Margareta J. Hellmann

Muenster, NW 48143, Germany

Last Updated: 09/26/2026

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Found 14 publications

Acetylation and accessibility of Cryptococcus neoformans cell wall chitosans influence the strength of host immune responses.

Acetylation and accessibility of Cryptococcus neoformans cell wall chitosans influence the strength of host immune responses.

Journal: Cell surface (Amsterdam, Netherlands)

Published: January 15, 2026

Chitin deacetylase 3 of Cryptococcus neoformans produces chitosans with low degree and random pattern of acetylation.

Chitin deacetylase 3 of Cryptococcus neoformans produces chitosans with low degree and random pattern of acetylation.

Journal: International journal of biological macromolecules

Published: November 27, 2025

Domain gain or loss in a fungal chitinase enables specialization towards antagonism or immune suppression.

Domain gain or loss in a fungal chitinase enables specialization towards antagonism or immune suppression.

Journal: Nature communications

Published: July 01, 2025

Chitosan production methods influence receptor-mediated immune responses but not target-mediated antimicrobial bioactivities.

Chitosan production methods influence receptor-mediated immune responses but not target-mediated antimicrobial bioactivities.

Journal: Carbohydrate polymers

Published: June 18, 2025

Degree of acetylation of chitosans determined by size exclusion chromatography coupled to UV and refractive index detection.

Degree of acetylation of chitosans determined by size exclusion chromatography coupled to UV and refractive index detection.

Journal: Carbohydrate polymers

Published: June 04, 2025

Transkingdom mechanism of MAMP generation by chitotriosidase feeds oligomeric chitin from fungal pathogens and allergens into TLR2-mediated innate immune sensing.

Transkingdom mechanism of MAMP generation by chitotriosidase feeds oligomeric chitin from fungal pathogens and allergens into TLR2-mediated innate immune sensing.

Journal: Frontiers in immunology

Published: September 16, 2024

Hydrolysis of chitin and chitosans by the human chitinolytic enzymes: chitotriosidase, acidic mammalian chitinase, and lysozyme.

Hydrolysis of chitin and chitosans by the human chitinolytic enzymes: chitotriosidase, acidic mammalian chitinase, and lysozyme.

Journal: International journal of biological macromolecules

Published: August 30, 2024

Three intertwining effects guide the mode of action of chitin deacetylase de- and N-acetylation reactions.

Three intertwining effects guide the mode of action of chitin deacetylase de- and N-acetylation reactions.

Journal: Carbohydrate polymers

Published: July 16, 2024

Chitins and chitosans-A tale of discovery and disguise, of attachment and attainment.

Chitins and chitosans-A tale of discovery and disguise, of attachment and attainment.

Journal: Current opinion in plant biology

Published: July 08, 2024

Transcriptomics reveal a mechanism of niche defense: two beneficial root endophytes deploy an antimicrobial GH18-CBM5 chitinase to protect their hosts.

Transcriptomics reveal a mechanism of niche defense: two beneficial root endophytes deploy an antimicrobial GH18-CBM5 chitinase to protect their hosts.

Journal: The New phytologist

Published: April 19, 2024

Heterogeneously deacetylated chitosans possess an unexpected regular pattern favoring acetylation at every third position.

Heterogeneously deacetylated chitosans possess an unexpected regular pattern favoring acetylation at every third position.

Journal: Nature communications

Published: January 23, 2024

Fast insights into chitosan-cleaving enzymes by simultaneous analysis of polymers and oligomers through size exclusion chromatography.

Fast insights into chitosan-cleaving enzymes by simultaneous analysis of polymers and oligomers through size exclusion chromatography.

Journal: Scientific reports

Published: June 14, 2023

Showing 1-12 of 14

Last Updated: 09/26/2026