Cell-penetrating peptides (CPPs) such as the HIV TAT peptides are able to enter cells by direct translocation and endocytosis. Click here to see details about the CPP: http://lifetein.com/Cell_Penetrating_Peptides.html

About Cell-Penetrating Peptides

The following table shows a selection of currently known CPPs, their origins, and sequences.

Name	Origin	Sequence
Tat (48-60)	HIV-1 protein	GRKKRRQRRRPPQQ
plsl	Igl-1 homeodomain	RVIRVWFQNKRCKDKK
	STR-R8	Stearly-RRRRRRRR-amide (Stearyl = CH3(CH2)16CO-)
	STR-(RxR)4	Stearly-(RxR)4-amide (X=6-aminohexanoic acid)