Nap-GFFKEH, Nap-1 peptide

Nap-GFFKEH, Nap-1 peptide

• Handling and Storage of Synthetic Peptides
• Material Safety Data Sheets (MSDS)

Batch to batch variation of the purity

Nap-GFFKEH

naphthylacetic acid-Gly-Phe-Phe-Lys-Glu-His

6

95.1%

C₄₉H₅₇N₉O₁₀

932.03

Synthetic

Powder

Nap-1 is a noval class of histidine-containing hexapeptide derivatives used for in situ hydrogelation at the zinc ion-rich prostate tissue. Nap-1 displayed excellent self-assembly capability with a high sensitivity to zinc ions at about 0.1 equivalency. The molecular was rationally designed: (1) a dipeptide of phenylalanine (FF) which was utilized to promote molecular self-assembly and gelation; (2) a capping group of naphthalene to tune the hydrophobicity of Nap-1; (3) a terminus with glutamate (E) and histidine (H) to tune the hydrophilicity and to chelate zinc ions to form coordination bonds. Nap-1 was soluble in PBS and would form hydrogels at physiological pH (~pH 7.2) in the presence of zinc ions. The addition of 0.34 equiv. of EDTA destroyed the as-formed hydrogels of Nap-1 in 30 seconds, proving that metal chelations between zinc ions and peptides were vital for the self-assembly process.

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

• He S, Mei L, Wu C, et al. In situ hydrogelation of bicalutamide-peptide conjugates at prostate tissue for smart drug release based on pH and enzymatic activity. Nanoscale. 2019

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.