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2 unusual facts about Adenylosuccinate lyase deficiency


Adenylosuccinate lyase deficiency

These two succinylpurines are the dephosphorylated derivatives of SAICA ribotide (SAICAR) and adenylosuccinate (S-AMP), the two substrates of adenylosuccinate lyase (ASL), which catalyzes an important reaction in the de novo pathway of purine biosynthesis.

ASL catalyzes two distinct reactions in the synthesis of purine nucleotides, both of which involve the β-elimination of fumarate to produce either aminoimidazole carboxamide ribotide (AICAR) from SAICAR or adenosine monophosphate (AMP) from S-AMP.



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