Elamipretide/SS-31, 99% purity peptide (TFA removed)

Elamipretide/SS-31, 99% purity peptide (TFA removed)

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

Batch to batch variation of the purity

D-Arg-Dmt-Lys-Phe-NH2

D-Arg-Dmt-Lys-Phe-NH2

5

99.5%

C₃₂H₄₉N₉O₅

639.78

Synthetic

Powder

Dmt=2,6-dimethyl-L-tyrosine SS-31 peptide is a cardiolipin peroxidase inhibitor and mitochondrial targeting peptide. It improves left ventricular and mitochondrial function. SS-31 peptide attenuates mitochondrial dysfunction and oxidative damage in human trabecular meshwork cells. It prevents H2O2-induced sustained oxidative stress in iHTM and GTM(3) cells. Phase II clinical trials for the treatment of chronic heart failure and mitochondrial myopathy are ongoing.

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

• Wang B, Fu J, Yu T, Xu A, Qin W, Yang Z, Chen Y, Wang H. Contradictory effects of mitochondria- and non-mitochondria-targeted antioxidants on hepatocarcinogenesis by altering DNA repair in mice. Hepatology. 2018 Feb;67(2):623-635. doi: 10.1002/hep.29518. Epub 2018 Jan 7. PMID: 28898446.

Trifluoroacetic acid (TFA) has a significant impact on peptides due to its role in the peptide synthesis process.

TFA is essential for the protonation of peptides that lack basic amino acids such as Arginine (Arg), Histidine (His), and Lysine (Lys), or ones that have blocked N-termini. As a result, peptides often contain TFA salts in the final product.

TFA residues, when present in custom peptides, can cause unpredictable fluctuations in experimental data. At a nanomolar (nM) level, TFA can influence cell experiments, hindering cell growth at low concentrations (as low as 10 nM) and promoting it at higher doses (0.5–7.0 mM). It can also serve as an allosteric regulator on the GlyR of glycine receptors, thereby increasing receptor activity at lower glycine concentrations.

In an in vivo setting, TFA can trifluoroacetylate amino groups in proteins and phospholipids, inducing potentially unwanted antibody responses. Moreover, TFA can impact structure studies as it affects spectrum absorption.