>TIGR01162 purE phosphoribosylaminoimidazole carboxylase, catalytic subunit; InterPro: IPR000031 Phosphoribosylaminoimidazole carboxylase is a fusion protein in plants and fungi, but consists of two non-interacting proteins in bacteria, PurK and PurE. PurK, N5-carboxyaminoimidazole ribonucleotide (N5_CAIR) synthetase, catalyzes the conversion of 5-aminoimidazole ribonucleotide (AIR), ATP, and bicarbonate to N5-CAIR, ADP, and Pi. PurE converts N5-CAIR to CAIR, the sixth step of de novo purine biosynthesis. In the presence of high concentrations of bicarbonate, PurE is reported able to convert AIR to CAIR directly and without ATP. Some members of this family contain two copies of this domain . The crystal structure of PurE indicates a unique quaternary structure that confirms the octameric nature of the enzyme .; GO: 0004638 phosphoribosylaminoimidazole carboxylase activity, 0006189 'de novo' IMP biosynthetic process, 0009320 phosphoribosylaminoimidazole carboxylase complex.

Probab=100.00 E-value=0 Score=450.22 Aligned_cols=158 Identities=58% Similarity=0.928 Sum_probs=156.3 Q ss_pred EEEEECCCCCHHHHHHHHHHHHHCCCCEEEEEEEHHCCHHHHHHHHHHHHHCCC-EEEEEEECCCCCCHHHHHHHCCCCE Q ss_conf 999958816989999999999980998265453010387999988987653598-2999972676685113465224203 Q gi|254780157|r 7 VAIIMGSQSDWKIMKYAADMLDTLGIDYEARIISAHRTPDRLIEFAKNARFEGF-KLIIAGAGGAAHLPGMIAAMTSLPV 85 (165) Q Consensus 7 V~Ii~GS~SD~~~~~~a~~~L~~~gI~~~~~V~SAHR~p~~l~~~~~~~~~~~~-~viIa~AG~aaaLpgvva~~t~~PV 85 (165) T Consensus 1 V~iIMGS~SD~~~m~~a~~~L~~fgi~~e~~V~SAHRTP~~~~~ya~~a~~~G~P~ViIAgAGgaAHLPGmvAa~T~~PV 80 (159) T TIGR01162 1 VGIIMGSDSDLETMKKAAEILEEFGIPYELRVVSAHRTPELMFEYAKEAEERGIPKVIIAGAGGAAHLPGMVAALTTLPV 80 (159) T ss_pred CEEECCCCCCHHHHHHHHHHHHHCCCCEEEEEECCCCCHHHHHHHHHHHHHCCCCEEEEECCCCCCCCCCCCCCCCCCCE T ss_conf 96853672547899999999985599667898606778088999999998678997998403511334010011478775 Q ss_pred EEECCCCCCCCCCCCHHHHHHCCCCCCCEEEECCCCCCHHHHHHHHHHHHCCCHHHHHHHHHHHHHHHHHHHHHHHHCC Q ss_conf 6612577666750016998403569862044316753122899999997069999999999999999999984054067 Q gi|254780157|r 86 LGVPIISQTLGGIDSLLSIVQMPAGVPVGTMAIGQSGAINASLLAVAILALDDKELTDRLNEWRTQQTISISEYPKDIP 164 (165) Q Consensus 86 IgVP~~~~~~~G~dallS~vqMP~Gvpvatv~vg~~~~~NAal~A~~Il~~~d~~i~~kl~~~r~~~~~~v~~~~~~l~ 164 (165) T Consensus 81 IGVPv~~~~l~G~DSLlSiVQMP~GvPVATvaig~aGA~NAAllAa~ILa~~~~~l~~kl~~~~~~~~~~V~~~~~~l~ 159 (159) T TIGR01162 81 IGVPVPSKALSGLDSLLSIVQMPAGVPVATVAIGNAGAKNAALLAAQILAIKDPELAEKLKEYRENQKEKVLKKNEELE 159 (159) T ss_pred EECCCCCCCCCCHHHHHHHHHCCCCCCEEEEECCCHHHHHHHHHHHHHHCCCCHHHHHHHHHHHHHHHHHHHHHHCCCC T ss_conf 5034773424521354454307589746530037132788999999997268988999999999999999873010259

HHsearch alignment for GI: 254780157 and conserved domain: TIGR01162