Initial Characterization of the Hemolysin Stachylysin from Stachybotrys chartarum
AUTOR(ES)
Vesper, Stephen J.
FONTE
American Society for Microbiology
RESUMO
Stachybotrys chartarum is a toxigenic fungus that has been associated with human health concerns, including pulmonary hemorrhage and hemosiderosis. This fungus produces a hemolysin, stachylysin, which in its apparent monomeric form has a molecular mass of 11,920 Da as determined by matrix-assisted laser desorption ionization–time of flight mass spectrometry. However, it appears to form polydispersed aggregates, which confounds understanding of the actual hemolytically active form. Exhaustive dialysis or heat treatment at 60°C for 30 min inactivated stachylysin. Stachylysin is composed of about 40% nonpolar amino acids and contains two cysteine residues. Purified stachylysin required more than 6 h to begin lysing sheep erythrocytes, but by 48 h, lysis was complete. Stachylysin also formed pores in sheep erythrocyte membranes.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=97969Documentos Relacionados
- Stachylysin May Be a Cause of Hemorrhaging in Humans Exposed to Stachybotrys chartarum
- Quantification of Siderophore and Hemolysin from Stachybotrys chartarum Strains, Including a Strain Isolated from the Lung of a Child with Pulmonary Hemorrhage and Hemosiderosis
- Isolation and Properties of Stachyrase A, a Chymotrypsin-Like Serine Proteinase from Stachybotrys chartarum
- Indoor Mold, Toxigenic Fungi, and Stachybotrys chartarum: Infectious Disease Perspective
- Hemolysis, Toxicity, and Randomly Amplified Polymorphic DNA Analysis of Stachybotrys chartarum Strains