Characterisation of the slime gland secretion from the peripatus, Euperipatoides kanangrensis (Onychophora: Peripatopsidae)

Kirsten Benkendorff, Kate Beardmore, Andrew A. Gooley, Nicolle H. Packer, Noel N. Tait*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

The Onychophora display a distinctive mechanism of feeding that involves the entanglement of prey in a sticky secretion. This secretion is produced in the slime glands and ejected as adhesive threads from a pair of oral papillae on either side of the head. Biochemical analyses of the secretion reveals it to be a composite material containing protein, sugar, lipid and a surfactant, nonylphenol. The identification of nonylphenol in the secretion is significant in that this is the first report of this compound from a natural source. The proteins are the principal component of the slime and the amino acid composition of the crude secretion suggests the presence of collagen or a 'collagen-like' domain. One or more of the high molecular weight proteins are O-glycosylated where the predominant modification is a single N- acetylgalactosamine (GalNAc). This study adds to our understanding of the chemical and biochemical composition of the unusual onycophoran slime gland secretion.

Original languageEnglish
Pages (from-to)457-465
Number of pages9
JournalComparative Biochemistry and Physiology - Part B: Biochemistry and Molecular Biology
Volume124
Issue number4
DOIs
Publication statusPublished - 1999

Keywords

  • Collagen-like domain
  • Glycoprotein
  • Nonylphenol
  • Onycophora
  • Slime gland secretion

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