TAT (48-57) is a cell-permeable peptide derived from the HIV-1 transactivator of transcription (Tat) protein, encompassing amino acid residues 48 to 57 from the basic domain of HIV Tat.
Tat-NR2B9c TFA is a 20-aa peptide, and acts as an inhibitor of postsynaptic density-95 (PSD-95)(EC50 of 6.7 nM for PSD-95d2), and possesses neuroprotective efficacy.
Tat-NR2BAA is an inactive control peptide of Tat-NR2B9c. It shares a similar sequence with Tat-NR2B9c, but possesses a double-point mutation in the COOH terminal tSXV motif. This mutation renders Tat-NR2BAA unable to bind PSD-95. Tat-NR2B9c, on the other hand, is a membrane-permeable peptide that interferes with PSD-95/NMDAR binding. This interference leads to the decoupling of NR2B- and/or NR2A-type NMDARs from PSD-95[1][2].
Biotin-TAT (47-57) is a biotin-tagged transactivator of transcription, commonly employed as a protein transduction domain (PTD) in various primary cells. Its transduction capacity is contingent on ATP and temperature, suggesting the participation of endocytosis.
Tat-beclin 1, a peptide derived from the autophagy protein beclin 1, is a powerful inducer of autophagy. It interacts with GAPR-1 (GLIPR2), a negative regulator of autophagy. Tat-beclin 1 effectively reduces the buildup of polyglutamine expansion protein aggregates and inhibits the replication of various pathogens, such as HIV-1, in laboratory experiments. In addition, it has demonstrated the ability to decrease mortality in mice infected with chikungunya (CHIKV) or West Nile virus (WNV).
(Cys47)-HIV-1 tat Protein (47-57) possesses membrane translocation functionality and can serve as a surface derivatization agent for magnetic pharmaceuticals, thereby enhancing their uptake into specific target cells.
TAT-Gap19(I130A) is a control peptide for TAT-Gap19, a Cx43 hemichannel blocker. TAT-Gap19(I130A) consists of TAT-GAP19 with a I130A amino acid residue change at a key residue for GAP19 activity. In C6 glioma cells expression Cx43, TAT-GAP19(1130A) does not inhibit [Ca2+]i-triggered ATP release at 200 μM. TAT-Gap19(I130A) is cell permeable.