Binding of plasma fibronectin to candida albicans occurs through the cell binding domain

Christopher Penn, Stephen A. Klotz

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

Candida albicans yeast cells bind soluble human plasma fibronectin (Fn) through a glycoprotein receptor (adhesin) located on the cell surface. This work demonstrates that a 120 kDa proteolytic fragment of Fn encompassing the cell binding domain binds more avidly to the yeast cell adhesin than does the parent Fn molecule. The presence of binding of Fn fragments containing heparin- and gelatin-binding domains of Fn could not be detected. The binding of the 120 kDa fragment is inhibited by a monoclonal antibody to the cell binding domain containing the amino acid sequence, Arginine-Glycine-Aspartic acid (RGD) as well as by an RGD-containing ∼23-mer Fn peptide, but not with heparin or GRGDSPL. The fact that the cell binding domain of soluble Fn binds more avidly than does the parent molecule may explain the difference in the interaction of soluble Fn and immobilized Fn with Candida. It is possible that, upon immobilization, Fn may expose domains of the molecule previously unexposed when the molecule is in the soluble state.

Original languageEnglish (US)
Pages (from-to)387-393
Number of pages7
JournalMicrobial Pathogenesis
Volume17
Issue number6
DOIs
StatePublished - Dec 1994
Externally publishedYes

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Keywords

  • Adhesin
  • Candida
  • Cell binding domain
  • Extracellular matrix
  • Fibronectin
  • RGD

ASJC Scopus subject areas

  • Microbiology
  • Infectious Diseases

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