| Type: | Family | Name: | IMP biosynthesis enzyme PurP |
| Description: | The last two steps of de novopurine biosynthesis are: i) conversion of 5-aminoimidazole-4-carboxamide-1-beta-D-ribofuranosyl 5'-monophosphate (AICAR) to 5-formaminoimidazole-4-carboxamide-1-beta-D-ribofuranosyl 5'-monophosphate (FAICAR) ii) conversion of FAICAR to inosine5'-monophopsphate (IMP)In bacteria and eukaryotes, these steps are catalysed by the well-characterised bifunctional enzyme PurH []. Archaea do not appear to posses PurH, however, and perform these reactions by a different mechanism []. In archaea, step i) is catalysed by the well-conserved PurP protein, while step ii) is catalysed by the PurO enzyme in some (though not all) species [, ].This entry represents the 5-formaminoimidazole-4-carboxamide-1-(beta)-D-ribofuranosyl 5'-monophosphate synthetase also known as PurP. | Short Name: | IMP_biosynth_PurP |
