Laboratoire de biologie intégrative des modèles marins | LBI2M

• Article dans une revue

Exploration of the extracellular matrix of the red alga Chondrus crispus reveals unprecedented insights into carrageenan structures

David Ropartz, Adrien Lissarrague, Murielle Jam, Diane Jouanneau, Sophie Le Gall, Bastien Annic, Mathieu Fanuel, Stacy Krueger-Hadfield, Myriam Valéro, Mirjam Czjzek, Hélène Rogniaux, Cécile Hervé

Carrageenans are major gel forming polysaccharides in the extracellular matrix of the red macroalga Chondrus crispus. These galactans are made of linear chains of repetitive disaccharide motifs based on d-galactose residues alternately linked by β-1,4 and α-1,3 glycosidic bonds. A definite number…

Carbohydrate Polymers, 2025, 348, pp.122737. ⟨10.1016/j.carbpol.2024.122737⟩. ⟨hal-04734206⟩

• Article dans une revue

Longitudinal growth of the Saccharina kelp embryo depends on actin filaments that control the formation of a corset-like structure composed of alginate

Samuel Boscq, Ioannis Theodorou, Roman Milstein, Aude Le Bail, Sabine Chenivesse, Bernard Billoud, Bénédicte Charrier

Scientific Reports, 2025, 15 (1), pp.1178. ⟨10.1038/s41598-024-83814-5⟩. ⟨hal-04886676⟩

• Article dans une revue

Identification and Characterization of a New Thermophilic κ‑Carrageenan Sulfatase

Nanna Rhein-Knudsen, Diego S Reyes-Weiss, Leesa J Klau, Alexandra Jeudy, Thomas Roret, Runar Stokke, Vincent G H Eijsink, Finn L Aachmann, Mirjam Czjzek, Svein Jarle Horn

Carrageenans are sulfated polysaccharides found in the cell wall of certain red seaweeds. They are widely used in the food industry for their gelling and stabilizing properties. In nature, carrageenans undergo enzymatic modification and degradation by marine organisms. Characterizing these enzymes…

Journal of Agricultural and Food Chemistry, 2025, 73, pp.2044 - 2055. ⟨10.1021/acs.jafc.4c09751⟩. ⟨hal-04923334⟩

• Pré-publication, Document de travail

Estimating consensus proteomes and metabolic functions from taxonomic affiliations

Arnaud Belcour, Pauline Hamon-Giraud, Alice Mataigne, Baptiste Ruiz, Yann Le Cunff, Jeanne Got, Lorraine Awhangbo, Megane Lebreton, Clémence Frioux, Simon Dittami, P. Dabert, Anne Siegel, Samuel Blanquart

Purpose: Metabarcoding, and metagenomic sequencing have enabled the characterization of highly diverse environmental communities. The challenge of estimating the metabolic functions carried out by these communities has led to the development of several state-of-the-art methods, most of which are…

2025. ⟨hal-03697249v2⟩