Tags: Enzyme.
IgA protease (EC 3.4.21.72 IgA-specific serine endopeptidase IgA proteinase IgA-specific proteinase immunoglobulin A protease immunoglobulin A proteinase) is an enzyme. This enzyme catalyses the following chemical reaction Cleavage of immunoglobulin A molecules at certain Pro- bonds in the hinge region. No small molecule substrates are knownThis enzyme is secreted by Gram-negative bacteria Neisseria gonorrhoeae Haemophilus influenzae and Gram-positive Streptococcus pneumoniae.