>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=100.00 E-value=0 Score=360.62 Aligned_cols=199 Identities=22% Similarity=0.362 Sum_probs=189.3 Q ss_pred EEECCHHHHHHHHHHHHCCCEEEEEECCHHHHHHHHHHCCCCCCCCEECCCHHHHHHHCCCCCEEEEECCCHHHHHHHH- Q ss_conf 9815711168899999789859997399899999997122112784032898999860577889999769906999999- Q gi|254780716|r 8 IIGLGSMGSNLSLNILDKGFRLAVYNKDFELTDVFIKKISGLSQKVIVTKNLEQMVEAVCKPRKILMMVTDGDPVDQLI- 86 (475) Q Consensus 8 iIGLG~MG~~mA~nL~~~G~~V~vydr~~~~~~~l~~~~~~~~~~~~~~~s~~e~v~~l~~pr~Iil~vp~g~~v~~vi- 86 (475) T Consensus 1 FIGLGNMGgPMA~NL~KAGH~v~~FDL~p~av~~~v~aG~------~~A~S~~~a~~~Ad---~vITMLPAg~HV~sVY~ 71 (290) T TIGR01692 1 FIGLGNMGGPMAANLLKAGHAVRVFDLSPKAVEELVEAGA------QAAASAAEAAEGAD---VVITMLPAGKHVISVYS 71 (290) T ss_pred CCCCCCCCHHHHHHHHHHCCEEEEEECCHHHHHHHHHCCH------HCCCCHHHHHCCCC---EEEECCCCCHHHHHHHH T ss_conf 9788888227999986118725775178899999996002------20545798845588---68634886034899983 Q ss_pred --HHHHHCCCCCCEEEECCCCCHHHHHHHHHHHHHCCCCEECCCCCCCCCCCCCCC-EEEEECCHHHHHHHHHHHHHHHC Q ss_conf --999720789989996798657899999999984799430675467600035684-37884548999888999998750 Q gi|254780716|r 87 --DKLKPLLSPEDILLDGGNSHFCDTQIRSLQLSEKGIYFIGIGVSGGVKGARSGA-SLMVGGNEKAYNRVENILLSISA 163 (475) Q Consensus 87 --~~l~~~l~~g~iiID~sts~~~~t~~~~~~l~~kgi~fid~pVSGG~~gA~~G~-slMvGG~~~~~~~~~piL~~iaa 163 (475) T Consensus 72 gd~gIL~~~~K~~LlIDcSTIDpdsAr~~A~~Aa~~G~~f~DAPVSGG~GgA~AGTLtFmVGG~a~~F~~~~p~L~~Mg~ 151 (290) T TIGR01692 72 GDDGILAKVAKGSLLIDCSTIDPDSARKVAELAAAHGLVFVDAPVSGGVGGARAGTLTFMVGGEAEEFARARPVLEPMGR 151 (290) T ss_pred CCHHHHCCCCCCCCEEECCCCCHHHHHHHHHHHHHCCCCEECCCCCCCHHHHHHCCCEEEECCCHHHHHHHHHHHHCCCC T ss_conf 31334113678896332456786789999999998187210367775356520122305643765357889999853666 Q ss_pred CCCCCCEEEEECCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCHHHHHHHHHH Q ss_conf 15678618985698746789887767878889998999999996428997899999986 Q gi|254780716|r 164 KYQNSPCCALLGPDGSGHFVKMIHNGIEYANMQLIADIYGILRDSLNKNPLEISHLFSK 222 (475) Q Consensus 164 k~~~~~cv~y~G~~GsGh~vKMVhNgIey~~mq~iaE~~~~l~~~~~~~~~~i~~vf~~ 222 (475) T Consensus 152 ~------~~HcG~~GAGQ~AKICNNmlLGIsM~GtaEA~~Lg~k-lGLdp~~L~~i~~~ 203 (290) T TIGR01692 152 N------IVHCGDHGAGQAAKICNNMLLGISMIGTAEAMALGEK-LGLDPKVLFEIANT 203 (290) T ss_pred C------EEEECCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHH-CCCCHHHHHHHHHH T ss_conf 5------6866888875157899889999989999999999986-17888899999730

HHsearch alignment for GI: 254780716 and conserved domain: TIGR01692