Abstract
An inorganic pyrophosphatase has been purified to apparent homogeniety from Indian cobra(Naja naja) venom, with a ten-fold increase in specific activity. The enzyme activity is intrinsic to a protein fraction in the venom which is normally termed cardiotoxin, cobramine, cytotoxin and so on. The enzyme shows a lowK m (70 μI) and high heat stability. The enzyme was active against sodium pyrophosphate; it also hydrolyses a few mononucletides and sugar phosphates at much lower rates. The physiological significance of inorganic pyrophosphatase in venom is discussed.
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Achyuthan, K.E., Ramachandran, L.K. Cardiotoxin of the Indian cobra(Naja naja) is a pyrophosphatase. J Biosci 3, 149–155 (1981). https://doi.org/10.1007/BF02702658
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DOI: https://doi.org/10.1007/BF02702658