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Amino acid sequence of a myotoxin from venom of the eastern diamondback rattlesnake (Crotalus adamanteus).
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Amino acid sequence of a myotoxin from venom of the eastern diamondback rattlesnake (Crotalus adamanteus).

Author: Y Samejima; Y Aoki; D Mebs
Edition/Format: Article Article : English
Publication:Toxicon : official journal of the International Society on Toxinology, 1991; 29(4-5): 461-8
Database:From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
Summary:
The complete amino acid sequence of a myotoxin isolated from Crotalus adamanteus venom (CAM-toxin) was determined. The total number of amino acid residues was 45, giving a mol. wt of 5202. The amino acid sequence was compared with those of previously determined Crotalus myotoxins. The CAM-toxin shows a surprisingly close relationship to those of peptide c (C. v. helleri), myotoxin a (C. v. viridis), crotamine (C. d.  Read more...
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Details

Document Type: Article
All Authors / Contributors: Y Samejima; Y Aoki; D Mebs
ISSN:0041-0101
OCLC Number: 121223862
Language Note: English
Awards:

Abstract:

The complete amino acid sequence of a myotoxin isolated from Crotalus adamanteus venom (CAM-toxin) was determined. The total number of amino acid residues was 45, giving a mol. wt of 5202. The amino acid sequence was compared with those of previously determined Crotalus myotoxins. The CAM-toxin shows a surprisingly close relationship to those of peptide c (C. v. helleri), myotoxin a (C. v. viridis), crotamine (C. d. terrificus), myotoxin I and II (C. v. concolor) with homologies of approximately 98, 83, 90, 95 and 91%, respectively. The hydropathy profile of the CAM-toxin is almost identical to peptide c and myotoxin I, as can be assumed from the sequence homology. Despite the absence of any close sequence homology with the myotoxic phospholipase A2 enzymes, CAM-toxin contains a similar cationic myotoxic region at residues 2-10 as found in the other five myotoxic peptides.

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