HHsearch alignment for GI: 254781016 and conserved domain: TIGR00191

>TIGR00191 thrB homoserine kinase; InterPro: IPR000870 Saccharomyces cerevisiae strains containing the erg8-1 mutation are temperature sensitive for growth due to a defect in phosphomevalonate kinase, an enzyme of isoprene and ergosterol biosynthesis. Subcloning and DNA sequencing have defined the functional ERG8 regulon as an 850bp upstream region and an adjacent 1,272bp open reading frame. The deduced ERG8 protein contains 424 residues and shows no similarity to known proteins, except within a putative ATP-binding domain present in many kinases . Enzymes that share the N-terminal Gly/Ser-rich putative ATP-binding region include galactokinase, homoserine kinase, mevalonate kinase and phosphomevalonate kinase. Homoserine kinase is a homodimeric enzyme involved in threonine biosynthesis. Sequence comparison of the yeast enzyme with the corresponding proteins from bacterial sources reveals the presence of several highly conserved regions, the pattern of occurrence of which suggests that the ancestral sequences might have been composed from separate (functional) domains. A block of similar residues, found towards the C-terminus, is also present in many other proteins involved in threonine (or serine) metabolism; this motif may therefore represent the binding site for the hydroxy-amino acids. Limited similarity was detected between a motif conserved among the homoserine kinases and consensus sequences found in other mono- or dinucleotide-binding proteins .; GO: 0004413 homoserine kinase activity, 0005524 ATP binding, 0006566 threonine metabolic process.
Probab=99.23  E-value=8.5e-10  Score=88.88  Aligned_cols=263  Identities=21%  Similarity=0.217  Sum_probs=162.8

Q ss_pred             CCCCCEEEEECCCCEEEEEEEC-CCC-------CCEEEECCEE---CCCCCH---HHHHHHHHHHHHHHHC-CCEEEEEE
Q ss_conf             7898434681278107999971-788-------8579987872---566520---6899999974216761-94399998
Q gi|254781016|r   48 PLNNSLSLSLGHLGTITHITVI-DSD-------ADCIILNGQK---ISSQSS---FFKKTTQFCDLFRQFS-KVYFLIET  112 (355)
Q Consensus        48 P~n~SiS~TL~~~~T~T~v~~~-~~~-------~d~~~lnG~~---~~~~~~---~~~ri~~~l~~~r~~~-~~~~~I~S  112 (355)
T Consensus        14 pGFD~LG~aL~~~~~~~~~~~~~~e~~~~~nnCk~~~~~~g~~~~~iP~~p~~N~~yq~~~~~~~~~g~~~~~~p~k~~~   93 (359)
T TIGR00191        14 PGFDVLGLALSLYNGLTVTDVVAVESDDTPNNCKFEIEAEGEDVEKIPTEPDDNLIYQVAKRFLDQLGKRNFIKPVKLTL   93 (359)
T ss_pred             CCCCEEECEECCCCCEEEECCCCHHHCCCCCCCEEEEEEECCCCCCCCCCCHHHHHHHHHHHHHHHHCCCCCCCCEEEEE
T ss_conf             44001201003334405504664111058874126888622451258896121056889999999818777888768998


Q ss_pred             ECCCCCCCHHHHHHHHHHHHHHHHHHHHCCCCCHHHHHHHHHH----CCCC-----CHHHHCCCCHHCCCCCCC------
Q ss_conf             5023321101232247999999999981889998899988652----1353-----034310562002578987------
Q gi|254781016|r  113 SNNIPTKAGLASSASGFAALTLALFRIYSIPEKSESLSRVARL----GSGS-----ACRSFYRGFCEWICGTDQ------  177 (355)
Q Consensus       113 ~N~fPtaaGLASSASgfAALa~Al~~~~~~~~~~~~lS~lARl----GSGS-----A~RSi~GG~v~W~~g~~~------  177 (355)
T Consensus        94 ~~~iP~grGLGSSAaaiVaa~~a~ne~~g~~l~~~~~L~~a~~~E~~~SGs~HpDNvaPa~~GG~~~~~~~~~~Pqever  173 (359)
T TIGR00191        94 EKNIPLGRGLGSSAAAIVAALLAANELAGLPLSKEELLDLALELEGRISGSIHPDNVAPALLGGFQLAVKEDDKPQEVER  173 (359)
T ss_pred             ECCCCCCCCCCHHHHHHHHHHHHHHHHHCCCCCHHHHHHHHHHHHHHCCCCCCHHHHHHHHHCCEEEEEEECCCCCCHHH
T ss_conf             53851013666389999999999999838898989999999998643057757134678851662798842798761135


Q ss_pred             ---CCCCEEEEECC--------------------CCCC-CCEEEEEEECCCCCCCCCCHHHHHHHHHCHHHHHHHHHHHH
Q ss_conf             ---65441310156--------------------6686-42158999728766752105679887618568999973055
Q gi|254781016|r  178 ---NGMDSFAVPFN--------------------NQWP-DLRIGLLKIIDREKKIGSREAMEITRHHSPFFTQWTQQIST  233 (355)
Q Consensus       178 ---~~sds~a~~~~--------------------~~~~-dl~~~i~iv~~~~K~vsSt~gm~~~v~tSp~y~~r~~~~~~  233 (355)
T Consensus       174 rei~~~~~~~~P~~GedtGlvPPlPPtdiGrhvkyqWn~~~~~v~aIP~~~---~-sT~~AR~vLPk-~Y~~~d~v~n~~  248 (359)
T TIGR00191       174 REIVLLEVLKIPIFGEDTGLVPPLPPTDIGRHVKYQWNSKLKVVLAIPNIE---V-STAEARAVLPK-AYPRQDLVFNLS  248 (359)
T ss_pred             HHHHHHHHHCCCCCCCCCCCCCCCCCCCCCCCCEEEECCCCCEEEECCCCC---C-CHHHHHHHCCC-CCCHHHHHHHHH
T ss_conf             666566641488987666567977852234420020167651799817842---0-56889620555-467889999887


Q ss_pred             HHHHHHHHHHHCC-HHHHHHHHHHHHHHHHHHHHCCCCCEEEECHHHHHHHHHHHHHHHCCC-EEEEEECCCCEEEEEEC
Q ss_conf             0999999998099-999999999999989998703899568657889999999999742896-19999777981799955
Q gi|254781016|r  234 DLAHIKQAIIDQD-FIKLGEVAEKNALKMHATMIAASPPLLYWQKETIQGMERVWDARQQSI-PIYFTLDAGPNLKLLFT  311 (355)
Q Consensus       234 ~~~~~~~ai~~~D-f~~l~~i~e~dal~mHa~~~~s~P~~~Y~~~~t~~ii~~v~~~R~~g~-~v~fT~DAGPNv~il~~  311 (355)
T Consensus       249 ~l~~l~~A~~~~dP~~~l~~~~~kD--~~hqPyR~~------L~P~l~~i~sCv~~~~~~Ga~~~~iS-GsGPTila~~~  319 (359)
T TIGR00191       249 HLAGLVHALYQKDPKPDLLAIMMKD--RIHQPYRES------LIPNLFKIKSCVQAALEKGALGITIS-GSGPTILALAD  319 (359)
T ss_pred             HHHHHHHHHCCCCCHHHHHHHHHCC--CCCCCCCCC------CCCHHHHHHHHHHHHHHCCCEEEEEC-CCCHHHHHCCC
T ss_conf             7877775610799628999997338--501163422------36148998999999973586488711-20105551688


Q ss_pred             HHH-HHHHHHHHHH
Q ss_conf             898-9999999763
Q gi|254781016|r  312 HKI-EETIKQFFPE  324 (355)
Q Consensus       312 ~~~-~~~i~~~l~~  324 (355)
T Consensus       320 e~~G~~~~~~~~~~  333 (359)
T TIGR00191       320 EEFGTEQKAQDLLE  333 (359)
T ss_pred             CCCCHHHHHHHHHH
T ss_conf             88775777699987