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N-glycome and N-glycoproteome of a Hematophagous Parasitic Nematode

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Specialty Biotechnology
Date 2021 May 24
PMID 34025939
Citations 10
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Abstract

N-glycosylation is a physiologically vital post-translational modification of proteins in eukaryotic organisms. Initial work on - a blood-sucking nematode of ruminants with a broad geographical distribution - has shown that this parasite harbors N-glycans with exclusive chitobiose modifications. Besides, several immunogenic proteins (, amino- and metallo-peptidases) are known to be N-glycosylated in adult worms. However, an informative atlas of N-glycosylation in is not yet available. Herein, we report 291 N-glycosylated proteins with a total of 425 modification sites in the parasite. Among them, many peptidase families (, peptidase C1 and M1) including potential vaccine targets were enriched. Notably, the glycan-rich conjugates are distributed primarily in the intestine and gonads of adult worms, and consequently hidden from the host's immune system. Collectively, these data provide a comprehensive atlas of N-glycosylation in a prevalent parasitic nematode while underlining its significance for infection, immunity and prevention.

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