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bifunctional phosphoribosyl-AMP cyclohydrolase/phosphoribosyl-ATP diphosphatase
bifunctional phosphoribosyl-AMP cyclohydrolase/phosphoribosyl-ATP diphosphatase catalyzes the irreversible hydrolysis of phosphoribosyl-ATP (PRATP) to phosphoribosyl-AMP (PRAMP) and pyrophosphate, and the hydrolysis of the adenine ring of PRAMP, the second and third steps in histidine biosynthesis, respectively
phosphoribosyl-ATP diphosphatase
This enzyme, phosphoribosyl-ATP pyrophosphohydrolase, catalyses the second step in the histidine biosynthesis pathway. It often occurs as a fusion protein. This model a somewhat narrower scope than Pfam model PF01503, as some paralogs that appear to be functionally distinct are excluded from this model.
bifunctional phosphoribosyl-AMP cyclohydrolase/phosphoribosyl-ATP diphosphatase HisIE
Catalyzes the formation of 1-(5-phosphoribosyl)-AMP from 1-(5-phosphoribosyl)-ATP and the subsequent formation of 1-(5-phosphoribosyl)-5-((5-phosphoribosylamino)methylideneamino)imidazole-4-carboxamide from 1-(5-phosphoribosyl)-AMP in histidine biosynthesis
phosphoribosyl-AMP cyclohydrolase
Functions in histidine biosynthesis from PRPP; converts 1-(5-phosphoribosyl)-AMP to 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino]imidazole-4-carboxyamide during the histidine biosynthesis pathway; binds zinc and magnesium; forms homodimers
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