Angiotensin II [1-7] peptide

Angiotensin II [1-7] peptide

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

Batch to batch variation of the purity

DRVYIHP

Asp-Arg-Val-Tyr-Ile-His-Pro

7

96.1%

C₄₁H₆₂N₁₂O₁₁

899

51833-78-4

Synthetic

Powder

Angiotensin (1-7), DRVYIHP, an enzymatically produced peptide of the renin-angiotensin system, shows pharmacologically distinct, tissue-specific actions that differ from those of angiotensin II. Angiotensin (1-7) shows considerable cardiovascular and antiangiogenic activity. Iusuf et al. reviewed its phamacological properties and pharmacotherapeutic perspectives. Moreover, the heptapeptide was shown to inhibit the growth of human lung cancer cells in vitro and to reduce the size of human lung cancer xenografts in vivo.

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

• Schiavone MT, Santos RA, Brosnihan KB, Khosla MC, Ferrario CM. Release of vasopressin from the rat hypothalamo-neurohypophysial system by angiotensin-(1-7) heptapeptide. Proc Natl Acad Sci USA. 1988;85(11):4095-8.

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.