>TIGR01949 AroFGH_arch predicted phospho-2-dehydro-3-deoxyheptonate aldolase; InterPro: IPR010210 This entry represents a clade of primarily archaeal sequences related to fructose-bisphosphate aldolase. The members appear to be phospho-2-dehydro-3-deoxyheptonate aldolases. This enzyme is the first step of the chorismate biosynthesis pathway. Evidence for this assignment is based on gene clustering and phylogenetic profiling. A group of species lack members of the three other types of phospho-2-dehydro-3-deoxyheptonate aldolase (represented by IPR006219 from INTERPRO, IPR002480 from INTERPRO and IPR006268 from INTERPRO), and also apparently lack the well-known forms of step 2 (3-dehydroquinate synthase), but contain all other steps of the pathway: Aquifex, Archaeoglobus, Halobacterium, Methanococcus, Methanopyrus and Methanobacterium. In Aquifex, Archaeoglobus, Halobacterium, Methanopyrus and Methanosarcina the genes are clustered with other genes from the chorismate, phenylalanine, tyrosine and tryptophan biosynthesis pathways. In addition, these genes in Archaeoglobus, Halobacterium, and Methanosarcina are adjacent to 3-dehydroquinate synthase (IPR002812 from INTERPRO) which also has the property of having members only in those species which lack steps 1 and 2. Together these two genes appear to perform the synthesis of 3-dehydroquinate. It is presumed that the substrates and the chemical transformations involved are identical, but this has not yet been proven experimentally..

Probab=97.66 E-value=0.00062 Score=41.52 Aligned_cols=132 Identities=18% Similarity=0.269 Sum_probs=86.9 Q ss_pred HHCCCEEEECCCCHHHHHHHCCCCCHHHHHHHHHHHHHHCCCCEEE------EECCCCCCHHHHHHH----HHCCCCEEE Q ss_conf 5089857625320356652068852430799999999873997178------504786688999999----976997999 Q gi|254781020|r 143 VLGADGLFLHLNPLQEIIQPNGNTNFADLSSKIALLSSAMDVPLLL------KEVGCGLSSMDIELG----LKSGIRYFD 212 (337) Q Consensus 143 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~i~~l~~~~~~pii~------k~v~~~~~~~~~~~a----~~aGad~i~ 212 (337) T Consensus 101 ~~GADAVS~HvNvGs~~-----e~d~~~~lg~vA~~ad~~GvPlLAMmYaRG~~i~~e~d~~~v~HAaRlg~ElGADvvK 175 (259) T TIGR01949 101 RLGADAVSIHVNVGSDT-----EADQIEDLGDVAEIADDWGVPLLAMMYARGPRIDDEVDPEVVAHAARLGEELGADVVK 175 (259) T ss_pred HCCCCEEEEEEECCCCC-----CHHHHHHHHHHHHHHHHCCCCHHECCCCCCCCCCCCCCHHHHHHHHHHHHHHCCCEEE T ss_conf 32898679988648987-----3899999989999886548842011278868876644767888887653534577665 Q ss_pred ECCCCCCCCCCHHHHCCCCCCCCHHHHHCCCCHHHHHHHHHHHCCCCEEEECCCCCCH--HH----HHHHHHHCCCEEHH Q ss_conf 4588886510012310234432324431063468899999852289879972988888--99----99999838885233 Q gi|254781020|r 213 IAGRGGTSWSRIESHRDLESDIGIVFQDWGIPTPLSLEMARPYCNEAQFIASGGLRNG--VD----ILKSIILGASLGGL 286 (337) Q Consensus 213 v~~~gG~~~~~~~~~r~~~~~~~~~~~~~gi~~~~al~~~~~~~~~v~IiadGGIr~g--~D----v~kAlalGAdaV~i 286 (337) T Consensus 176 ~~Y~Gd-----~----------------------~SF~~VV~~c-~~PVvvAGG~k~~s~~efLq~v~DA~~aGAAGvs~ 227 (259) T TIGR01949 176 VPYTGD-----I----------------------DSFEEVVKAC-AVPVVVAGGPKLASDREFLQMVKDAMEAGAAGVSV 227 (259) T ss_pred ECCCCC-----H----------------------HHHHHHHCCC-CCCEEEECCCCCCCCHHHHHHHHHHHHHCCCCEEC T ss_conf 143177-----4----------------------6799996217-87778737779887467778899999818782310 Q ss_pred HHHHHHHHCCCHHHHHHHHHHHH Q ss_conf 47999984146689999999999 Q gi|254781020|r 287 ASPFLKPAMDSSDAVVAAIESLR 309 (337) Q Consensus 287 Gr~~l~~~~~G~~gv~~~l~~l~ 309 (337) T Consensus 228 GRnvFqh--~~p~~~~~Av~~iV 248 (259) T TIGR01949 228 GRNVFQH--DTPVAITKAVSAIV 248 (259) T ss_pred CCCCCCC--CCHHHHHHHHHHHC T ss_conf 5630146--88789999998734

HHsearch alignment for GI: 254781020 and conserved domain: TIGR01949