HHsearch alignment for GI: 254780900 and conserved domain: TIGR00036

>TIGR00036 dapB dihydrodipicolinate reductase; InterPro: IPR011770 Dihydrodipicolinate reductase is an enzyme found in bacteria and higher plants which is involved in the biosynthesis of diaminopimelic acid, a component of bacterial cell walls, and the essential amino acid L-lysine. It catalyses the the reduced pyridine nucleotide-dependent reduction of the alpha,beta-unsaturated cyclic imine, dihydrodipicolinate, to generate tetrahydrodipicolinate as shown below : 2,3-dihydrodipicolinate + NAD(P)H = 2,3,4,5-tetrahydrodipicolinate + NAD(P)(+) As this enzyme is not found in mammals it is a potential target for the development of novel antibacterial and herbicidal compounds. The structures of the Escherichia coli (P04036 from SWISSPROT) and Mycobacterium tuberculosis (P72024 from SWISSPROT) enzymes have been determined , . The enzyme is a homotetramer where each monomer is composed of two domains, an N-terminal NAD(P)H-binding domain which forms a Rossman fold, and a C-terminal substrate-binding domain that forms an open, mixed alpha-beta sandwich.Tetramerisation occurs exclusively through interactions between C-terminal domain residues. Both enzymes show relatively little preference for either NADH or NADPH as cofactor. Conformational changes upon substrate binding bring the cofactor and substrate into close proximity and allow catalysis to occur. ; GO: 0008839 dihydrodipicolinate reductase activity, 0009089 lysine biosynthetic process via diaminopimelate, 0005737 cytoplasm.
Probab=98.01  E-value=0.00028  Score=50.11  Aligned_cols=134  Identities=23%  Similarity=0.297  Sum_probs=95.4

Q ss_pred             CEEEEEEC-CCHHHHHHHHHHHHHHHHHHHHCCCCEEEEEEEECCCCCCCCCCC--------CCCHHCCCHHH--HHC--
Q ss_conf             26999982-566789999999998999999739965999998268520027887--------71022078889--844--
Q gi|254780900|r    4 VLKVGVAG-LGTVGSALIRSIQKREGRFKDLDQHSFVVSAISARDKNIDRGIDC--------LRYEWFDDPLI--MAG--   70 (438)
Q Consensus         4 ~ikIgiiG-~G~VG~~~~~~l~~~~~~l~~~~g~~i~i~~i~~r~~~k~~~~~~--------~~~~~~~d~~~--li~--   70 (438)
T Consensus         1 ~ikvav~GA~GRMG~~~ik~~~~~y--------e~l~Lv~A~~~~~~~~~G~D~GEl~g~g~~gv~v~~~~~~~~~l~~~   72 (281)
T TIGR00036         1 LIKVAVAGAAGRMGRELIKAVLQAY--------EGLKLVAAFERHGSSLQGTDIGELAGIGKVGVPVTDDLEAVLVLAFT   72 (281)
T ss_pred             CCCEEEECCCCHHHHHHHHHHHHHC--------CCEEEEEEEEECCCCCCCCCCEEEECCCCCCCCHHHHHHHHHHHHHH
T ss_conf             9835884788734699999999748--------98167888861688856654202422554784100057889998740


Q ss_pred             CCCCCEEEECCCCCCCCHHHHHHHHHHCCEEEEEECHHHHHHHHHHHHHHHHHCCCEEEEECCCCCHHHHHHHHHHH
Q ss_conf             88998999864888851135788886327028850417788768999987531396699605645301318999876
Q gi|254780900|r   71 EADIDVFVELIGGEDYPAYDAVRIALMRGCHVVTANKALIASHGKDLALLAQKNNAILNFEAAVAGGIPIIRILKNY  147 (438)
Q Consensus        71 ~~~IDvVVEliGg~~~pA~~~i~~AL~~GkhVVTANKallA~~g~eL~~lA~~~gv~l~~easV~ggiPii~~l~~~  147 (438)
T Consensus        73 ~~~~DVliDFT~--p~g~~~~~~~a~~~Gv~~V~GTTGf~e~~~~~~~~~a~~~~~~~v~A~NFa~GV~~~~K~~~~  147 (281)
T TIGR00036        73 ETKPDVLIDFTT--PEGVVENVKIALENGVRLVVGTTGFSEEDLQELRDLAEKKGVAAVIAPNFAIGVNLMFKLLEK  147 (281)
T ss_pred             CCCCCEEEECCC--CHHHHHHHHHHHHCCCEEEECCCCCCHHHHHHHHHHHHHCCCCEEEECCCHHHHHHHHHHHHH
T ss_conf             236864787386--056789999999668855771668998999999999986499789846506899999999999