In the landscape of biochemical research, the quest for precision tools to study kinase activity is constant. One such specialized tool that I have frequently encountered in laboratory settings is the Autocamtide Related Inhibitory Peptide-Cell Permeable (often abbreviated as AIP). As researchers, we are often tasked with investigating how a specific inhibitor functions within a complex biological system, and this synthetic peptide stands out for its high degree of specificity.
The Role of AIP in Kinase Research
The primary function of this molecule is that it controls the biological activity of calmodulin-dependent protein kinase II (CaMKII). Unlike broader inhibitors that might affect multiple pathways, the related inhibitory peptide is designed to target CaMKII with an IC50 of approximately 40 nM. This makes it an incredibly useful peptide for those looking to isolate the effects of CaMKII without inadvertently altering the function of other kinases, such as cAMP-dependent protein kinase (PKA) or protein kinase C (PKC).
From my experience, the standard, unmodified version of many inhibitory molecules struggl Highly specific and potentinhibitorof Ca2+/calmodulin-dependent protein kinase II without affecting cAMP-dependent protein kinase (PKA), protein kinase C (PKC) Read more es with the cell membrane. This is where the enhanced cell permeable derivative becomes essential. By utilizing a myristoylated form or other modifications, the peptide gains the ability of a macrocyclic peptide to pass through the cell membrane and reach its intracellular target.
Technical Specifications and Application
When sourcing this material, yo Regulation of Voltage-Gated Ca2+ Currents by - PMC - NIH u will ofte Autocamtide-2 Related Inhibitory Peptide II, Cell-permeableThe Autocamtide-2 Related. Sigma-Aldrich. 189485. Autocamtide-2 Related Inhibitory Peptide II, Cell- Read more n see it listed as Autocamtide-2 Related Inhibitory Peptide II, Cell-permeable. The technical data is quite precise:
* Molecular Weight: Approximately 1497.76 Da.
* Sequence: H-Lys-Lys-Lys-Leu-Arg-Arg-Gln-Glu-Ala-Phe-Asp-Ala-Leu-OH.
* Form: Usually supplied as a lyophilized powder, which requires careful reconstitution.
* Handling: It is typically shipped at ambient temperature, but for long-term stability, it should be stored according to the manufacturer’s guidelines.
The peptide Autocamtide is essentially a non-phosphorylatable analog of the natural substrate. Because it is a substrate-competitive inhibitor, it effectively blocks the kinase’s active site. This mechanism is crucial when inhibiting cell signaling pathways in experimental models.
Why Cell Permeability Matters
The development of cell-permeable tools has revolutionized how we observe intracellular processes. Before these advancements, researchers often had to rely on microinjection or electroporation to introduce inhibitory agents. The advent of the cell penetrating pepti This is a myristoylated form ofAutocamtide-2-Related Inhibitory Peptide(AIP), a highly potent and specific substrate competitiveinhibitorof Calmodulin- de approach—or the use of lipid-modified peptides—allows for a more passive and uniform uptake across a population of cells.
Whether you are working with a cell-permeable JNK-inhibitory peptide or the specific CaMKII-targeting AIP, the goal remains the same: achieving effective inhibition without causing significant cytotoxicity. The permeable nature of these compounds ensures that they can reside in the cytoplasm and interact with their targe This is a myristoylated form ofAutocamtide-2-Related Inhibitory Peptide(AIP), a highly potent and specific substrate competitiveinhibitorof Calmodulin- ts effectively.
Final Thoughts on Experimental Use
In my own observation, the related inhibitory peptide is a gold standard for specificity. When selecting a peptide inhibitor, it is vital to verify the purity, often confirmed by HPLC (typically ≥97%). The Autocamtide-2 Re The Autocamtide-2 Related Inhibitory Peptidecontrols the biological activity of calmodulin-dependent protein kinase II. This small molecule/inhibitor is Read more lated Inhibitory Peptide II, Cell-permeable remains a vital asset for 2 Sept 2014—Autocamtide-2 Related Inhibitory Peptide II, Cell-permeable. REACH registreerimisnumber: Sellel ainel puudub registreerimisnumber, kuna see Read more those investigating the nuances of CaMKII signaling.
By understanding the structural requirements and the mechanism by which these molecules traverse the cell boundary, we can better design experiments that yield clean, reproducible data. Always ensure that the cell permeable derivative also available from your supplier meets the rigorous standards required for your specific research application.