Identification and isolation of a mammalian protein which is antigenically and functionally related to the phospholipase A2 stimulatory peptide melittin.

作者: M.A. Clark , T.M. Conway , R.G. Shorr , S.T. Crooke

DOI: 10.1016/S0021-9258(18)61362-6

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摘要: Abstract Antibodies prepared against the phospholipase A2 stimulatory peptide melittin were used to identify and isolate a novel mammalian protein with similar functional antigenic properties. The of Mr 28,000 was isolated from cell sonicates by high performance immunoaffinity chromatography size exclusion chromatography. This stable for several months when frozen at -70 degrees C. purified selectively stimulated phosphatidylcholine as substrate but had no effect on activity phosphatidylethanolamine substrate. Furthermore, this C or pancreatic snake venom A2. unaffected RNase DNase treatment. However, boiling trypsin digestion inactivated activity. mechanism stimulation appeared result an increase in apparent Vmax enzyme.

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