RP-182 peptide

RP-182 peptide

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

Batch to batch variation of the purity

H-KFRKAFKRFF-OH

H-Lys-Phe-Arg-Lys-Ala-Phe-Lys-Arg-Phe-Phe-OH

10

96.78%

C₆₉H₁₀₃N₁₉O₁₁

1374.67

Synthetic

Powder

The company Riptide Biosciences (Vallejo, CA, USA) designed a linear peptide that binds to CD206. The peptide, named RP-182 (sequence: KFRKAFKRFF) consists of alternating hydrophobic and hydrophilic aminoacids. Because the peptide also binds to RelB and CD47, the selectivity of systemically administered RP-182 for M2 TAMs remains to be seen. Interestingly, in a congress abstract the peptide was recently reported to induce phagocytosis and apoptosis in M2 mouse macrophages. This activity could be linked to the conformational change of CD206 produced by RP-182.

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

• Sable R., Jaynes J., Ronzetti M., Guzman W., Knotts Z., Val N., de Morgan J., Yates C., Bolormaa B., Rudloff U. Abstract B49: Precision targeting of M2-like macrophages by the innate defense regulator RP-182 in pancreatic cancer and noncancerous diseases. Cancer Res. 2019;79:B49.
• Scodeller, P., Simón-Gracia, L., Kopanchuk, S. et al. Precision Targeting of Tumor Macrophages with a CD206 Binding Peptide. Sci Rep 7, 14655 (2017). https://doi.org/10.1038/s41598-017-14709-x

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.