HHsearch alignment for GI: 255764490 and conserved domain: TIGR02418

>TIGR02418 acolac_catab acetolactate synthase, catabolic; InterPro: IPR012782 Acetolactate synthase is a thiamin pyrophosphate-dependent enzyme that combines two molecules of pyruvate to yield 2-acetolactate with the release of CO2. It exists in two distinct forms that have different properties, though they are clearly related , . The biosynthetic form, found in plants, fungi and bacteria, is involved in the biosynthesis of branched-chain amino acids and contains non-catalytic FAD. The catabolic form is found only in some bacteria, participates in butanediol fermentation, and does not contain FAD. This entry represents the catabolic form of acetolactate synthase, generally found in species that posses acetolactate decarboxylase, which is often encoded in the same operon. The enzyme is thought to be a homotetramer, though this has not conclusively been shown. Each monomer consists of three distinct domains, designated, starting from the N-terminus, as alpha, beta and gamma . The core of the alpha and gamma domains is a six-stranded parallel beta sheet surrounded by alpha helices, while the the beta domain forms a double Rossman fold. The thiamin pyrophosphate cofactor has an unusual conformation that has not been seen in other enzymes using this cofactor, including the biosynthetic form of acetolactate synthase. The active site is located in a funnel at the dimer interface, bordered by residues from all three domains.; GO: 0000287 magnesium ion binding, 0003984 acetolactate synthase activity, 0030976 thiamin pyrophosphate binding, 0050660 FAD binding.
Probab=98.45  E-value=7.1e-08  Score=70.60  Aligned_cols=119  Identities=23%  Similarity=0.390  Sum_probs=84.9

Q ss_pred             CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCHHHHHHHHHHHHCCCHHHHHHH-C-CCCCCC-----
Q ss_conf             123676674667674325431001123344443310256654302456765443211401110221-0-343444-----
Q gi|255764490|r  151 NGFYGGHGIVGAQVSLGTGIAFANKYRRSDKICVVCFGDGAANQGQVYESFNIAALWNLNVIYVIE-N-NQYAMG-----  223 (364)
Q Consensus       151 ~~~~~~~~~vg~~~p~A~G~A~a~k~~~~~~v~v~~~GDGa~~eG~f~Ealn~A~~~~lPvifvve-n-N~~ais-----  223 (364)
T Consensus       409 R~lLiSNGmQ--TlGVALPWAI~AaLlrP~~KVVSVSGDGGFLfSs-mE-LETAVRLk~nIvHIiWnDn~~YnMV~fQE~  484 (553)
T TIGR02418       409 RHLLISNGMQ--TLGVALPWAIGAALLRPNTKVVSVSGDGGFLFSS-ME-LETAVRLKLNIVHIIWNDNNKYNMVEFQEE  484 (553)
T ss_pred             CEEEEECCCC--HHHHHHHHHHHHHHHCCCCEEEEEECCCCHHHHH-HH-HHHHHHHHCCEEEEEEECCCCCCHHHHHHH
T ss_conf             4024335750--3111218999999738897589987283120025-78-899998408948999704899766789776


Q ss_pred             CCCC-CC----CCCCCHHHHHHHHHHHHHHHHCCHHHHHHHHHHHH--CCCCCCCCCCEEEEE
Q ss_conf             4432-32----14864357777763111121000023368875421--024554546558983
Q gi|255764490|r  224 TSVS-RA----SAQTNFSKRGVSFNIPGMQVDGMDIRAVKATMDKA--VAYCRAHKGPIIIEM  279 (364)
Q Consensus       224 t~~~-~~----~~~~~i~~ra~~~gi~~~~vDG~D~~~v~~~~~~a--~~~~r~~~gP~lie~  279 (364)
T Consensus       485 ~KY~GR~sGVdFGpvDfvkYAESFGA~GlrV~~~d--~L~~tLr~Ali~~----~eGPvvvdi  541 (553)
T TIGR02418       485 MKYKGRSSGVDFGPVDFVKYAESFGAKGLRVESPD--ELEPTLRQALIME----VEGPVVVDI  541 (553)
T ss_pred             HCCCCCCCCEEECCCCCEEECCCCCCCCCCCCCHH--HHHHHHHHHCEEC----CCCCEEEEE
T ss_conf             32355201310066050210102484324328978--9999987412022----788889984