Definition: Venoms from snakes of the subfamily Crotalinae or pit vipers, found mostly in the Americas. They include the rattlesnake, cottonmouth, fer-de-lance, bushmaster, and American copperhead. Their venoms contain nontoxic proteins, cardio-, hemo-, cyto-, and neurotoxins, and many enzymes, especially phospholipases A. Many of the toxins have been characterized.
from pit vipers (rattlesnake, cottonmouth, etc.); /antag permitted but consider also ANTIVENINS; /enzymology permitted; TN 241: common & scientific names of various crotalids
jararhagin [ HF2 -proteinase,jaracetin ] high MW hemorrhagic metalloprotease from Bothrops jararaca venom; 421-amino acid residue; contains disintegrin family with the Arg-Gly-Asp sequence replaced by Glu-Cys-Asp; jaracetin is an alternative
