EC - Ribose-5-phosphate—ammonia ligase

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IntEnz Enzyme Nomenclature


Accepted name:
ribose-5-phosphate—ammonia ligase
Other names:
5-phosphoribosylamine synthetase
ammonia-ribose 5-phosphate aminotransferase
ribose 5-phosphate aminotransferase
Systematic name:
ribose-5-phosphate:ammonia ligase (ADP-forming)


Links to other databases

Enzymes and pathways: NC-IUBMB , BRENDA , DIAGRAM , ExplorEnz , ENZYME@ExPASy , KEGG , MetaCyc , UniPathway
Structural data: CSA , EC2PDB
Gene Ontology: GO:0050260
CAS Registry Number: 9082-52-4


  1. Reem, G.H.
    Enzymatic synthesis of 5'-phosphoribosylamine from ribose 5-phosphate and ammonia, an alternate first step in purine biosynthesis.
    J. Biol. Chem. 243: 5695-5701 (1968). [PMID: 5699059]

[EC created 1972]