Abstract
ESTERASES of blood plasma have been classified as A- and B-esterases on the basis of their responses to organophosphorous inhibitors1. This classification has been extended to include esterases obtained from other animal tissues. A-esterases (arylesterases) are not, whereas B-esterases (aliesterases) are, inhibited by organophosphorous chemicals. Bergmann et al.2 isolated a C-esterase from hog kidney extracts which behaved like an A-esterase, but was activated by p-chloromercuribenzoate (PCMB) at concentrations which inhibited A-esterases. Plant esterases have yet to be included in this classification. An esterase from citrus3 and wheat germ esterase4 were originally described as acetylesterases. Since inhibition was obtained with diisopropylfluorophosphate (DFP), they can be classified as acetyl-B-esterases.
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JOOSTE, J., MORELAND, D. Soybean Phenoxyesterase. Nature 195, 907–908 (1962). https://doi.org/10.1038/195907b0
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DOI: https://doi.org/10.1038/195907b0
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