p28 peptide

p28 peptide

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

Batch to batch variation of the purity

H-LSTAADMQGVVTDGMASGLDKDYLKPDD-OH

H-Leu-Ser-Thr-Ala-Ala-Asp-Met-Gln-Gly-Val-Val-Thr-Asp-Gly-Met-Ala-Ser-Gly-Leu-Asp-Lys-Asp-Tyr-Leu-Lys-Pro-Asp-Asp-OH

28

95.56%

C₁₂₂H₁₉₇N₃₁O₄₇S₂

2914.15

Synthetic

Powder

p28 is an amphipathic, α-helical, cell penetrating peptide composed of amino acids Leu50-Asp77 of azurin, a redox protein secreted from the opportunistic pathogen pseudomonas aeruginosa. p28 is a post translational, multitarget anticancer agent that preferentially enters a wide variety of solid tumour cells. On entry, p28 binds to both wild-type and mutant p53 protein, inhibiting constitutional morphogenic protein 1 (cop1) mediated ubiquitination and proteasomal degradation of p53, increasing levels of p53 which induce cell cycle arrest at G2/M and causing apoptosis that results in tumour cell shrinkage and death.

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

• Mehta et al (2011) A cell penetrating peptide derived from azurin inhibits angiogenesis and tumor growth by inhibiting phosphorylation of VEGFR-2, FAK and Akt. Angiogenesis 14(3) 355 PMID: 21667138
• Yamada et al (2013) p28, a first in class peptide inhibitor of cop1 binding to p53. Br J Cancer. 108(12) 2495 PMID: 23736031
• Yaghoubi et al (2020) p28 Bacterial Peptide, as an Anticancer Agent. Front Oncol. 2020 10 1303 PMID: 32850408

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.