Abstract
Pas2r12 is comprised of a repeat of the penetration-accelerating sequence (Pas) (Pas2: FFLIG-FFLIG) and D-form dodeca-arginine (r12), a cell-penetrating peptide. Pas2r12 significantly enhances cytosolic delivery of cargo proteins, including enhanced green fluorescent protein and immunoglobulin G. Simply incubating Pas2r12 with cargo leads to their cytosolic tranlsocation. Cytosolic delivery of cargo by Pas2r12 involves caveolae-mediated endocytosis. In this chapter, we describe methods of cytosolic delivery of cargo using Pas2r12 and provide methods for investigating the cellular uptake pathway of cargo by Pas2r12.
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