Characterisation, cloning and integrative properties of the gene encoding urate oxidase in Aspergillus nidulans.

A number of mutations have been obtained which define the structural gene (uaZ) coding for urate oxidase in linkage group I of Aspergillus nidulans. This gene has been cloned by transformation of a uaZ- null mutant. A chromosome I/VIII translocation which splits the gene has been defined both genetically and physically. All known mutations are contained in a 1-kb fragment, itself contained in the probe which recognizes a 1.2-kb inducible message. Plasmids carrying uaZ show a strict bias towards homologous recombination in transformation experiments.