Results 31 to 40 of about 17,770 (172)

Secretion of sulfated fucans by diatoms may contribute to marine aggregate formation [PDF]

Limnology and Oceanography, 2021
Abstract Microalgae produce copious amounts of structurally diverse polysaccharides, some are bound within cells and cell walls, while others are secreted into the surrounding seawater. A fraction of the secreted polysaccharides assembles into particles promoting aggregation and in turn formation of aggregates increases the export of ...
Guoyin Huang, Silvia Vidal‐Melgosa, Andreas Sichert, Stefan Becker, Yang Fang, Jutta Niggemann, Morten Hvitfeldt Iversen, Yi Cao, Jan‐Hendrik Hehemann   +8 more
openaire   +1 more source

Impact of sulfation pattern on the conformation and dynamics of sulfated fucan oligosaccharides as revealed by NMR and MD [PDF]

Glycobiology, 2014
Sulfated fucans from sea urchin egg jelly express well-defined chemical structures that vary with species. This species specificity regulates the sperm acrosome reaction, a critical step to assure intra-specific fertilization. In addition, these polysaccharides are involved in other biological activities such as anticoagulation.
Ismael N L, Queiroz, Xiaocong, Wang, John N, Glushka, Gustavo R C, Santos, Ana P, Valente, James H, Prestegard, Robert J, Woods, Paulo A S, Mourão, Vitor H, Pomin   +8 more
openaire   +2 more sources

Isolation and culture of a marine bacterium degrading the sulfated fucans from marine brown algae. [PDF]

Mar Biotechnol (NY), 2006
Fucoidans are matrix polysaccharides from marine brown algae, consisting of an alpha-L-fucose backbone substituted by sulfate-ester groups and masked with ramifications containing other monosaccharide residues. In spite of their interest as biologically active compounds in a number of homologous and heterologous systems, no convenient sources with ...
Descamps V, Colin S, Lahaye M, Lahaye M, Jam M, Richard C, Potin P, Barbeyron T, Yvin JC, Kloareg B.   +9 more
europepmc   +6 more sources

Fucans from a Tunisian brown seaweed Cystoseira barbata: structural characteristics and antioxidant activity [PDF]

, 2014
Sulfated polysaccharides from brown seaweeds are known to be a topic of numerous studies, due to their beneficial biological properties including antioxidant activity.
Hajji, Mohamed, Kadri, Nabil, Barragan-Montero, Veronique, Sellimi, sabrine, Nasri, Moncef, Laouer, Hocine   +5 more
core   +2 more sources

Heterofucans from the Brown Seaweed Canistrocarpus cervicornis with Anticoagulant and Antioxidant Activities

Marine Drugs, 2011
Fucan is a term used to denominate a family of sulfated polysaccharides rich in sulfated L-fucose. We extracted six fucans from Canistrocarpus cervicornis by proteolytic digestion followed by sequential acetone precipitation.
Hugo Alexandre Oliveira Rocha, Sara Lima Cordeiro, Mariana Santana Santos Pereira Costa, Luciana Guimaraes Alves, Nednaldo Dantas-Santos, Gabriel Pereira Fidelis, Leonardo Thiago Duarte Barreto Nobre, Rafael Barros Gomes Camara, Leandro Silva Costa   +8 more
doaj   +1 more source

Dissection of cell wall assembly dynamics during early embryogenesis in the brown alga Fucus [PDF]

, 2016
Zygotes from Fucus species have been used extensively to study cell polarization and rhizoid outgrowth, and in this model system cell wall deposition aligns with the establishment of polarity.
Le Moigne, M-A, Siméon, A, Knox, J. Paul, Jam, M, Marcus, SE, Marcus, Susan E., Le Moigne, M, Torode, T, Siméon, Amandine, Le Moigne, Marie-Anne, Duffieux, Delphine, Torode, Thomas, A, Knox, JP, Jam, Murielle, Duffieux, D, Hervé, C, Torode, TA, Hervé, Cécile   +17 more
core   +1 more source

Structural Analysis of Fucoidans

Natural Product Communications, 2008
Sulfated polysaccharides of brown algae (“fucoidans”) constitute a wide variety of biopolymers from simple sulfated fucans up to complex heteropolysaccharides composed of several neutral monosaccharides, uronic acid and sulfate. The increased interest in
Maria I. Bilan, Anatolii I. Usov
doaj   +1 more source

Specific sulfation and glycosylation - a structural combination for the anticoagulation of marine carbohydrates

Frontiers in Cellular and Infection Microbiology, 2014
Based on considered achievements of the last 25 years, specific combinations of sulfation patterns and glycosylation types have been proved to be key structural players for the anticoagulant activity of certain marine glycans.
Vitor Hugo Pomin, Paulo Antonio De Souza Mourão   +1 more
doaj   +1 more source

Inhibitory effects of fucan sulfates on enzymatic hydrolysis of starch

LWT - Food Science and Technology, 2011
Abstract The effect of fucoidan and its oversulfated derivative on starch digestibility was investigated by determining the enzymatic reaction kinetics and their inhibitory activity against α-amylase and amyloglucosidase. After the α-amylase hydrolysis, the produced reducing sugars of the buckwheat starch (BW, 2.0–3.0 g/100 mL) and those of the ...
MyoungLae Cho, Jung H. Han, SangGuan You
openaire   +1 more source

Antithrombotics from the Sea: Polysaccharides and Beyond

Marine Drugs, 2019
Marine organisms exhibit some advantages as a renewable source of potential drugs, far beyond chemotherapics. Particularly, the number of marine natural products with antithrombotic activity has increased in the last few years, and reports show a wide ...
Francisca Carvalhal, Ricardo R. Cristelo, Diana I. S. P. Resende, Madalena M. M. Pinto, Emília Sousa, Marta Correia-da-Silva   +5 more
doaj   +1 more source