The invention relates to newly identified gene sequences that encode novel proteases obtainable from Aspergillus niger. The invention features the full length gene sequence of the novel genes, their cDNA sequences as well as the full-length functional protein and fragments thereof. The invention also relates to methods of using these enzymes in industrial processes and methods of diagnosing fungal infections. Also included in the invention are cells transformed with DNA according to the invention and cells wherein a protease according to the invention is genetically modified to enhance or reduce its activity and/or level of expression.