TAT-ANK peptide

TAT-ANK peptide

• COA/MS/HPLC Report
• Handling and Storage of Synthetic Peptides
• Material Safety Data Sheets (MSDS)

Batch to batch variation of the purity

H-YGRKKRRQRRRQTLQAELLVVYGA-OH

H-Tyr-Gly-Arg-Lys-Lys-Arg-Arg-Gln-Arg-Arg-Arg-Gln-Thr-Leu-Gln-Ala-Glu-Leu-Leu-Val-Val-Tyr-Gly-Ala-OH

24

97.74%

C₁₂₈H₂₂₁N₄₇O₃₃

2946.41

Synthetic

Powder

TAT-ANK is a peptide derived from amino acid residues 179–191 (QTLQAELLVVYGA) of the G-protein coupled receptor kinase interacting protein-1 (GIT1) ankyrin domain, which are are crucial for GIT1 binding to the Notch transcription repressor RBP-J. In vitro, application of TAT-ANK significantly inhibits Delta-like 4 (Dll4) expression and Notch 1 activation in human umbilical vein endothelial cells (HUVECs) by competing with activated Notch1 binding to RBP-J, and in mouse models, TAT-ANK reduces tumour size through impairing tumour angiogenesis.Since the TAT sequence is YGRKKRRQRRR, the full peptide sequence is YGRKKRRQRRR-QTLQAELLVVYGA.

Normally, this peptide will be delivered in lyophilized form and should be stored in a freezer at or below -20 °C. For more details, please refer to the manual: Handling and Storage of Synthetic Peptides

• Zhu et al (2022) A novel peptide inhibitor of Dll4-Notch1 signalling and its pro-angiogenic functions. Br J Pharmacol. 1-16 PMID: 34796471

Trifluoroacetic acid (TFA) is a common counterion from the purification process using High-Performance Liquid Chromatography (HPLC). The presence of TFA can affect the peptide's net weight, appearance, and solubility.

Impact on Net Weight: The TFA salt contributes to the total mass of the product. In most cases, the peptide content constitutes >80% of the total weight, with TFA accounting for the remainder.

Solubility: TFA salts generally enhance the solubility of peptides in aqueous solutions.

In Biological Assays: For most standard in vitro assays, the residual TFA levels do not cause interference. However, for highly sensitive cellular or biochemical studies, please be aware of its presence.