Rapid cellular removal of a membrane-inserted foreign polypeptide.


We have developed a system that makes it possible to study the fate of a foreign polypeptide that is inserted in the plasma membrane. Diphtheria toxin is a bacterial protein toxin that, upon acidification, has the ability to insert into the plasma membrane from the outside of eukaryotic cells. We present results that indicate endocytic uptake and… (More)


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