Identification of the Pseudomonas aeruginosa 1244 pilin glycosylation site

Jason Comer, Mark A. Marshall, Vincent J. Blanch, Carolyn D. Deal, Peter Castric

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

Previous work (P. Castric, F. J. Cassels, and R. W. Carlson, J. Biol. Chem. 276:26479-20485, 2001) has shown the Pseudomonas aeruginosa 1244 pilin glycan to be covalently bound to a serine residue. N-terminal sequencing of pilin fragments produced from endopeptidase treatment and identified by reaction with a glycan-specific monoclonal antibody indicated that the glycan was present between residue 75 and the pilin carboxy terminus. Further sequencing of these peptides revealed that serine residues 75, 81, 84, 105, 106, and 108 were not modified. Conversion of serine 148, but not serine 118, to alanine by site-directed mutagenesis, resulted in loss of the ability to carry out pilin glycosylation when tested in an in vivo system. These results showed the pilin glycan to be attached to residue 148, the carboxy-terminal amino acid. The carboxy-proximal portion of the pilin disulfide loop, which is adjacent to the pilin glycan, was found to be a major linear B-cell epitope, as determined by peptide epitope mapping analysis. Immunization of mice with pure pili produced antibodies that recognized the pilin glycan. These sera also reacted with P. aeruginosa 1244 lipopolysaccharide as measured by Western blotting and enzyme-linked immunosorbent assay.

Original languageEnglish (US)
Pages (from-to)2837-2845
Number of pages9
JournalInfection and immunity
Volume70
Issue number6
DOIs
StatePublished - Jun 6 2002
Externally publishedYes

Fingerprint

Fimbriae Proteins
Glycosylation
Pseudomonas aeruginosa
Polysaccharides
Serine
B-Lymphocyte Epitopes
Epitope Mapping
Endopeptidases
Peptide Mapping
Site-Directed Mutagenesis
Disulfides
Alanine
Lipopolysaccharides
Immunization
Western Blotting
Enzyme-Linked Immunosorbent Assay
Monoclonal Antibodies
Amino Acids
Peptides
Antibodies

ASJC Scopus subject areas

  • Parasitology
  • Microbiology
  • Immunology
  • Infectious Diseases

Cite this

Comer, J., Marshall, M. A., Blanch, V. J., Deal, C. D., & Castric, P. (2002). Identification of the Pseudomonas aeruginosa 1244 pilin glycosylation site. Infection and immunity, 70(6), 2837-2845. https://doi.org/10.1128/IAI.70.6.2837-2845.2002

Identification of the Pseudomonas aeruginosa 1244 pilin glycosylation site. / Comer, Jason; Marshall, Mark A.; Blanch, Vincent J.; Deal, Carolyn D.; Castric, Peter.

In: Infection and immunity, Vol. 70, No. 6, 06.06.2002, p. 2837-2845.

Research output: Contribution to journalArticle

Comer, J, Marshall, MA, Blanch, VJ, Deal, CD & Castric, P 2002, 'Identification of the Pseudomonas aeruginosa 1244 pilin glycosylation site', Infection and immunity, vol. 70, no. 6, pp. 2837-2845. https://doi.org/10.1128/IAI.70.6.2837-2845.2002
Comer, Jason ; Marshall, Mark A. ; Blanch, Vincent J. ; Deal, Carolyn D. ; Castric, Peter. / Identification of the Pseudomonas aeruginosa 1244 pilin glycosylation site. In: Infection and immunity. 2002 ; Vol. 70, No. 6. pp. 2837-2845.
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