The origin and functions of the insect peritrophic membrane and peritrophic gel.

  title={The origin and functions of the insect peritrophic membrane and peritrophic gel.},
  author={Walter R. Terra},
  journal={Archives of insect biochemistry and physiology},
  volume={47 2},
  • Walter R. Terra
  • Published 2001 in Archives of insect biochemistry and physiology
There is a a fluid (peritrophic gel) or membranous (peritrophic membrane, PM) film surrounding the food bolus in most insects. The PM is composed of chitin and proteins, of which peritrophins are the most important. It is proposed here that, during evolution, midgut cells initially synthesized chitin and peritrophins derived from mucins by acquiring chitin-binding domains, thus permitting the formation of PM. Since PM compartmentalizes the midgut, new physiological roles were added to those of… CONTINUE READING
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