Abstract
Exoenzyme S from Pseudomonas aeruginosa has been studied as an adhesion for glycosphingolipids and buccal cells. Binding of exoenzyme S to gangliotriosylceramide (GalNAc beta 1-4Gal beta 1-4Glc beta 1-1Cer), gangliotetraosylceramide (Gal beta 1-3 GalNAcT beta 1-4 Gal beta 1-4Glc beta 1-1Cer), and lactosylceramide (Gal beta 1-4Glc beta 1-1Cer) separated on thin-layer chromatograms was observed. Binding curves for exoenzyme S with dilutions of gangliotetraosylceramide immobilized on plastic plates were similar to previously reported results for the intact bacteria. Binding of exoenzyme S to sialylated counterparts of these glycosphingolipids was not seen, indicating that the addition of a sialic acid residue interferes with binding. Exoenzyme S and monoclonal antibody to exoenzyme S inhibit the binding of P. aeruginosa to buccal cells. The presence of exoenzyme S on the surface of P. aeruginosa was detected by immunogold labeling of bacteria with antibodies to exoenzyme S. Results of these studies led us to conclude that exoenzyme S is an important adhesion of P. aeruginosa.
MeSH Terms
ADP Ribose Transferases
Adhesins, Bacterial
Animals
Antigens, CD
Bacterial Adhesion/immunology
Bacterial Proteins/metabolism
Bacterial Toxins
Carbohydrate Sequence
Fimbriae, Bacterial/metabolism
Gangliosides
Glycosphingolipids/metabolism
Immunohistochemistry
Lactosylceramides
Lectins
Molecular Sequence Data
Poly(ADP-ribose) Polymerases/immunology,metabolism
Pseudomonas aeruginosa/enzymology,immunology,ultrastructure
Rabbits
Chemicals
Adhesins, Bacterial
Antigens, CD
Bacterial Proteins
Bacterial Toxins
G(A1) ganglioside
Gangliosides
Glycosphingolipids
Lactosylceramides
Lectins
adhesin, Pseudomonas
ganglio-N-triaosylceramide
CDw17 antigen
ADP Ribose Transferases
Poly(ADP-ribose) Polymerases
exoenzyme S
Authors & Affiliations
6 authors, click to expand affiliations / ORCID
Baker N R
Department of Microbiology, Ohio State University, Columbus 43210.
Minor V
Deal C
Shahrabadi M S
Simpson D A
Woods D E
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