HHsearch alignment for GI: 254781018 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=99.90 E-value=4.2e-21 Score=151.74 Aligned_cols=215 Identities=20% Similarity=0.233 Sum_probs=169.1
Q ss_pred CCCCEEEEEECCCCCCCCCCCCHHHHHHHHHHHHHHHCCCCCCHHHHHHHHHHHHHCCCCCCCCHHHHHHHHCCCEEE-E
Q ss_conf 788769999805541038985303789999999998187754025899999986411577877345787653263024-0
Q gi|254781018|r 112 ISCGISLDLHSTIPIGSGFGSSSAIISALSLALSSITHQPFCNKEKLIAETGYIERLQHGKTGIIDSTTIVMGGIIYI-N 190 (337)
Q Consensus 112 ~~~g~~i~i~s~iP~~~GLGSSaA~~va~~~al~~~~~~~~~~~~~~~~~a~~~e~~~~~~~sg~D~~~~~~gg~~~~-~ 190 (337)
T Consensus 85 ~~~p~k~~~~~~iP~grGLGSSAaaiVaa~~a~ne~~g~~l~-~~~~L~~a~~~E~~~SGs~HpDNvaPa~~GG~~~~~~ 163 (359)
T TIGR00191 85 FIKPVKLTLEKNIPLGRGLGSSAAAIVAALLAANELAGLPLS-KEELLDLALELEGRISGSIHPDNVAPALLGGFQLAVK 163 (359)
T ss_pred CCCCEEEEEECCCCCCCCCCHHHHHHHHHHHHHHHHHCCCCC-HHHHHHHHHHHHHHCCCCCCHHHHHHHHHCCEEEEEE
T ss_conf 888768998538510136663899999999999998388989-8999999999864305775713467885166279884
Q ss_pred CCCC------------CCCCCC--------------------------CCCEEEEECCCCCCCHHHHHHHHHHHHCCCHH
Q ss_conf 2785------------200147--------------------------88439997497145379999999976412068
Q gi|254781018|r 191 PPQI------------IKNETL--------------------------VGEWWAINTGMPESSTGECVSFVEQHFSQSSI 232 (337)
Q Consensus 191 ~~~~------------~~~~~~--------------------------~~~~~~i~~~~~~~st~~~~~~~~~~~~~~~~ 232 (337)
T Consensus 164 ~~~~Pqeverrei~~~~~~~~P~~GedtGlvPPlPPtdiGrhvkyqWn~~~~~v~aIP~~~~sT~~AR~vLPk~Y~~~d~ 243 (359)
T TIGR00191 164 EDDKPQEVERREIVLLEVLKIPIFGEDTGLVPPLPPTDIGRHVKYQWNSKLKVVLAIPNIEVSTAEARAVLPKAYPRQDL 243 (359)
T ss_pred ECCCCCCHHHHHHHHHHHHCCCCCCCCCCCCCCCCCCCCCCCCEEEECCCCCEEEECCCCCCCHHHHHHHCCCCCCHHHH
T ss_conf 27987611356665666414889876665679778522344200201676517998178420568896205554678899
Q ss_pred HHHHHHHHHHHHHHHHCCC-CHHHHHHHH---HHHHHHHHCCCCCHHHHHHH---HHHHHCCC-EEEECCCCCCCCCEEE
Q ss_conf 9998765489999998387-216899999---95999997189977999999---99985798-0895078867885089
Q gi|254781018|r 233 WSEFNAVTNEMMENIQKKD-AEKTYKSVR---VNQSLLESIGVVPETVGKFI---RCIENNGG-SAKIAGAGSIRGEKAG 304 (337)
Q Consensus 233 ~~~~~~i~~~~~~al~~~d-~~~l~~~~~---~~~~ll~~l~vs~~~l~~l~---~~~~~~g~-~ak~sGAG~~~Gg~~~ 304 (337)
T Consensus 244 v~n~~~l~~-l~~A~~~~dP~~~l~~~~~kD~~hqPyR~~L---~P~l~~i~sCv~~~~~~Ga~~~~iSGsGPT-----i 314 (359)
T TIGR00191 244 VFNLSHLAG-LVHALYQKDPKPDLLAIMMKDRIHQPYRESL---IPNLFKIKSCVQAALEKGALGITISGSGPT-----I 314 (359)
T ss_pred HHHHHHHHH-HHHHHCCCCCHHHHHHHHHCCCCCCCCCCCC---CCHHHHHHHHHHHHHHCCCEEEEECCCCHH-----H
T ss_conf 998877877-7756107996289999973385011634223---614899899999997358648871120105-----5
Q ss_pred EEEEECCC--HHHHHHH--------CCCEEEEEEECCCCEEE
Q ss_conf 99985799--7999974--------59869999987997092
Q gi|254781018|r 305 LVLVGGYN--PEKLSSL--------YGYTCYKIKEDKNGTML 336 (337)
Q Consensus 305 ~~l~~~~~--~~~~~~~--------~~~~~~~~~~~~~G~~i 336 (337)
T Consensus 315 la~~~e~~G~~~~~~~~~~~~~~~~~e~~v~~~~~d~~G~~~ 356 (359)
T TIGR00191 315 LALADEEFGTEQKAQDLLENLHKQGIEGTVHVLEIDTDGARV 356 (359)
T ss_pred HHCCCCCCCHHHHHHHHHHHHHHCCCCCEEEEECCCCCCCEE
T ss_conf 516888877577769998777641653244420233576146