Rac1 Inhibitor W56

Product Name:Rac1 Inhibitor W56

CAS No:1095179-01-3

Purity:95%

Molar Mass:1671.93

Chemical Formula:C74H117N19O23S

Storage:Store at -20 degrees Celsius

Sequence:MVDGKPVNLGLWDTAG

Target:Rac1

Application:

Rac1 Inhibitor W56 is a small molecule inhibitor designed to selectively target Rac1, a member of the Rho family of GTPases. Rac1 plays a pivotal role in regulating various cellular functions, including cytoskeletal dynamics, cell migration, proliferation, and gene expression. By inhibiting Rac1, W56 disrupts these processes, making it a valuable tool in research focused on understanding Rac1's role in cancer metastasis, inflammation, and other diseases where Rac1 signaling is dysregulated. This inhibitor is particularly useful for studying the molecular mechanisms underlying cell motility and for exploring potential therapeutic strategies aimed at targeting Rac1 in various pathological conditions.

Current Research:

Rac1 Inhibitor W56 is a synthetic peptide comprising amino acid residues 45 to 60 of the Rac1 protein. This segment includes the critical tryptophan residue at position 56 (Trp56), which is essential for Rac1's interaction with specific guanine nucleotide exchange factors (GEFs) such as TrioN, GEF-H1, and Tiam1. By mimicking this region, Rac1 Inhibitor W56 effectively disrupts these protein-protein interactions, thereby inhibiting the activation of Rac1.

Mechanism of Action

Rac1 is a small GTPase that plays a pivotal role in various cellular processes, including cytoskeletal organization, cell migration, and proliferation. Its activation is mediated by GEFs, which facilitate the exchange of GDP for GTP on Rac1. The Trp56 residue within Rac1 is crucial for binding to a subset of GEFs. Rac1 Inhibitor W56, encompassing residues 45-60 of Rac1, competes with endogenous Rac1 for GEF binding, thereby preventing the activation of Rac1 and subsequent downstream signaling pathways.

Research Applications

The specificity of Rac1 Inhibitor W56 for the Rac1-GEF interaction makes it a valuable tool in research settings, particularly for:

Elucidating Rac1-Mediated Signaling Pathways: By inhibiting Rac1 activation, researchers can dissect the role of Rac1 in various cellular functions and its involvement in pathological conditions.

Investigating Cytoskeletal Dynamics: Rac1 is integral to actin cytoskeleton remodeling; thus, its inhibition aids in understanding processes like cell migration and morphological changes.

Exploring Therapeutic Potential: Given Rac1's implication in cancer progression and metastasis, Rac1 Inhibitor W56 serves as a prototype for developing therapeutic agents targeting Rac1-related pathways.

Handling and Storage

For optimal stability, Rac1 Inhibitor W56 should be stored at -20°C, protected from light and moisture. It is soluble in aqueous solutions, facilitating its incorporation into various experimental protocols.

Conclusion

Rac1 Inhibitor W56 is a potent and selective inhibitor of Rac1 activation, acting by disrupting its interaction with specific GEFs. Its application in research provides significant insights into Rac1's role in cellular processes and offers a foundation for potential therapeutic developments targeting Rac1-mediated pathways.

Reference:

Kim, J., Bustamante, E., Sotonyi, P., Maxwell, N., Parameswaran, P., Kent, J. K., ... & Soderling, S. H. (2024). Presynaptic Rac1 in the hippocampus selectively regulates working memory. Elife, 13, RP97289.