of these genes and has been identified as a member of the XylS/AraC family of transcriptional regulators . 3-hydroxyisobutyrate dehydrogenase shares high sequence homology to the characterised 3-hydroxyisobutyrate dehydrogenase from rat liver with conservation of proposed NAD+ binding residues at the N-terminus (G-8,10,13,24 and D-31). This enzyme belongs to the 3-hydroxyacid dehydrogenase family, sharing a common evolutionary origin and enzymatic mechanism with 6-phosphogluconate . HIBADH exhibits sequence similarity to the NAD binding domain of 6-phosphogluconate dehydrogenase. ; GO: 0008442 3-hydroxyisobutyrate dehydrogenase activity, 0051287 NAD binding.

Probab=97.89 E-value=0.00012 Score=49.82 Aligned_cols=191 Identities=16% Similarity=0.168 Sum_probs=140.5 Q ss_pred EECCCHHHHHHHHHHHHCCCCEEEEEECCHHHHHHHHHCCCCCCCCCCCCCCCCEEEEECHHHHHHHHHHHCCCCHH-HH Q ss_conf 97788789999999997799818999449899999997789842279881787438973168775555441122177-76 Q gi|254781039|r 9 VIGAGAFGTALSSVIASRGLANVTLLGRKEILMQQLEDTRINAKALPGIKLSPLLNFSSDHTLLQNADIVLFATSSK-GY 87 (329) Q Consensus 9 ViGaGa~GtAlA~~La~~g~~~V~l~~r~~~~~~~i~~~~~n~~~lp~i~l~~~i~~t~~~~~l~~adiIiiavps~-~~ 87 (329) T Consensus 1 FIGLGNMGgPMA~NL~KAG-H~v~~FDL~p~av~~~v~aG~~-------------~A~S~~~a~~~Ad~vITMLPAg~HV 66 (290) T TIGR01692 1 FIGLGNMGGPMAANLLKAG-HAVRVFDLSPKAVEELVEAGAQ-------------AAASAAEAAEGADVVITMLPAGKHV 66 (290) T ss_pred CCCCCCCCHHHHHHHHHHC-CEEEEEECCHHHHHHHHHCCHH-------------CCCCHHHHHCCCCEEEECCCCCHHH T ss_conf 9788888227999986118-7257751788999999960022-------------0545798845588686348860348 Q ss_pred HHHH---HHHHHHCCCCCCEEECCCCCCCCCCCCCCHHHHHHH---HHCCCEECCCCCHHHHHHHHHHHHCCCCCCHHHH Q ss_conf 6655---553320356850552375200025854310123321---0012100128881789987653212467731789 Q gi|254781039|r 88 GEAL---NFYSNWLKESAEIIICSKGFEYNSGMLLSSYSEKVL---PSHSISVLSGPGFARDIAQGLPVGVILSSKNIDI 161 (329) Q Consensus 88 ~~~l---~~i~~~l~~~~~ii~~sKGi~~~t~~~~se~i~~~~---~~~~~~vlsGPs~A~Eia~~~pt~~~ia~~d~~~ 161 (329) T Consensus 67 ~sVY~gd~gIL~~~~K~~LlIDcS-TIDpdsAr~~A~~Aa~~G~~f~DAPV---SGG~GgA~--AGTLtFmV--GG~a~~ 138 (290) T TIGR01692 67 ISVYSGDDGILAKVAKGSLLIDCS-TIDPDSARKVAELAAAHGLVFVDAPV---SGGVGGAR--AGTLTFMV--GGEAEE 138 (290) T ss_pred HHHHHCCHHHHCCCCCCCCEEECC-CCCHHHHHHHHHHHHHCCCCEECCCC---CCCHHHHH--HCCCEEEE--CCCHHH T ss_conf 999833133411367889633245-67867899999999981872103677---75356520--12230564--376535 Q ss_pred HHHHHHHHCCCC-EEEEECCCCCEEEEEEHHHHHHHHHHHHHHHHCCCCHHHHHHHHHHHHHHHHHHHHHCCCHHHHHH Q ss_conf 999997534111-389973886144440002567788997521100380578999999899999999872254455320 Q gi|254781039|r 162 SRRLSKILTTDS-FRVYCSDDRIGVQIGGALKNVIAIASGILKGRGCGDSARAIVMVQGLSEIMKLTEAMNGRADTILR 239 (329) Q Consensus 162 ~~~i~~~~~~~~-~~~~~s~D~~GvE~~galKNv~AIa~Gi~~gl~~g~N~~aal~~~g~~Em~~l~~~~g~~~~t~~g 239 (329) T Consensus 139 F~~~~p~L~~Mg~~~~HcG~~GAG-Q-----------------~AKICNNmlLGIsM~GtaEA~~Lg~klGLdp~~L~~ 199 (290) T TIGR01692 139 FARARPVLEPMGRNIVHCGDHGAG-Q-----------------AAKICNNMLLGISMIGTAEAMALGEKLGLDPKVLFE 199 (290) T ss_pred HHHHHHHHHCCCCCEEEECCCCCC-C-----------------HHHHHHHHHHHHHHHHHHHHHHHHHHCCCCHHHHHH T ss_conf 788999985366656866888875-1-----------------578998899999899999999999861788889999

HHsearch alignment for GI: 254781039 and conserved domain: TIGR01692