Amino-Acid Sequence of a Coelenterate Toxin: Toxin II from Anemonia sulcata

Amino acid sequence of a deltalike toxin from Staphylococcus epidermidis.

A deltalike toxin produced by a clinical isolate of Staphylococcus epidermidis was purified, and the amino acid sequence was determined. The toxin molecule consisted of 25 amino acid residues and shared a high degree of molecular homology with delta toxin purified from a Staphylococcus aureus human isolate.

The Stimulus to Feeding in Anemonia Sulcata

Amino-acid sequence of fragment A, an enzymically active fragment from diphtheria toxin.

The amino-acid sequence of Fragment A from diphtheria toxin is reported. Fragment A (molecular weight, Mr, 21,145) is the major enzymically active fragment produced upon activation of the intact toxin (Mr about 60,000) by limited tryptic digestion and reduction. It, or a similar fragment, is believed responsible for the inhibition of protein synthesis in animal cells exposed to the toxin. Fragm...

Structure and action of heteronemertine polypeptide toxins. Amino acid sequence of Cerebratulus lacteus toxin B-II and revised structure of toxin B-IV.

The primary structure of Cerebratulus lacteus toxin B-II has been investigated by automated Edman degradation of the reduced, carboxymethylated protein and of tryptic peptides derived from the maleylated protein. As a result of these studies, the identity of all 55 amino acid residues in the polypeptide chain has been unambiguously determined. Hydroxyproline, an amino acid not normally found in...

Characterization of cDNA sequence encoding for a novel sodium channel -toxin from the Iranian scorpion Mesobuthus eupeus venom glands

The venoms of Buthidae scorpions are known to contain basic, single-chain protein -toxins consisting of 60-70 amino acid residues that are tightly cross-linked by four disulfide bridges. Total RNA was extracted from the venom glands of scorpion Mesobuthus eupeus collected from the Khuzestan province of Iran and then cDNA was synthesized with the modified oligo (dT) primer and extracted total R...