Molecular mechanisms of cytotoxicity: comparison of complement and killer lymphocytes.


The membrane attack complex of complement is an amphiphilic fusion product of 5 glycoproteins, C5, C6, C7, C8 and C9. The membrane attack complex forms transmembrane channels that vary in size depending on the number of C9 molecules incorporated into the complex. The C5b-8 complex forms small channels and at high multiplicity can kill nucleated cells. At… (More)


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