Isolation and partial characterization of rhizolysin, a high molecular weight protein with hemolytic activity, from the jellyfish Rhizostoma pulmo.
A new cytolysin has been isolated from the nematocysts of the jellyfish, Rhizostoma pulmo, and named rhizolysin. The hemolysin has a mol. wt of approximately 260,000, a sedimentation coefficient of 10.3 S and is rod-shaped with a calculated axial ratio of about 1:5. It appears to be composed of three subunits with a pI value near 7.8. Rhizolysin shows no phospholipase A activity, nor an induction period for its hemolytic activity and is completely inhibited by sucrose. The optimum pH was 6.75. The mu value calculated from the Arrhenius plot is 5940 cal/mole. Rhizolysin was inhibited by cholesterol and less by sphingomyelin.
Cariello
L
L
Department of Biochemistry, Stazione Zoologica, Anton Dohrn, Napoli, Italy.
Romano
G
G
Spagnuolo
A
A
Zanetti
L
L
D000818:Animals; D003064:Cnidarian Venoms / Q000633:toxicity*; D004591:Electrophoresis, Polyacrylamide Gel; D006461:Hemolysis / Q000187:drug effects; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008297:Male; D008970:Molecular Weight; D051381:Rats; D011919:Rats, Inbred Strains; D013696:Temperature
D003064:Cnidarian Venoms