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Conformational stability and hemolytic activity of actinoporin RTX-SII from the sea anemone Radianthus macrodactylus.

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The spatial organization of actinoporin RTX-SII from the sea anemone Radianthus macrodactylus on the level of tertiary and secondary structures was studied by UV and CD spectroscopy and intrinsic protein fluorescence. The specific and molar extinction coefficients of RTX-SII were determined. The

The specificity of Av3 sea anemone toxin for arthropods is determined at linker DI/SS2-S6 in the pore module of target sodium channels.

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Av3 is a peptide neurotoxin from the sea anemone Anemonia viridis that shows specificity for arthropod voltage-gated sodium channels (Navs). Interestingly, Av3 competes with a scorpion α-toxin on binding to insect Navs and similarly inhibits the inactivation process, and thus has been classified as

Chemical modification of equinatoxin II, a lethal and cytolytic toxin from the sea anemone Actinia equina L.

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The role of arginine and tyrosine in cytolytic properties of equinatoxin II, isolated from the sea anemone Actinia equina L., was studied by means of chemical modifications. The toxin was modified with 2,3 butanedione and tetranitromethane, respectively. The extent of modification and

Calmodulins from muscles of marine invertebrates, scallop and sea anemone.

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Invertebrate calmodulins of the sea anemone and scallop muscle were isolated and their properties were compared with those of vertebrate calmodulins from rabbit muscle and pig brain. The molecular weights estimated by SDS-polyacrylamide gel electrophoresis were similar to the molecular weight

[Conformational stability of serine proteinase inhibitor from the sea anemone Heteractis crispa].

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The influence of different environmental values of the pH and temperature on the spatial organization of serine proteinase inhibitor from the sea anemone Heteractis crispa (=Radianthus macrodactylus) on the level of tertiary and secondary structure was studied by CD spectroscopy. The molecule InhVJ

Enzymatic 5-hydroxylation of L-dopa by a tyrosinase isolated from the sea anemone Metridium senile.

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A particulate tyrosinase has been extracted and purified from tentacles of the sea anemone Metridium senile. The purified enzyme had properties in common with both mushroom and vertebrate tyrosinase and catalyzed three different reactions: oxidation of catechols, hydroxylation of L-tyrosine with

A variable residue in the pore of Kv1 channels is critical for the high affinity of blockers from sea anemones and scorpions.

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Animal toxins are associated with well defined selectivity profiles; however the molecular basis for this property is not understood. To address this issue we refined our previous three-dimensional models of the complex between the sea anemone toxin BgK and the S5-S6 region of Kv1.1 (Gilquin, B.,

Chemical and functional identification and characterization of novel sulfated alpha-conotoxins from the cone snail Conus anemone.

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An LC/MS analysis with diagnostic screening for the detection of peptides with posttranslational modifications revealed the presence of novel sulfated peptides within the alpha-conotoxin molecular mass range in Conus anemone crude venom. A functional assay of the extract showed activity at several

[Amino acid sequence of neurotoxins IV and V from the sea anemone Radianthus macrodactylus].

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Amino acid sequences of neurotoxins RTX-IV and RTX-V isolated from the sea anemone Radianthus macrodactylus were determined by the automated Edman degradation; their polypeptide chains consist of 48 and 47 amino acid residues, respectively. For identification of tryptophan-30 in toxin RTX-IV, its

An epidermal growth factor-like toxin and two sodium channel toxins from the sea anemone Stichodactyla gigantea.

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Three peptide toxins (gigantoxins I-III) with crab toxicity were isolated from the sea anemone Stichodactyla gigantea by gel filtration on Sephadex G-50 and reverse-phase HPLC on TSKgel ODS-120T and their complete amino acid sequences were determined. Gigantoxins II (44 residues) and III (48

Bioinspired Load-Bearing Hydrogel Based on Engineered Sea Anemone Skin-Derived Collagen-Like Protein.

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With the help of recombinant DNA technology, many protein candidates have been investigated and engineered for biomaterial applications. Particularly, several repeat sequences with unique secondary structures have been selected as minimal building blocks for biosynthesis to improve the mechanical

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