Light and the recovery from heat shock induce the synthesis of 38 kDa mitochondrial proteins in Neurospora crassa

The effect of light on the protein synthesis pattern in the mitochondria of Neurospora crassa was examined by in vivo labelling with [³⁵S]-methionine and two-dimensional gel electrophoresis. A brief 5-min illumination induced the rapid and transient synthesis of a 38-kDa protein. White collar-mutants were not stimulated to synthesize this protein by light. A protein of a similar molecular weight and isoelectrical point was synthesized during recovery from heat shock.