Information on EC 4.1.1.21 - phosphoribosylaminoimidazole carboxylase

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EC Tree
     4 Lyases
         4.1 Carbon-carbon lyases
             4.1.1 Carboxy-lyases
                4.1.1.21 phosphoribosylaminoimidazole carboxylase
IUBMB Comments
While this is the reaction that occurs in vertebrates during purine biosynthesis, two enzymes are required to carry out the same reaction in Escherichia coli, namely EC 6.3.4.18, 5-(carboxyamino)imidazole ribonucleotide synthase and EC 5.4.99.18, 5-(carboxyamino)imidazole ribonucleotide mutase . 5-Carboxyamino-1-(5-phospho-D-ribosyl)imidazole is not a substrate.
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Word Map
  • 4.1.1.21
  • saicars
  • n5-cair
  • phosphoribosylaminoimidazolesuccinocarboxamide
  • 4-carboxy-5-aminoimidazole
  • 6.3.2.6
  • aircs
  • n5-carboxyaminoimidazole
  • samdc
  • analysis
The expected taxonomic range for this enzyme is: Eukaryota, Bacteria, Archaea
Synonyms
5-Amino-1-ribosylimidazole 5-phosphate carboxylase, 5-Phosphoribosyl-5-aminoimidazole carboxylase, AdeD, AIR carboxylase, AIRC, aminoimidazole ribonucleotide carboxylase, Carboxylyase, phosphoribosylaminoimidazole, class II PurE, PAICS, phosphoribosylaminoimidazole carboxylase/phosphoribosylaminoimidazole succinocarboxamide synthetase, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
5-amino-1-(5-phospho-D-ribosyl)imidazole-4-carboxylate = 5-amino-1-(5-phospho-D-ribosyl)imidazole + CO2
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