HHsearch alignment for GI: 254780397 and conserved domain: TIGR00169

>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=91.08  E-value=0.27  Score=28.22  Aligned_cols=20  Identities=40%  Similarity=0.722  Sum_probs=16.8

Q ss_pred             CEEEECCCCCCCCHHHHHHHHC
Q ss_conf             3899718987747899999842
Q gi|254780397|r    6 PLILTQGDPAGIGPDISLKAWA   27 (343)
Q Consensus         6 pI~IT~GDPaGIGpEIilKal~   27 (343)
T Consensus         1 ~IaVLPGD--GIGPEi~a~Al~   20 (370)
T TIGR00169         1 KIAVLPGD--GIGPEIMASALK   20 (370)
T ss_pred             CEEECCCC--CCCHHHHHHHHH
T ss_conf             92562797--965548999999