CATH Classification

Domain Context

CATH Clusters

Superfamily 3.40.50.1970
Functional Family

Enzyme Information

5.4.99.18
5-(carboxyamino)imidazole ribonucleotide mutase.
based on mapping to UniProt Q58033
5-carboxyamino-1-(5-phospho-D-ribosyl)imidazole = 5-amino-1-(5-phospho-D- ribosyl)imidazole-4-carboxylate.
-!- In eubacteria, fungi and plants, this enzyme, along with EC 6.3.4.18, is required to carry out the single reaction catalyzed by EC 4.1.1.21 in vertebrates. -!- In the absence of EC 6.3.2.6, the reaction is reversible. -!- The substrate is readily converted into 5-amino-1-(5-phospho-D- ribosyl)imidazole by non-enzymic decarboxylation.

UniProtKB Entries (1)

Q58033
PURE_METJA
Methanocaldococcus jannaschii DSM 2661
N5-carboxyaminoimidazole ribonucleotide mutase

PDB Structure

PDB 2YWX
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Crystal structure of phosphoribosylaminoimidazole carboxylase catalytic subunit from Methanocaldococcus jannaschii
Kanagawa, M., Baba, S., Kuramitsu, S., Yokoyama, S., Kawai, G., Sampei, G.
To be Published