Formation of disulfide bonds in insect prophenoloxidase enhances immunity through improving enzyme activity and stability.

Abstract

Type 3 copper proteins, including insect prophenoloxidase (PPO), contain two copper atoms in the active site pocket and can oxidize phenols. Insect PPO plays an important role in immunity. Insects and other invertebrates show limited recovery from pathogen invasion and wounds if phenoloxidase (PO) activity is low. In most insect PPOs, two disulfide bonds… (More)
DOI: 10.1016/j.dci.2014.01.011

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