Animal, Plant, and Microbial Toxins: Volume 2 Chemistry, by Nobuyo Maeda, Nobuo Tamiya, Y. M. Chen, C. Y. Lee (auth.),

By Nobuyo Maeda, Nobuo Tamiya, Y. M. Chen, C. Y. Lee (auth.), Akira Ohsaka, Kyozo Hayashi, Yoshio Sawai, Ryosuke Murata, Masaru Funatsu, Nobuo Tamiya (eds.)

During the prior twenty years, examine on animal, plant, and microbial pollutants has improved swiftly, and new and fascinating details has seemed to make clear either the medical and healing features of intoxication and, much more impor­ tant, to assist us comprehend extra precisely the constitution and the mode of motion of poisons on a molecular foundation. as a result of the interdisciplinary nature of toxin examine, it's of significant impor­ tance that staff focusing on its assorted elements may still make a selected attempt to replace and stay alongside of new advancements during this rapidly-expanding box. This has been one of many major reasons of the sequence of foreign conferences which have been held during the last ten years. The expanding curiosity within the result of toxin study might be defined partially via the turning out to be basic preoccupation with pollutants and its poisonous results, this means that extra anq extra experts in different fields are discovering it essential to be in contact with present learn into evidently taking place pollutants. The papers in those volumes have been provided on the Fourth overseas Symposium on Animal, Plant and Microbial pollutants, prepared via the Inter­ nationwide Society on Toxicology, held in Tokyo in September, 1974. The editors have made up our minds to incorporate either unique reviews and evaluate articles, prepared in keeping with disciplines. enhancing has been stored to the minimal valuable for enough comprehension of the materials.

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The elucidation of the structures of weakly acting toxins or inactive components, which are synthesized by the animals themselves, provides a new approach to the clarification of the essential structure of the active toxins. SUMMARY A weakly neurotoxic component (LsIn) has been isolated by CM-cellulose column chromatography from the venom of a sea snake, L. semifasciata. The LsIII content was about 10%-20% of the venom protein as determined by UV absorption at 280 nm. LsIII is homogeneous on rechromatography and disk electrophoresis.

1969). The amino acid sequence of cobrotoxin, Biochim. Biophys Acta 188: 65-77. Yang, C. , Yang, H. C. (1970). The position of disulfide bonds in cobrotoxin, Biochim. Biophys. Acta 214: 355-365. Yphantis, D. A. (1960). Rapid determination of molecular weight of peptides and proteins, Ann. NY A cad. Sci. 88: 586-601. Structural Studies of the Toxic Components from Naja naja oxiana Venom E. V. Grishin, A. P. Sukhikh, and Yu. A. Ovchinnikov Shemyakin Institute of Bioorganic Chemistry, USSR Academy of Sciences, Moscow Il73]2, USSR INTRODUCTION The snakes of the family Elapidae and Hydropidae contain certain neurotoxins in their venom which specifically block the acetylcholine receptors on the postsynaptic membrane.

To elucidate the structure-function relationships of snake toxins, many efforts have been made to find the minimum structural requirements by the following two ways. One is chemical modification studies with group-specific reagents and the other is comparison of the primary structures of related toxic components. The study of the effect of chemical modification of a specific group, however, must be accompanied by the evidence of conformational reservation of the toxin molecule. The second method relies on the chance that all of the nonessential residues are replacable by others.

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