Protein Family Models

The proteins in this family are OHCU decarboxylase - enzymes of the purine catabolism that catalyse the conversion of OHCU into S(+)-allantoin [1]. This is the third step of the conversion of uric acid (a purine derivative) to allantoin. Step one is catalysed by urate oxidase (Pfam:PF01014) and step two is catalysed by HIUases (Pfam:PF00576). [1]. 16462750. Completing the uric acid degradation pathway through phylogenetic comparison of whole genomes. Ramazzina I, Folli C, Secchi A, Berni R, Percudani R;. Nat Chem Biol. 2006;2:144-148. (from Pfam)

Date:

2024-10-16

2-oxo-4-hydroxy-4-carboxy-5-ureidoimidazoline decarboxylase catalyzes the decarboxylation of 2-oxo-4-hydroxy-4-carboxy-5-ureidoimidazoline (OHCU) into S(+)-allantoin, the third step of the conversion of uric acid (a purine derivative) to allantoin

Date:

2021-02-01

Previously thought to only proceed spontaneously, the decarboxylation of 2-oxo-4-hydroxy-4-carboxy--5-ureidoimidazoline (OHCU) has been recently been shown to be catalyzed by this enzyme in Mus musculus [1]. Homologs of this enzyme are found adjacent to and fused with uricase in a number of prokaryotes and are represented by this model. This model is a separate (but related) clade from that represented by TIGR3164. This model places a second homolog in streptomyces species which (are not in the vicinity of other urate catabolism associated genes) below the trusted cutoff.

Gene:

uraD

Date:

2021-04-27

Date:

2020-10-26