Results 71 to 80 of about 772 (167)

Structure, anti-SARS-CoV-2, and anticoagulant effects of two sulfated galactans from the red alga Botryocladia occidentalis. [PDF]

Int J Biol Macromol, 2023
Maurya AK, Sharma P, Samanta P, Shami AA, Misra SK, Zhang F, Thara R, Kumar D, Shi D, Linhardt RJ, Sharp JS, Doerksen RJ, Tandon R, Pomin VH.   +13 more
europepmc   +1 more source

Evolutionary Evidence of Algal Polysaccharide Degradation Acquisition by Pseudoalteromonas carrageenovora 9T to Adapt to Macroalgal Niches

Frontiers in Microbiology, 2018
About half of seaweed biomass is composed of polysaccharides. Most of these complex polymers have a marked polyanionic character. For instance, the red algal cell wall is mainly composed of sulfated galactans, agars and carrageenans, while brown algae ...
Angélique Gobet, Tristan Barbeyron, Maria Matard-Mann, Maria Matard-Mann, Ghislaine Magdelenat, David Vallenet, Eric Duchaud, Gurvan Michel   +7 more
doaj   +1 more source

Fermentation optimization and enzyme characterization of a new ι-Carrageenase from Pseudoalteromonas carrageenovora ASY5

Electronic Journal of Biotechnology, 2018
Background: A new ι-carrageenase-producing strain was screened from mangroves and authenticated as Pseudoalteromonas carrageenovora ASY5 in our laboratory. The potential application of this new strain was evaluated.
Qiong Xiao, Yanbing Zhu, Jiajia Li, Changzheng Wu, Hui Ni, Anfeng Xiao   +5 more
doaj   +1 more source

Edematogenic activity of a sulfated galactan from the red marine algaeGelidium crinale

Pharmaceutical Biology, 2012
The red algae Gelidium crinale (Turner) Gaillon (Gelidiaceae), encountered along the Southeast and Northeast Brazilian sea coast, contains a sulfated galactan presenting a similar saccharide backbone compared to λ carrageenan. Inflammatory effects of other galactans were reported, but not for that obtained from G.
Ana Maria Sampaio, Assreuy, Renata Morais Ferreira, Amorim, Luiz André Cavalcante, Brizeno, Lívia, de Paulo Pereira, Albertina Antonielly Sydney, de Sousa, Gislei Frota, Aragão, Maria Gonçalves, Pereira   +6 more
openaire   +2 more sources

Purification, cloning, characterization and essential amino acid residues analysis of a new ι-carrageenase from Cellulophaga sp. QY3.

PLoS ONE, 2013
ι-Carrageenases belong to family 82 of glycoside hydrolases that degrade sulfated galactans in the red algae known as ι-carrageenans. The catalytic mechanism and some substrate-binding residues of family GH82 have been studied but the substrate ...
Su Ma, Gaofei Duan, Wengang Chai, Cunliang Geng, Yulong Tan, Lushan Wang, Frédéric Le Sourd, Gurvan Michel, Wengong Yu, Feng Han   +9 more
doaj   +1 more source

Bimetallic nanoparticles with sulfated galactan eliminate Vibrio parahaemolyticus in shrimp Penaeus vannamei

Fish & Shellfish Immunology
Bimetallic (Au/Ag) nanoparticles (BNPs) have shown enhanced antibacterial activity compared to their monometallic counterparts. Sulfated galactans (SG) are a naturally occurring polymer commonly found in red seaweed Gracilaria fisheri. They are biocompatible and biodegradable and environmentally friendly.
Manoj Tukaram Kamble, Chumporn Soowannayan, Sunisa Chaicherd, Seema Vijay Medhe, Tawut Rudtanatip, Dakrong Pissuwan, Kanokpan Wongprasert   +6 more
openaire   +2 more sources

Antithrombin-mediated anticoagulant activity of sulfated polysaccharides: different mechanisms for heparin and sulfated galactans.

The Journal of biological chemistry, 2004
We investigated the mechanisms of anticoagulant activity mediated by sulfated galactans. The anticoagulant activity of sulfated polysaccharides is achieved mainly through potentiation of plasma cofactors, which are the natural inhibitors of coagulation proteases. Our results indicated the following.
Fábio R, Melo, Mariana S, Pereira, Débora, Foguel, Paulo A S, Mourão   +3 more
openaire   +1 more source

Iota-carrageenans from Solieria filiformis (Rhodophyta) and their effects in the inflammation and coagulation=Iota-carragenanas da rodofícea Solieria filiformis e seus efeitos na inflamação e coagulação [PDF]

Acta Scientiarum: Technology, 2012
Biochemical analyses are important tools for discovering new bioactive compounds for medical clinic. This study aimed at isolating iota-carrageenans (ι-CARs) from Solieria filiformis (Rhodophyta) by enzymatic extraction (EE), refined hot-water extraction
Norma Maria Barros Benevides, Ticiana de Brito Lima, Gabriela Almeida de Paula, Edfranck de Sousa Oliveira Vanderlei, José Ariévilo Gurgel Rodrigues, Ianna Wivianne Fernandes de Araújo   +5 more
doaj  

Red Seaweed (Rhodophyta) Phycocolloids: A Road from the Species to the Industry Application

Marine Drugs
Seaweed polysaccharides are versatile both in their functions in seaweed physiology and in their practical applications in society. However, their content and quality vary greatly.
Madalena Mendes, João Cotas, Diana Pacheco, Kay Ihle, Alina Hillinger, Miguel Cascais, João Carlos Marques, Leonel Pereira, Ana M. M. Gonçalves   +8 more
doaj   +1 more source

A carbohydrate-based mechanism of species recognition in sea urchin fertilization

Brazilian Journal of Medical and Biological Research, 2007
In the present review, we describe a systematic study of the sulfated polysaccharides from marine invertebrates, which led to the discovery of a carbohydrate-based mechanism of sperm-egg recognition during sea urchin fertilization.
P.A.S. Mourão
doaj