Question

A single atom change facilitates the membrane transport of green fluorescent proteins in mammalian cells

Answer 1

Answer:

Explanation:

Direct delivery of proteins into mammalian cells is a challenging problem in biological and biomedical applications. The most common strategies for the delivery of proteins into the cells include the use of cell‐penetrating peptides or supercharged proteins. Herein, we show for the first time that a single atom change, hydrogen to halogen, at one of the tyrosine residues can increase the cellular entry of 28 kDa green fluorescent protein (GFP) in mammalian cells. The protein uptake is facilitated by a receptor‐mediated endocytosis and the cargo can be released effectively into cytosol by co‐treatment with the endosomolytic peptide ppTG21.

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