Myr-ZIP peptide

Myr-ZIP peptide

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

Myrisitic Acid-SIYRRGARRWRKL-OH

Myrisitic Acid-Ser-Ile-Tyr-Arg-Arg-Gly-Ala-Arg-Arg-Trp-Arg-Lys-Leu-OH

13

95.24%

C₉₀H₁₅₄N₃₀O₁₇

1928.37

Synthetic

Powder

This is a myristoylated PKCζ pseudosubstrate-derived ζ-inhibitory peptide (ZIP) found to inhibit an atypical type of Protein Kinase C ζ (zeta). It has been shown to also interact with PKC family isoforms and disrupt conventional PKC targeting and translocation leading to physiological memory impairment. The sequence corresponds to the pseudosubstrate region of the N-terminal regulatory domain that maintains the enzyme in an inactive form in the absence of activator. The pseudosubstrate peptide has also been shown to be a competitive inhibitor of PKCζ in neurons. This peptide was also used to demonstrate that PKCζ is involved in the regulation of integrin-dependent adhesion and chemotaxis of intact human neutrophils.

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

• LeBlancq MJ, McKinney TL, Dickson CT. ZIP It: Neural Silencing Is an Additional Effect of the PKM-Zeta Inhibitor Zeta-Inhibitory Peptide. J Neurosci. 2016 Jun 8;36(23):6193-8. doi: 10.1523/JNEUROSCI.4563-14.2016. PMID: 27277798; PMCID: PMC6604882.

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.