Cuticle degrading proteases from insect moulting fluid and culture filtrates of entomopathogenic fungi

Insects degrade their own cuticle during moulting, a process which is catalysed by a complex mixture of enzymes. Entomopathogenic fungi infect the insect host by penetration of the cuticle, utilizing enzymatic and/or physical mechanisms. Protein is a major component of insect cuticle and a major rec...

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Bibliographic Details
Published in:Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology 1995-04, Vol.110 (4), p.661-669
Main Authors: Samuels, R.I., Paterson, I.C.
Format: Article
Language:English
Subjects:
Aminopeptidase
Animals
Body Fluids - metabolism
Chitin - metabolism
Culture Media
Cuticle
Endopeptidases - metabolism
Filtration
Fungi - enzymology
Fungus
Insect
Insecta
Manduca - enzymology
Manduca sexta
Metamorphosis, Biological
Metarhizium anisopliae
Protease
Proteinase
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Summary:Insects degrade their own cuticle during moulting, a process which is catalysed by a complex mixture of enzymes. Entomopathogenic fungi infect the insect host by penetration of the cuticle, utilizing enzymatic and/or physical mechanisms. Protein is a major component of insect cuticle and a major recyclable resource for the insect and, therefore, represents a significant barrier to the invading fungus. To this end, both insects and entomopathogenic fungi produce a variety of cuticle degrading proteases. The aim of this paper is to review these proteases and to highlight their similarities, with particular reference to the tobacco hornworm, Manduca sexta, and the entomopathogenic fungus, Metarhizium anisopliae
ISSN:1096-4959
0305-0491
1879-1107
DOI:10.1016/0305-0491(94)00205-9