HHsearch alignment for GI: 254780489 and conserved domain: TIGR01835
>TIGR01835 HMG-CoA-S_prok hydroxymethylglutaryl-CoA synthase; InterPro: IPR011554 Synonym(s): 3-hydroxy-3-methylglutaryl-coenzyme A synthase, HMG-CoA synthase. Hydroxymethylglutaryl-CoA synthase (2.3.3.10 from EC) catalyses the condensation of acetyl-CoA with acetoacetyl-CoA to produce HMG-CoA and CoA, the second reaction in the mevalonate-dependent isoprenoid biosynthesis pathway. HMG-CoA synthase contains an important catalytic cysteine residue that acts as a nucleophile in the first step of the reaction: the acetylation of the enzyme by acetyl-CoA (its first substrate) to produce an acetyl-enzyme thioester, releasing the reduced coenzyme A. The subsequent nucleophilic attack on acetoacetyl-CoA (its second substrate) leads to the formation of HMG-CoA . HMG-CoA synthase occurs in eukaryotes, archaea and certain bacteria . In vertebrates, there are two isozymes located in different subcellular compartments: a cytosolic form that is the starting point of the mevalonate pathway (leads to cholesterol and other sterolic and isoprenoid compounds), and a mitochondrial form responsible for ketone body biosynthesis. HMG-CoA is also found in other eukaryotes such as insects, plants and fungi . In bacteria, isoprenoid precursors are generally synthesised via an alternative, non-mevalonate pathway, however a number of Gram-positive pathogens utilise a mevalonate pathway involving HMG-CoA synthase that is parallel to that found in eukaryotes , . This entry represents HMG-CoA synthase enzymes found in a limited spectrum of mostly Gram-positive bacteria, which make isopentenyl pyrophosphate (IPP) via the mevalonate pathway..
Probab=99.96 E-value=5.2e-30 Score=216.00 Aligned_cols=297 Identities=18% Similarity=0.193 Sum_probs=229.6
Q ss_pred EEEEEEEECCCCCCCHHHHHH-----HHCCCHHHEEECCC---CCEEEEECCCCCHHHHHHHHHHHHHHHCCCCCCCCCE
Q ss_conf 999999735886138889998-----80999768311147---5088994898879999999999986430132223442
Q gi|254780489|r 7 CILGFGHAVPNQCIHNSIIER-----HLNLKLGVIEQKTG---IKYRYWAEKHETLTDIAIQAGDIALRNANIKKDSISL 78 (325)
Q Consensus 7 ~I~g~g~~lP~~~i~n~~l~~-----~~~~~~~~i~~~tG---I~~R~~~~~~e~~~~la~~Aa~~aL~~a~~~~~dId~ 78 (325)
T Consensus 2 GI~~I~F~~p~~yl~~~~LAEnPLYF~~gv~p~K~~~GIgatLQ~~~~~~~~~eDiVTmAA~Aa~~Il~~~nLd~~~Id~ 81 (412)
T TIGR01835 2 GIDKISFFTPQYYLDLTALAENPLYFARGVDPEKFSKGIGATLQKKMAVPPIDEDIVTMAASAAKPILDRNNLDKQKIDM 81 (412)
T ss_pred CCCHHHHHCCCCCCCHHHHHHCCHHHHCCCCHHHHHHHHHHHHHHHCCCCCCCCCHHHHHHHHHHHHHHHHCCCCCCCCE
T ss_conf 70112344030003535663041145417664357577436777650689788645788999999743242068442347
Q ss_pred EEEEEEEECCCCCCCCCCCCCCCCCC-CCC-----CCCCCCCCCCCHHHHHHHHHHHHCC-C-CEEEEEEECCCCCCCCC
Q ss_conf 58843100236887432211210023-863-----3342101231012567657887438-8-50588620122444462
Q gi|254780489|r 79 TLLATSTPDHLLPPSSPLITHRLGLM-QSG-----AIDLTGACAGFLYALVMADSYINSH-Q-KPVLIIAANLLSRRINL 150 (325)
Q Consensus 79 ii~~s~t~d~~~P~~a~~v~~~Lg~~-~~~-----~~di~~~C~g~l~aL~~A~~~i~~g-~-~~vLVv~~e~~S~~~d~ 150 (325)
T Consensus 82 Vi~gTESgID~SKAaavyvh~LLgl~p~cRGnnFL~~ElK~ACYGATAaLq~A~~hv~~~P~s~kVLViaSDiAkY~~~t 161 (412)
T TIGR01835 82 VIFGTESGIDQSKAAAVYVHGLLGLQPFCRGNNFLSFELKQACYGATAALQMAKGHVARSPNSRKVLVIASDIAKYGLET 161 (412)
T ss_pred EEEEEECCHHHHHHHHHHHHHHHCCCCCCCCCCEEEEEHHHHHHHHHHHHHHHHHHHHHCCCCCEEEEEEEEEEECCCCC
T ss_conf 89751052668999999999982778431045422432777779999999999999851888660168886311227798
Q ss_pred CCCCCCCCCCCCEEEEEECCCCCCCCCCCEEEEEEECCCCCCEEEEECCCCCCCCCCCCCCCCCCCCCCHHHHHHHCCCH
Q ss_conf 22443432544200112205765444531135532136776527830698667654455655232245145434320100
Q gi|254780489|r 151 EDKDTAIIFGDAAGAVVLAPSPLKDKSGILGIELTSDGSKYDLIKIPTGGSTSPAGTNTHDFYMRITNGADIFYNAVKIM 230 (325)
Q Consensus 151 ~d~~~~~lfGDgA~A~il~~~~~~~~~~il~~~~~s~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~g~~v~~~~~~~~ 230 (325)
T Consensus 162 ~GE~---TQGAGAVA~Li~~dP~-----~l~i~~~~~G----~~T~DimDFWRP~y~~~-----a~VdG~~S~~~Yl~a~ 224 (412)
T TIGR01835 162 PGEA---TQGAGAVAMLISADPK-----LLAINEDSVG----LYTDDIMDFWRPNYSTT-----ALVDGQYSTEQYLNAL 224 (412)
T ss_pred CCCC---CHHHHHHHHHHHCCCH-----HHHCCCCCCC----EECCCCCCCCCCCCCCC-----CEECCCHHHHHHHHHH
T ss_conf 9886---1668999998741801-----2001587653----12133121217898855-----3164604688999999
Q ss_pred HHHHHHHHHHHCCCCCCCCE---EEECCCCCHHHH-HHHHHC---CCCHH--HH-------HHHHH------HCCCCCCC
Q ss_conf 36789889974012001224---630565413899-999971---97865--70-------02185------40933000
Q gi|254780489|r 231 AQSAKQSLRKSDLQPQDINR---FIPHQANSRIIQ-KVCEKI---GLSKR--IM-------VNSLK------DFGNSSSA 288 (325)
Q Consensus 231 ~~~i~~~l~~~gl~~~did~---~i~Hq~~~~~~~-~~~~~l---gi~~~--~~-------~~~l~------~~GN~~sA 288 (325)
T Consensus 225 ~~aW~dy~~~~~~~l~DfaanYR~~fH~PftKMg~Ka~~~~l~~~~~~~~k~~~~~~y~~Si~Y~~Gveaam~vGN~YTG 304 (412)
T TIGR01835 225 EEAWNDYKERTGLSLEDFAANYRFCFHVPFTKMGLKALRHILKKNKEDEDKDSVQKAYEESILYNRGVEAAMEVGNLYTG 304 (412)
T ss_pred HHHHHHHHHHCCCCHHHHHCCCCEEEECCCCCCHHHHHHHHHHCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHCCCHHHH
T ss_conf 99999999723897567531571787078742037999998740478126899999875336785234433330541378
Q ss_pred HHHHHHHHHHHHC---CCCCCCEEEEEEECCCCCC
Q ss_conf 5999999999806---7899989999986155102
Q gi|254780489|r 289 SIPLSLSLENQRK---PFQKGEKILTISCRRGNDR 320 (325)
Q Consensus 289 si~~~L~~~~~~g---~i~~Gd~vll~~~G~G~s~ 320 (325)
T Consensus 305 SlyLgL~sLLena~sk~d~tG~~Igl~SYGSGava 339 (412)
T TIGR01835 305 SLYLGLASLLENAQSKEDLTGDKIGLFSYGSGAVA 339 (412)
T ss_pred HHHHHHHHHHHCCCCCCCCCCCEEEEEECCCCCEE
T ss_conf 89999999863036644313111110012522011