Heat shock phenomena in Aspergillus nidulans. I. The effect of heat on mycelial protein synthesis.

Heat shock was found to induce characteristic changes in the pattern of protein synthesis in Aspergillus nidulans as analysed by SDS-polyacrylamide gel electrophoresis. Six to seven new bands were found to show increased incorporation to 35S-methionine at 43 degrees C compared to 37 degrees C, the standard temperature for this organism. The heat shock response of five different strains of A. nidulans was examined. This comparative study showed that these strains (haploids and diploids) show exactly the same set of heat shock proteins.