Results 141 to 150 of about 1,026 (176)

Stichodactyla helianthus Ellis 1768

2012
Published as part of Gonzalez-Muñoz, Ricardo, Simões, Nuno, Sanchez-Rodriguez, Judith, Rodriguez, Estefania & Segura-Puertas, Lourdes, 2012, First Inventory of Sea Anemones (Cnidaria: Actiniaria) of the Mexican Caribbean, pp.
Gonzalez-Muñoz, Ricardo, Simões, Nuno, Sanchez-Rodriguez, Judith, Rodriguez, Estefania, Segura-Puertas, Lourdes   +4 more
openaire   +1 more source

Characterization of a potassium channel toxin from the Caribbean sea anemone Stichodactyla helianthus

Toxicon, 1995
A peptide toxin, ShK, that blocks voltage-dependent potassium channels was isolated from the whole body extract of the Caribbean sea anemone Stichodactyla helianthus. It competes with dendrotoxin I and alpha-dendrotoxin for binding to synaptosomal membranes of rat brain, facilities acetylcholine release at an avian neuromuscular junction and suppresses
Castañeda, O, Sotolongo, V, Amor, A M, Stöcklin, R, Anderson, A J, Harvey, A L, Engström, A, Wernstedt, C, Karlsson, E   +8 more
openaire   +3 more sources

Identity between cytolysins purified from two morphos of the Caribbean sea anemone Stichodactyla helianthus

Toxicon, 2002
Stichodactyla helianthus is a sea anemone relatively abundant along Cuban coasts appearing in two morphos with different colors in their tentacles: green or brownish, probably due to their association with algal symbionts. Traditionally, the brownish morpho has been used as a source of sticholysins I and II, the most characterized cytolysins from this ...
Diana, Martínez, Vivian, Morera, Carlos, Alvarez, Mayra, Tejuca, Fabiola, Pazos, Yairet, García, Manfred, Raida, Gabriel, Padrón, María, Eliana Lanio   +8 more
openaire   +2 more sources

Chemical synthesis of a neurotoxic polypeptide from the sea anemoneStichodactyla helianthus⁺

International Journal of Peptide and Protein Research, 1990
The sea anemoneStichodactyla helianthusneurotoxin I, a 48‐residue polypeptide, was synthesized by automated solid phase methodology. The fully reduced polypeptide was subsequently refolded in the presence of a glutathione oxidoreduction buffer to the biologically active species containing three disulfide bonds.
M W, Pennington, W R, Kem, R S, Norton, B M, Dunn   +3 more
openaire   +2 more sources

An ouabain-sensitive Na+,K+-ATPase in tentacles of the sea anemone Stichodactyla helianthus

Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology, 1995
Tentacles of Stichodactyla helianthus contain an ouabain-inhibitable, (Na+,K+)-stimulated ATPase. The K0.5 for Na+ was 24 mM and for K+, 3.2 mM. The apparent affinity for ouabain was low, I50 = 10(-4) M. The order of cation affinities was Rb+ > K+ > NH4+ = Cs+.
S C, Specht, R, Lopez-Rosado, C, Santos-Berrios, R, Figueroa-Nieves   +3 more
openaire   +2 more sources

Primary structure of two cytolysin isoforms from Stichodactyla helianthus differing in their hemolytic activity.

Toxicon, 2001
Sticholysin I (St-I) and sticholysin II (St-II) are cytolysins purified from the sea anemone Stichodactyla helianthus with a high degree of sequence identity (93%) but clearly differenced in their hemolytic activity. In order to go further into the structural determinants for the different behavior of St-I and St-II, we report here the complete amino ...
Vivian Huerta, Vivian Morera, Y. Guanche, Glay Chinea, Luis Javier González, Lázaro Betancourt, Diana Martínez Hernández, Carlos Álvarez, María E. Lanio, Vladimir Besada   +9 more
openalex   +3 more sources

Sticholysins, two pore-forming toxins produced by the Caribbean Sea anemone Stichodactyla helianthus: Their interaction with membranes

Toxicon, 2009
Sticholysins (Sts) I and II (StI/II) are pore-forming toxins (PFTs) produced by the Caribbean Sea anemone Stichodactyla helianthus belonging to the actinoporin family, a unique class of eukaryotic PFTs exclusively found in sea anemones. As for the rest of the members of this family, Sts are cysteine-less proteins, with molecular weights around 20 kDa ...
Carlos Álvarez, José M. Mancheño, Diana Martínez Hernández, Mayra Tejuca, Fabiola Pazos, María E. Lanio   +5 more
openalex   +3 more sources

ShK is a potassium channel blocker from the Caribbean sea anemone Stichodactyla helianthus

Toxicon, 1996
Olga Castañeda, Edward G. Rowan, L.C. Young, A.L. Harvey, Evert Karlsson   +4 more
openalex   +2 more sources

Mechanism of Membrane Permeabilization by Sticholysin I, a Cytolysin Isolated from the Venom of the Sea Anemone Stichodactyla helianthus

Biochemistry, 1996
Actinaria cytolysins are very potent basic toxins isolated from the venom of sea anemones, which are supposed to exert their toxic activity through formation of oligomeric pores in the host plasma membrane. To gain insight into their mechanism of action, the interaction of Stichodactyla helianthus sticholysin I (St-I) with lipid bilayers was studied ...
Mayra Tejuca, Mauro Dalla Serra, Mercedes Ferreras, María E. Lanio, Gianfranco Menestrina   +4 more
openalex   +6 more sources

Two variants of the major serine protease inhibitor from the sea anemone Stichodactyla helianthus, expressed in Pichia pastoris

Protein Expression and Purification, 2016
The major protease inhibitor from the sea anemone Stichodactyla helianthus (ShPI-1) is a non-specific inhibitor that binds trypsin and other trypsin-like enzymes, as well as chymotrypsin, and human neutrophil elastase. We performed site-directed mutagenesis of ShPI-1 to produce two variants (rShPI-1/K13L and rShPI/Y15S) that were expressed in Pichia ...
Rossana García‐Fernández, Patrick Ziegelmüller, Lidice González, Manuel Mansur, Yoan Machado, Lars Redecke, Ulrich Hahn, Christian Betzel, María de los Ángeles Chávez   +8 more
openalex   +3 more sources