Conserved Site

Phosphoribosylglycinamide synthetase, conserved site (IPR020559)

Short name: PRibGlycinamide_synth_CS


Phosphoribosylglycinamide synthetase (EC: (GARS) (phosphoribosylamine glycine ligase) [PMID: 2687276] catalyses the second step in the de novo biosynthesis of purine. The reaction catalysed by phosphoribosylglycinamide synthetase is the ATP-dependent addition of 5-phosphoribosylamine to glycine to form 5'phosphoribosylglycinamide: ATP + 5-phosphoribosylamine + glycine = ADP + Pi + 5'-phosphoribosylglycinamide In bacteria, GARS is a monofunctional enzyme (encoded by the purD gene). In yeast, GARS is part of a bifunctional enzyme (encoded by the ADE5,7 gene) in conjunction with phosphoribosylformylglycinamidine cyclo-ligase (AIRS) [PMID: 3097325]. In higher eukaryotes, GARS is part of a trifunctional enzyme in conjunction with AIRS and with phosphoribosylglycinamide formyltransferase (GART), forming GARS-AIRS-GART [PMID: 2147474].

This signature pattern identifies a highly conserved octapeptide.

GO terms

Biological Process

GO:0009113 purine nucleobase biosynthetic process

Molecular Function

GO:0004637 phosphoribosylamine-glycine ligase activity

Cellular Component

No terms assigned in this category.

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.
PROSITE patterns