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