Preliminary crystallographic data for an extracellular proteolytic enzyme from a strain of Arthrobacter

The chapter discusses endopeptidases and focuses on their three main types: (1) acid proteases, (2) diisopropylphosphofluoridate (DFP)-sensitive alkaline proteases, and (3) metal chelator-sensitive neutral proteases. The acid proteases that include the Aspergillus saitoi acid protease, Rhizopus chinensis acid protease, and Paecilomyces varioti acid protease are characterized by low pH activity and stability profiles, insensitivity to metal...