This is a biotinylated HIV-derived cell penetrating TAT peptide . This positively charged biotin-peptide has been used in studies to form a colloidal coat over oligonucleotides-saturated nanoparticles such that TAT-coated nanoparticles when loaded with dense SiRNA molecules could efficiently penetrate a wide variety of human embryonic stem cells.
Proteins & Peptides
Huang X. et al. Biomat. 63, 70-79 (2015).