>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=96.52 E-value=0.0045 Score=42.45 Aligned_cols=89 Identities=15% Similarity=0.211 Sum_probs=68.4 Q ss_pred CCHHHHHHHHCCCCCCHHHHHHHHHHHHCCCCCCCCCCCCCHHHHHHHHHHHCCCCCCCCCCCCCCHHHHHHHHH-CCCC Q ss_conf 201455432000122012100135664025774212276610467876667388753025777789989888742-0352 Q gi|254781167|r 134 VALRNLVKSIKKSGVNGIWIHARKAILKGLSPKDNRKIPNLDYDIVYEIKKENPDLFIGLNGGLEDMSQALKILP-SVDG 212 (322) Q Consensus 134 ~~~~~~~~~~~~~g~~~itiH~Rt~~~~g~s~~~~~~~~~~~~~~i~~l~~~~~~~~i~~NGdi~~~~~a~~~l~-~~dg 212 (322) T Consensus 35 ~dP~~~a~~~~~~ga~~lhiv----DLda~---~---g~~~n~~~I~~i~~~~-~~pi~vGGGIrs~~~~~~~l~~Gadk 103 (233) T cd04723 35 SDPLDVARAYKELGFRGLYIA----DLDAI---M---GRGDNDEAIRELAAAW-PLGLWVDGGIRSLENAQEWLKRGASR 103 (233) T ss_pred CCHHHHHHHHHHCCCCEEEEE----ECCCC---C---CCCCHHHHHHHHHHHC-CCCEEEECCCCCHHHHHHHHHCCCCE T ss_conf 799999999998798989999----78654---6---9975399999999878-99889970227699999998607201 Q ss_pred EEEECCCCCHHHHHHHHHHHH Q ss_conf 344122000124399999987 Q gi|254781167|r 213 VMIGRAAYKNSAMLTTVDEYF 233 (322) Q Consensus 213 vMigRga~~~P~if~~I~~~l 233 (322) T Consensus 104 vvigs~~~~~~~~~~~~~~~g 124 (233) T cd04723 104 VIVGTETLPSDDDEDRLAALG 124 (233) T ss_pred EECCCHHCCCHHHHHHHHHHC T ss_conf 524510049989999999978

HHsearch alignment for GI: 254781167 and conserved domain: cd04723