Bart Claushuis

This study identifies the unknown moiety in the b-type flagellin glycan of Pseudomonas aeruginosa PAO1 as N,N-dimethylthreonine using mass spectrometry and compares it to Type A glycan in C. difficile.

This study shows that HtrA proteolytic activity affects its expression level and is necessary for C. difficile survival under acidic conditions.

The paper characterizes the non-prime- and prime-side specificity of Pro-Pro endopeptidases using synthetic peptide libraries and mass spectrometry, identifying novel PPEPs and altered specificity in mutants.