alexa A peroxidase dual oxidase system modulates midgut epithelial immunity in Anopheles gambiae.
Biochemistry

Biochemistry

Biochemistry & Physiology: Open Access

Author(s): Kumar S, MolinaCruz A, Gupta L, Rodrigues J, BarillasMury C

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Abstract Extracellular matrices in diverse biological systems are cross-linked by dityrosine covalent bonds catalyzed by the peroxidase/oxidase system. We show that a peroxidase, secreted by the Anopheles gambiae midgut, and dual oxidase form a dityrosine network that decreases gut permeability to immune elicitors. This network protects the microbiota by preventing activation of epithelial immunity. It also provides a suitable environment for malaria parasites to develop within the midgut lumen without inducing nitric oxide synthase expression. Disruption of this barrier results in strong and effective pathogen-specific immune responses.
This article was published in Science and referenced in Biochemistry & Physiology: Open Access

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