HI, I am trying to understand which cell penetrating peptide I can order/syth that will bind non covalently to a protein cargo (eg. GFP !) and then efficiently deliver it into a cell?
Great idea to use CPP. I thought about that before I graduated. My guess is you can get some CPP synthesized with azide/alkyne group and have your cargo protein have alkyne/azide lable. Click chemistry can allow mild conjugation. But it seems to be a covalent conjugation.
You can also consider disulfide bond conjugation. After uptake, the reducing environment can break the conjugation and release the cargo.