“…Administration of catalytic antibodies which possess VIPase activity to animal models cause hyperreactivity of an airway smooth muscle [17]. Other catalytic autoantibodies possesing protease activity were found in pathophysiology of certain autoimmune disorders, like Hashimoto's thyroiditis [18][19][20], multiple sclerosis (MS) [21][22][23], hemophilia A [24][25][26] and multiple myeloma [27]. The Bence-Jones proteins with peptidase activities, were found in urine of patients with multiple myeloma, *Address correspondence to this author at the Department of Technology and Biotechnology of Drugs, Medical College, Jagiellonian University, 9, 30-688 Kraków, Poland; E-mail: mfkonono@cyf-kr.edu.pl they are composed of light chains of human autoantibodies [28,29].…”