Sea nettle (Chrysaora quinquecirrha) lethal factor: Purification by recycling on m-aminophenyl boronic acid acrylic beads

  • Long-Rowe K
  • Burnett J
  • 5


    Mendeley users who have this article in their library.
  • 10


    Citations of this article.


Experiments were performed to define the best isolation method for isolating Chrysaora fishing tentacle nematocyst organelles in order to minimize non-nematocyst contaminating proteins and proteases and stabilize crude nematocyst venom lethal activity. Techniques employed to disrupt the tentacles included autolysis, homogenization, or digestion using either trypsin or collagenase. Sephacryl-200 gel-filtration chromatography separated two lethal fractions. An immobilized serine protease inhibitor column, m-aminophenyl boronic acid acrylic beads, which reversibly bound one of the two lethal factors, was used in the second and third purification steps. By this means, a 105,000 mol wt. protein was purified, as judged by silver stained SDS-polyacrylamide gels. Lethal activity was inhibited by exposure to the serine protease inhibitor, l-1 chloro 3[4-tosylamido]-7-amino-2-heptanone-HCl, after purification. Although this lethal factor has some characteristics of a serine protease, it is not proteolytically active. © 1994.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


  • Karen O. Long-Rowe

  • Joseph W. Burnett

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free