>cd04723 HisA_HisF Phosphoribosylformimino-5-aminoimidazole carboxamide ribonucleotide (ProFAR) isomerase (HisA) and the cyclase subunit of imidazoleglycerol phosphate synthase (HisF). The ProFAR isomerase catalyzes the fourth step in histidine biosynthesis, an isomerisation of the aminoaldose moiety of ProFAR to the aminoketose of PRFAR (N-(5'-phospho-D-1'-ribulosylformimino)-5-amino-1-(5''-phospho-ribosyl)-4-imidazolecarboxamide). In bacteria and archaea, ProFAR isomerase is encoded by the HisA gene. The Imidazole glycerol phosphate synthase (IGPS) catalyzes the fifth step of histidine biosynthesis, the formation of the imidazole ring. IGPS converts N1-(5'-phosphoribulosyl)-formimino-5-aminoimidazole-4-carboxamide ribonucleotide (PRFAR) to imidazole glycerol phosphate (ImGP) and 5'-(5-aminoimidazole-4-carboxamide) ribonucleotide (AICAR). This conversion involves two tightly coupled reactions in distinct active sites of IGPS. The two catalytic domains can be fused, like in fungi and pl

Probab=98.80 E-value=2.5e-06 Score=60.70 Aligned_cols=182 Identities=14% Similarity=0.155 Sum_probs=129.7 Q ss_pred HHHCCCHHHHHHHHHHHHHCCCCEEEEEEECCEECCCCCCCHHHHHHHHHCCCCEEEEEEEEEECCHHHHHHCCCCCCEE Q ss_conf 06325889999999999965998999973426345843417899998641256416856788512033676404776079 Q gi|254780975|r 10 SILAADFSRLGEEISNITKAGAKQIHFDVMDGCFVPNISFGADVIRSLRSYSDSVFDCHLMISSIDSHINIIADAGCDII 89 (224) Q Consensus 10 Sil~~d~~~l~~~i~~l~~~~~d~iHiDImDg~fvpn~~~~~~~i~~i~~~t~~~~dvHLMv~~P~~~i~~~~~~g~d~i 89 (224) T Consensus 31 ~~~~~dP~~~a~~~---~~~ga~~lhivDLda~~--g~~~n~~~I~~i~~~~~~pi~vGGGIrs-~~~~~~~l~~Gadkv 104 (233) T cd04723 31 LCSTSDPLDVARAY---KELGFRGLYIADLDAIM--GRGDNDEAIRELAAAWPLGLWVDGGIRS-LENAQEWLKRGASRV 104 (233) T ss_pred CCCCCCHHHHHHHH---HHCCCCEEEEEECCCCC--CCCCHHHHHHHHHHHCCCCEEEECCCCC-HHHHHHHHHCCCCEE T ss_conf 30587999999999---98798989999786546--9975399999999878998899702276-999999986072015 Q ss_pred EEECCCCCCHHHHHHHHHHCCC-EEEEEEEC-----------CCCHHHHHHHHHHCCEEEEEEEECCCCCCCCCCHHHHH Q ss_conf 9970664215899986776498-25998523-----------33447899886201402899830677653322013577 Q gi|254780975|r 90 TFHPESSPHIRRSLRTIHAMGK-KTGVAINP-----------ETPVAILEDVIDEIDMILIMTVNPGFGGQQLIESTIPK 157 (224) Q Consensus 90 ~~H~E~~~~~~~~i~~i~~~g~-k~Giai~p-----------~T~~~~i~~~l~~~D~vliM~V~PG~~Gq~f~~~~l~k 157 (224) T Consensus 105 vigs~~~~~-~~~~~~~~~~g~~~ivvslD~k~~~~~~~~~~~~~~~~~~~~~~~~~eii~t~Id~dGt~~G~d~~l~~~ 183 (233) T cd04723 105 IVGTETLPS-DDDEDRLAALGEQRLVLSLDFRGGQLLKPTDFIGPEELLRRLAKWPEELIVLDIDRVGSGQGPDLELLER 183 (233) T ss_pred ECCCHHCCC-HHHHHHHHHHCCCCEEEEEEEECCCCCCCCCCCCHHHHHHHHHHHCCEEEEEEECCCCCCCCCCHHHHHH T ss_conf 245100499-8999999997899989999998997872464348999999999658959998643446567779999999 Q ss_pred HHHHHHHHHCCCCEEEEECCC-CHHHHHHHHHCCCCEEEECHHHHCCC Q ss_conf 899865431386526981589-98899999967998999742663789 Q gi|254780975|r 158 IRQAKALIGKRSISLEVDGGV-TSRNIKSLVQAGADLLVVGSSFFNQK 204 (224) Q Consensus 158 I~~l~~~~~~~~~~I~vDGGv-n~~~i~~l~~~Gad~~V~Gsaif~~~ 204 (224) T Consensus 184 i~~---~---~~~pvi~sGGv~s~~di~~l~~~g~~gvivg~alh~g~ 225 (233) T cd04723 184 LAA---R---ADIPVIAAGGVRSVEDLELLKKLGASGALVASALHDGG 225 (233) T ss_pred HHH---H---CCCCEEEECCCCCHHHHHHHHHCCCCEEEEEHHHHCCC T ss_conf 998---6---89989998899999999999978998999863977899

HHsearch alignment for GI: 254780975 and conserved domain: cd04723