Crystalline erabutoxin c

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Abstract

Erabutoxin c, the minor neurotoxic component from the venom of the sea snake Laticauda semifasciata has been crystallized. Two orthorhombic forms are found-space group P212121 and cell dimensions a = 55·8 ± 0·1 A, b = 53·9 ± 0·1 A, c = 41·4 ± 0·1 A and a = 56·2 ± 0·1 A, b = 55·4 ± 0·1 A, c = 38·5 ± 0·1 A. There are two molecules in both asymmetric units. A new form of erabutoxin b has recently been isolated which crystallizes in P212121 and appears to be isomorphous with one of the erabutoxin c forms. The cell dimensions are a = 55·7 ± 0·2 A, b = 53·8 ± 0·2 A, c = 41·5 ± 0·2 A. The relationship between the two erabutoxin c orthorhombic forms and the most common erabutoxin a and b orthorhombic form has not yet been established. © 1975.

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Preston, H. S., Kay, J., Sato, A., Low, B. W., & Tamiya, N. (1975). Crystalline erabutoxin c. Toxicon, 13(4), 273–274. https://doi.org/10.1016/0041-0101(75)90133-6

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